Flange Dimensions | ASME B16.5-2017 (2024)

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ASME B16.5-2017

Class: 150 300 400 600 900 1500 2500

ASME B16.47-2017

(Series A)

Class: 150 300 400 600 900 RTJ

ASME B16.47-2017

(Series B)

Class: 75 150 300 400 600 900

26” – 48” Slip-Ons

(Industry Standard / Series A)

Class: 150 300

Lap Joint Stub Ends

Class: 150

ASME B16.5-2017

Download Specs

							Length Through Hub					Bore					Bolt
Nominal Pipe Size/ Bore for LWN	Outside Diameter	Min. Thickness	Diameter of Raised Face	Min. Thickness Lap Joint	Diameter of Hub	Diameter Beginning of Chamfer Welding Neck	Threaded Slip-on Socket Welding	Lapped	Welding Neck	Long Welding Neck	Minimum Thread Length Threaded	Minimum Slip-On Socket Welding	Minimum Lapped	Welding Neck / Socket Welding	Corner Bore Radius of Lapped Flange and Pipe	Depth of Socket	Bolt Circle Dia	Number of Holes	Diameter of Holes
J	O	tf	R	tf	X	A	Y1	Y2	Y3	Y4	T	B1	B2	B3	r	D
½	3.50	0.38	1.38	0.44	1.19	0.84	0.56	0.62	1.81	9.00	0.62	0.88	0.90	Note-3	0.12	0.38	2.38	4	0.63
¾	3.88	0.44	1.69	0.50	1.50	1.05	0.56	0.62	2.00	9.00	0.62	1.09	1.11	Note-3	0.12	0.44	2.75	4	0.63
1	4.25	0.50	2.00	0.56	1.94	1.32	0.62	0.69	2.12	9.00	0.69	1.36	1.38	Note-3	0.12	0.50	3.12	4	0.63
1¼	4.62	0.56	2.50	0.62	2.31	1.66	0.75	0.81	2.19	9.00	0.81	1.70	1.72	Note-3	0.19	0.56	3.50	4	0.63
1½	5.00	0.62	2.88	0.69	2.56	1.90	0.81	0.88	2.38	9.00	0.88	1.95	1.97	Note-3	0.25	0.62	3.88	4	0.63
2	6.00	0.69	3.62	0.75	3.06	2.38	0.94	1.00	2.44	9.00	1.00	2.44	2.46	Note-3	0.31	0.69	4.75	4	0.75
2½	7.00	0.81	4.12	0.88	3.56	2.88	1.06	1.12	2.69	9.00	1.12	2.94	2.97	Note-3	0.31	0.75	5.50	4	0.75
3	7.50	0.88	5.00	0.94	4.25	3.50	1.12	1.19	2.69	9.00	1.19	3.57	3.60	Note-3	0.38	0.81	6.00	4	0.75
3½	8.50	0.88	5.50	0.94	4.81	4.00	1.19	1.25	2.75	9.00	1.25	4.07	4.10	Note-3	0.38	-	7.00	8	0.75
4	9.00	0.88	6.19	0.94	5.31	4.50	1.25	1.31	2.94	Note-3	1.31	4.57	4.60	Note-3	0.44	-	7.50	8	0.75
5	10.00	0.88	7.31	0.94	6.44	5.56	1.38	1.44	3.44	12.00	1.44	5.66	5.69	Note-3	0.44	-	8.50	8	0.88
6	11.00	0.94	8.50	1.00	7.56	6.63	1.50	1.56	3.44	12.00	1.56	6.72	6.75	Note-3	0.50	-	9.50	8	0.88
8	13.50	1.06	10.62	1.12	9.69	8.63	1.69	1.75	3.94	12.00	1.75	8.72	8.75	Note-3	0.50	-	11.75	8	0.88
10	16.00	1.12	12.75	1.19	12.00	10.75	1.88	1.94	3.94	12.00	1.94	10.88	10.92	Note-3	0.50	-	14.25	12	1.00
12	19.00	1.19	15.00	1.25	14.38	12.75	2.12	2.19	4.44	12.00	2.19	12.88	12.92	Note-3	0.50	-	17.00	12	1.00
14	21.00	1.31	16.25	1.38	15.75	14.00	2.19	3.12	4.94	12.00	2.25	14.14	14.18	Note-3	0.50	-	18.75	12	1.13
16	23.50	1.38	18.50	1.44	18.00	16.00	2.44	3.44	4.94	12.00	2.50	16.16	16.19	Note-3	0.50	-	21.25	16	1.13
18	25.00	1.50	21.00	1.56	19.88	18.00	2.62	3.81	5.44	12.00	2.69	18.18	18.20	Note-3	0.50	-	22.75	16	1.25
20	27.50	1.62	23.00	1.69	22.00	20.00	2.81	4.06	5.62	12.00	2.88	20.20	20.25	Note-3	0.50	-	25.00	20	1.25
22	29.50	1.75	25.25	1.81	24.00	22.00	3.06	4.25	5.82	12.00	-	22.22	22.25	Note-3	0.50	-	27.25	20	1.38
24	32.00	1.81	27.25	1.88	26.12	24.00	3.19	4.38	5.94	12.00	3.25	24.25	24.25	Note-3	0.50	-	29.50	20	1.38
Notes: (1) This dimension is for the large end of the hub, which may be straight or tapered. Taper shall not exceed 7 deg on threaded, slip-on, socket-welding, and lapped flanges. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickness without the raised face height. (3) To be specified by the Customer; Y4 - the length can be 9" (B16.5) or 12" (industry), shall be specified by the customer. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-030 Rev. 1 10/01/2020

ASME B16.5-2017

Download Specs

							Length Through Hub					Bore						Bolt
Nominal Pipe Size/ Bore for LWN	Outside Diameter	Min. Thickness	Diameter of Raised Face	Min. Thickness Lap Joint	Diameter of Hub	Diameter Beginning of Chamefer Welding Neck	Threaded Slip-on Socket Welding	Lapped	Welding Neck	Long Welding Neck	Minimum Thread Length Threaded	Minimum Slip-On Socket Welding	Minimum Lapped	Welding Neck / Socket Welding	Corner Bore Radius of Lapped Flange and Pipe	Depth of Socket	Minimum Counter-bore Threaded Flange	Bolt Circle Dia	Number of Holes	Diameter of Holes
J	O	tf	R	tf	X	A	Y1	Y2	Y3	Y4	T	B1	B2	B3	r	D	Q
½	3.75	0.50	1.38	0.56	1.50	0.84	0.81	0.88	2.00	9.00	0.62	0.88	0.90	Note-3	0.12	0.38	0.93	2.62	4	0.63
¾	4.62	0.56	1.69	0.62	1.88	1.05	0.94	1.00	2.19	9.00	0.62	1.09	1.11	Note-3	0.12	0.44	1.14	3.25	4	0.75
1	4.88	0.62	2.00	0.69	2.12	1.32	1.00	1.06	2.38	9.00	0.69	1.36	1.38	Note-3	0.12	0.50	1.41	3.50	4	0.75
1¼	5.25	0.69	2.50	0.75	2.50	1.66	1.00	1.06	2.50	9.00	0.81	1.70	1.72	Note-3	0.19	0.56	1.75	3.88	4	0.75
1½	6.12	0.75	2.88	0.81	2.75	1.90	1.13	1.19	2.63	9.00	0.88	1.95	1.97	Note-3	0.25	0.62	1.98	4.50	4	0.88
2	6.50	0.81	3.62	0.88	3.31	2.38	1.25	1.31	2.69	9.00	1.12	2.44	2.46	Note-3	0.31	0.69	2.50	5.00	8	0.75
2½	7.50	0.94	4.12	1.00	3.94	2.88	1.44	1.50	2.94	9.00	1.25	2.94	2.97	Note-3	0.31	0.75	3.00	5.88	8	0.88
3	8.25	1.06	5.00	1.12	4.62	3.50	1.63	1.69	3.06	9.00	1.25	3.57	3.60	Note-3	0.38	0.81	3.63	6.62	8	0.88
3½	9.00	1.12	5.50	1.19	5.25	4.00	1.69	1.75	3.13	9.00	1.44	4.07	4.10	Note-3	0.38	-	4.13	7.25	8	0.88
4	10.00	1.19	6.19	1.25	5.75	4.50	1.82	1.88	3.32	Note-3	1.44	4.57	4.60	Note-3	0.44	-	4.63	7.88	8	0.88
5	11.00	1.31	7.31	1.38	7.00	5.56	1.94	2.00	3.82	12.00	1.69	5.66	5.69	Note-3	0.44	-	5.69	9.25	8	0.88
6	12.50	1.38	8.50	1.44	8.12	6.63	2.00	2.06	3.82	12.00	1.81	6.72	6.75	Note-3	0.50	-	6.75	10.62	12	0.88
8	15.00	1.56	10.62	1.62	10.25	8.63	2.38	2.44	4.32	12.00	2.00	8.72	8.75	Note-3	0.50	-	8.75	13.00	12	1.00
10	17.50	1.81	12.75	1.88	12.62	10.75	2.56	3.75	4.56	12.00	2.19	10.88	10.92	Note-3	0.50	-	10.88	15.25	16	1.13
12	20.50	1.94	15.00	2.00	14.75	12.75	2.82	4.00	5.06	12.00	2.38	12.88	12.92	Note-3	0.50	-	12.94	17.75	16	1.25
14	23.00	2.06	16.25	2.12	16.75	14.00	2.94	4.38	5.56	12.00	2.50	14.14	14.18	Note-3	0.50	-	14.19	20.25	20	1.25
16	25.50	2.19	18.50	2.25	19.00	16.00	3.19	4.75	5.69	12.00	2.69	16.16	16.19	Note-3	0.50	-	16.19	22.50	20	1.38
18	28.00	2.31	21.00	2.38	21.00	18.00	3.44	5.12	6.19	12.00	2.75	18.18	18.20	Note-3	0.50	-	18.19	24.75	24	1.38
20	30.50	2.44	23.00	2.50	23.12	20.00	3.69	5.50	6.32	12.00	2.88	20.20	20.25	Note-3	0.50	-	20.19	27.00	24	1.38
22	33.00	2.56	25.25	2.62	25.25	22.00	3.94	5.69	6.44	12.00	-	22.22	22.25	Note-3	0.50	-	-	29.25	24	1.63
24	36.00	2.69	27.25	2.75	27.62	24.00	4.13	6.00	6.56	12.00	3.25	24.25	24.25	Note-3	0.50	-	24.19	32.00	24	1.63
Notes: (1) This dimension is for the large end of the hub, which may be straight or tapered. Taper shall not exceed 7 deg on threaded, slip-on, socket-welding, and lapped flanges. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. (3) To be specified by the Customer; Y4 - the length can be 9" (B16.5) or 12" (industry),shall be specified by the customer. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-030 Rev. 1 10/01/2020

ASME B16.5-2017

Download Specs

						Length Through Hub					Bore						Bolt
Nominal Pipe Size/ Bore for LWN	Outside Diameter	Min. Thickness	Diameter of Raised Face	Diameter of Hub	Diameter Beginning of Chamefer Welding Neck	Threaded Slip-on Socket Welding	Lapped	Welding Neck	Long Welding Neck	Minimum Thread Length Threaded	Minimum Slip-On Socket Welding	Minimum Lapped	Welding Neck / Socket Welding	Corner Bore Radius of Lapped Flange and Pipe	Depth of Socket	Minimum Counter-bore Threaded Flange	Bolt Circle Dia	Number of Holes	Diameter of Holes
J	O	tf	R	X	A	Y1	Y2	Y3	Y4	T	B1	B2	B3	r	D	Q
½	3.75	0.56	1.38	1.50	0.84	0.88	0.88	2.06	9.00	0.62	0.88	0.90	Note-3	0.12	0.38	0.93	2.62	4	0.63
¾	4.62	0.62	1.69	1.88	1.05	1.00	1.00	2.25	9.00	0.62	1.09	1.11	Note-3	0.12	0.44	1.14	3.25	4	0.75
1	4.88	0.69	2.00	2.12	1.32	1.06	1.06	2.44	9.00	0.69	1.36	1.38	Note-3	0.12	0.50	1.41	3.50	4	0.75
1¼	5.25	0.81	2.50	2.50	1.66	1.12	1.12	2.62	9.00	0.81	1.70	1.72	Note-3	0.19	0.56	1.75	3.88	4	0.75
1½	6.12	0.88	2.88	2.75	1.90	1.25	1.25	2.75	9.00	0.88	1.95	1.97	Note-3	0.25	0.62	1.99	4.50	4	0.88
2	6.50	1.00	3.62	3.31	2.38	1.44	1.44	2.88	9.00	1.12	2.44	2.46	Note-3	0.31	0.69	2.50	5.00	8	0.75
2½	7.50	1.12	4.12	3.94	2.88	1.62	1.62	3.12	9.00	1.25	2.94	2.97	Note-3	0.31	0.75	3.00	5.88	8	0.88
3	8.25	1.25	5.00	4.62	3.50	1.81	1.81	3.25	9.00	1.38	3.57	3.60	Note-3	0.38	0.81	3.63	6.62	8	0.88
3½	9.00	1.38	5.50	5.25	4.00	1.94	1.94	3.38	9.00	1.56	4.07	4.10	Note-3	0.38	-	4.13	7.25	8	1.00
4	10.00	1.38	6.19	5.75	4.50	2.00	2.00	3.50	Note-3	1.44	4.57	4.60	Note-3	0.44	-	4.63	7.88	8	1.00
5	11.00	1.50	7.31	7.00	5.56	2.12	2.12	4.00	12.00	1.69	5.66	5.69	Note-3	0.44	-	5.69	9.25	8	1.00
6	12.50	1.62	8.50	8.12	6.63	2.25	2.25	4.06	12.00	1.81	6.72	6.75	Note-3	0.50	-	6.75	10.62	12	1.00
8	15.00	1.88	10.62	10.25	8.63	2.69	2.69	4.62	12.00	2.00	8.72	8.75	Note-3	0.50	-	8.75	13.00	12	1.13
10	17.50	2.12	12.75	12.62	10.75	2.88	4.00	4.88	12.00	2.19	10.88	10.92	Note-3	0.50	-	10.88	15.25	16	1.25
12	20.50	2.25	15.00	14.75	12.75	3.12	4.25	5.38	12.00	2.38	12.88	12.92	Note-3	0.50	-	12.94	17.75	16	1.38
14	23.00	2.38	16.25	16.75	14.00	3.31	4.62	5.88	12.00	2.50	14.14	14.18	Note-3	0.50	-	14.19	20.25	20	1.38
16	25.50	2.50	18.50	19.00	16.00	3.69	5.00	6.00	12.00	2.69	16.16	16.19	Note-3	0.50	-	16.19	22.50	20	1.50
18	28.00	2.62	21.00	21.00	18.00	3.88	5.38	6.50	12.00	2.75	18.18	18.20	Note-3	0.50	-	18.19	24.75	24	1.50
20	30.50	2.75	23.00	23.12	20.00	4.00	5.75	6.62	12.00	2.88	20.20	20.25	Note-3	0.50	-	20.19	27.00	24	1.63
22	33.00	2.88	25.25	25.25	22.00	4.25	6.00	6.75	12.00	-	22.22	22.25	Note-3	0.50	-	-	29.25	24	1.75
24	36.00	3.00	27.25	27.62	24.00	4.50	6.25	6.88	12.00	3.25	24.25	24.25	Note-3	0.50	-	24.19	32.00	24	1.88
Notes: (1) This dimension is for the large end of the hub, which may be straight or tapered. Taper shall not exceed 7 deg on threaded, slip-on, socket-welding, and lapped flanges. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. (3) To be specified by the Customer; Y4 - the length can be 9" (B16.5) or 12" (industry), shall be specified by the customer. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-030 Rev. 1 10/01/2020

ASME B16.5-2017

Download Specs

						Length Through Hub					Bore						Bolt
Nominal Pipe Size/ Bore for LWN	Outside Diameter	Min. Thickness	Diameter of Raised Face	Diameter of Hub	Diameter Beginning of Chamefer Welding Neck	Threaded Slip-on Socket Welding	Lapped	Welding Neck	Long Welding Neck	Minimum Thread Length Threaded	Minimum Slip-On Socket Welding	Minimum Lapped	Welding Neck / Socket Welding	Corner Bore Radius of Lapped Flange and Pipe	Depth of Socket	Minimum Counter-bore Threaded Flange	Bolt Circle Dia	Number of Holes	Diameter of Holes
J	O	tf	R	X	A	Y1	Y2	Y3	Y4	T	B1	B2	B3	r	D	Q
½	3.75	0.56	1.38	1.50	0.84	0.88	0.88	2.06	9.00	0.62	0.88	0.90	Note-3	0.12	0.38	0.93	2.62	4	0.63
¾	4.62	0.62	1.69	1.88	1.05	1.00	1.00	2.25	9.00	0.62	1.09	1.11	Note-3	0.12	0.44	1.14	3.25	4	0.75
1	4.88	0.69	2.00	2.12	1.32	1.06	1.06	2.44	9.00	0.69	1.36	1.38	Note-3	0.12	0.50	1.41	3.50	4	0.75
1¼	5.25	0.81	2.50	2.50	1.66	1.12	1.12	2.62	9.00	0.81	1.70	1.72	Note-3	0.19	0.56	1.75	3.88	4	0.75
1½	6.12	0.88	2.88	2.75	1.90	1.25	1.25	2.75	9.00	0.88	1.95	1.97	Note-3	0.25	0.62	1.99	4.50	4	0.88
2	6.50	1.00	3.62	3.31	2.38	1.44	1.44	2.88	9.00	1.12	2.44	2.46	Note-3	0.31	0.69	2.50	5.00	8	0.75
2½	7.50	1.12	4.12	3.94	2.88	1.62	1.62	3.12	9.00	1.25	2.94	2.97	Note-3	0.31	0.75	3.00	5.88	8	0.88
3	8.25	1.25	5.00	4.62	3.50	1.81	1.81	3.25	9.00	1.38	3.57	3.60	Note-3	0.38	0.81	3.63	6.62	8	0.88
3½	9.00	1.38	5.50	5.25	4.00	1.94	1.94	3.38	9.00	1.56	4.07	4.10	Note-3	0.38	-	4.13	7.25	8	1.00
4	10.75	1.50	6.19	6.00	4.50	2.12	2.12	4.00	Note-3	1.62	4.57	4.60	Note-3	0.44	-	4.63	8.50	8	1.00
5	13.00	1.75	7.31	7.44	5.56	2.38	2.38	4.50	12.00	1.88	5.66	5.69	Note-3	0.44	-	5.69	10.50	8	1.12
6	14.00	1.88	8.50	8.75	6.63	2.62	2.62	4.62	12.00	2.00	6.72	6.75	Note-3	0.50	-	6.75	11.50	12	1.12
8	16.50	2.19	10.62	10.75	8.63	3.00	3.00	5.25	12.00	2.25	8.72	8.75	Note-3	0.50	-	8.75	13.75	12	1.25
10	20.00	2.50	12.75	13.50	10.75	3.38	4.38	6.00	12.00	2.56	10.88	10.92	Note-3	0.50	-	10.88	17.00	16	1.38
12	22.00	2.62	15.00	15.75	12.75	3.62	4.62	6.12	12.00	2.75	12.88	12.92	Note-3	0.50	-	12.94	19.25	20	1.38
14	23.75	2.75	16.25	17.00	14.00	3.69	5.00	6.50	12.00	2.88	14.14	14.18	Note-3	0.50	-	14.19	20.75	20	1.50
16	27.00	3.00	18.50	19.50	16.00	4.19	5.50	7.00	12.00	3.06	16.16	16.19	Note-3	0.50	-	16.19	23.75	20	1.62
18	29.25	3.25	21.00	21.50	18.00	4.62	6.00	7.25	12.00	3.12	18.18	18.20	Note-3	0.50	-	18.19	25.75	20	1.75
20	32.00	3.50	23.00	24.00	20.00	5.00	6.50	7.50	12.00	3.25	20.20	20.25	Note-3	0.50	-	20.19	28.50	24	1.75
22	34.25	3.75	25.25	26.25	22.00	5.25	6.88	7.75	12.00	-	22.22	22.25	Note-3	0.50	-	-	30.63	24	1.88
24	37.00	4.00	27.25	28.25	24.00	5.50	7.25	8.00	12.00	3.62	24.25	24.25	Note-3	0.50	-	24.19	33.00	24	2.00
Notes: (1) This dimension is for the large end of the hub, which may be straight or tapered. Taper shall not exceed 7 deg on threaded, slip-on, socket-welding, and lapped flanges. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. (3) To be specified by the Customer; Y4 - the length can be 9" (B16.5) or 12" (industry), shall be specified by the customer. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-030 Rev. 1 10/01/2020

ASME B16.5-2017

Download Specs

						Length Through Hub					Bore						Bolt
Nominal Pipe Size/ Bore for LWN	Outside Diameter	Min. Thickness	Diameter of Raised Face	Diameter of Hub	Diameter Beginning of Chamefer Welding Neck	Threaded Slip-on Socket Welding	Lapped	Welding Neck	Long Welding Neck	Minimum Thread Length Threaded	Minimum Slip-On Socket Welding	Minimum Lapped	Welding Neck / Socket Welding	Corner Bore Radius of Lapped Flange and Pipe	Depth of Socket	Minimum Counter-bore Threaded Flange	Bolt Circle Dia	Number of Holes	Diameter of Holes
J	O	tf	R	X	A	Y1	Y2	Y3	Y4	T	B1	B2	B3	r	D	Q
½	4.75	0.88	1.38	1.50	0.84	1.25	1.25	2.38	9.00	0.88	0.88	0.90	Note-3	0.12	0.38	0.93	3.25	4	0.88
¾	5.12	1.00	1.69	1.75	1.05	1.38	1.38	2.75	9.00	1.00	1.09	1.11	Note-3	0.12	0.44	1.14	3.50	4	0.88
1	5.88	1.12	2.00	2.06	1.32	1.62	1.62	2.88	9.00	1.12	1.36	1.38	Note-3	0.12	0.50	1.41	4.00	4	1.00
1¼	6.25	1.12	2.50	2.50	1.66	1.62	1.62	2.88	9.00	1.19	1.70	1.72	Note-3	0.19	0.56	1.75	4.38	4	1.00
1½	7.00	1.25	2.88	2.75	1.90	1.75	1.75	3.25	9.00	1.25	1.95	1.97	Note-3	0.25	0.62	1.99	4.88	4	1.13
2	8.50	1.50	3.63	4.12	2.38	2.25	2.25	4.00	9.00	1.50	2.44	2.46	Note-3	0.31	0.69	2.50	6.50	8	1.00
2½	9.62	1.62	4.13	4.88	2.88	2.50	2.50	4.12	9.00	1.88	2.94	2.97	Note-3	0.31	0.75	3.00	7.50	8	1.13
3	9.50	1.50	5.00	5.00	3.50	2.12	2.12	4.00	9.00	1.62	3.57	3.60	Note-3	0.38	-	3.63	7.50	8	1.00
4	11.50	1.75	6.19	6.25	4.50	2.75	2.75	4.50	Note-3	1.88	4.57	4.60	Note-3	0.44	-	4.63	9.25	8	1.25
5	13.75	2.00	7.31	7.50	5.56	3.12	3.12	5.00	12.00	2.12	5.66	5.69	Note-3	0.44	-	5.69	11.00	8	1.38
6	15.00	2.19	8.50	9.25	6.63	3.38	3.38	5.50	12.00	2.25	6.72	6.75	Note-3	0.50	-	6.75	12.50	12	1.25
8	18.50	2.50	10.62	11.75	8.63	4.00	4.50	6.38	12.00	2.50	8.72	8.75	Note-3	0.50	-	8.75	15.50	12	1.50
10	21.50	2.75	12.75	14.50	10.75	4.25	5.00	7.25	12.00	2.81	10.88	10.92	Note-3	0.50	-	10.88	18.50	16	1.50
12	24.00	3.12	15.00	16.50	12.75	4.62	5.62	7.88	12.00	3.00	12.88	12.92	Note-3	0.50	-	12.94	21.00	20	1.50
14	25.25	3.38	16.25	17.75	14.00	5.12	6.12	8.38	12.00	3.25	14.14	14.18	Note-3	0.50	-	14.19	22.00	20	1.63
16	27.75	3.50	18.50	20.00	16.00	5.25	6.50	8.50	12.00	3.38	16.16	16.19	Note-3	0.50	-	16.19	24.25	20	1.75
18	31.00	4.00	21.00	22.25	18.00	6.00	7.50	9.00	12.00	3.50	18.18	18.20	Note-3	0.50	-	18.19	27.00	20	2.00
20	33.75	4.25	23.00	24.50	20.00	6.25	8.25	9.75	12.00	3.62	20.20	20.25	Note-3	0.50	-	20.19	29.50	20	2.13
24	41.00	5.50	27.25	29.50	24.00	8.00	10.50	11.50	12.00	4.00	24.25	24.25	Note-3	0.50	-	24.19	35.50	20	2.63
Notes: (1) This dimension is for the large end of the hub, which may be straight or tapered. Taper shall not exceed 7 deg on threaded, slip-on, socket-welding, and lapped flanges. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.25 in. or the tf dimension thickeness without the raised face height. (3) To be specified by the Customer; Y4 - the length can be 9" (B16.5) or 12" (industry), shall be specified by the customer. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-030 Rev. 1 10/01/2020

ASME B16.5-2017

Download Specs

						Length Through Hub					Bore						Bolt
Nominal Pipe Size/ Bore for LWN	Outside Diameter	Min. Thickness	Diameter of Raised Face	Diameter of Hub	Diameter Beginning of Chamefer Welding Neck	Threaded Slip-on Socket Welding	Lapped	Welding Neck	Long Welding Neck	Minimum Thread Length Threaded	Minimum Slip-On Socket Welding	Minimum Lapped	Welding Neck / Socket Welding	Corner Bore Radius of Lapped Flange and Pipe	Depth of Socket	Minimum Counter-bore Threaded Flange	Bolt Circle Dia	Number of Holes	Diameter of Holes
J	O	tf	R	X	A	Y1	Y2	Y3	Y4	T	B1	B2	B3	r	D	Q
½	4.75	0.88	1.38	1.50	0.84	1.25	1.25	2.38	9.00	0.88	0.88	0.90	Note-3	0.12	0.38	0.93	3.25	4	0.88
¾	5.12	1.00	1.69	1.75	1.05	1.38	1.38	2.75	9.00	1.00	1.09	1.11	Note-3	0.12	0.44	1.14	3.50	4	0.88
1	5.88	1.12	2.00	2.06	1.32	1.62	1.62	2.88	9.00	1.12	1.36	1.38	Note-3	0.12	0.50	1.41	4.00	4	1.00
1¼	6.25	1.12	2.50	2.50	1.66	1.62	1.62	2.88	9.00	1.19	1.70	1.72	Note-3	0.19	0.56	1.75	4.38	4	1.00
1½	7.00	1.25	2.88	2.75	1.90	1.75	1.75	3.25	9.00	1.25	1.95	1.97	Note-3	0.25	0.62	1.99	4.88	4	1.13
2	8.50	1.50	3.62	4.12	2.38	2.25	2.25	4.00	9.00	1.50	2.44	2.46	Note-3	0.31	0.69	2.50	6.50	8	1.00
2½	9.62	1.62	4.12	4.88	2.88	2.50	2.50	4.12	9.00	1.88	2.94	2.97	Note-3	0.31	0.75	3.00	7.50	8	1.13
3	10.50	1.88	5.00	5.25	3.50	-	2.88	4.62	9.00	-	-	3.60	Note-3	0.38	-	-	8.00	8	1.25
4	12.25	2.12	6.19	6.38	4.50	-	3.56	4.88	Note-3	-	-	4.60	Note-3	0.44	-	-	9.50	8	1.38
5	14.75	2.88	7.31	7.75	5.56	-	4.12	6.12	12.00	-	-	5.69	Note-3	0.44	-	-	11.50	8	1.63
6	15.50	3.25	8.50	9.00	6.63	-	4.69	6.75	12.00	-	-	6.75	Note-3	0.50	-	-	12.50	12	1.50
8	19.00	3.62	10.62	11.50	8.63	-	5.62	8.38	12.00	-	-	8.75	Note-3	0.50	-	-	15.50	12	1.75
10	23.00	4.25	12.75	14.50	10.75	-	7.00	10.00	12.00	-	-	10.92	Note-3	0.50	-	-	19.00	12	2.00
12	26.50	4.88	15.00	17.75	12.75	-	8.62	11.12	12.00	-	-	12.92	Note-3	0.50	-	-	22.50	16	2.13
14	29.50	5.25	16.25	19.50	14.00	-	9.50	11.75	12.00	-	-	14.18	Note-3	0.50	-	-	25.00	16	2.38
16	32.50	5.75	18.50	21.75	16.00	-	10.25	12.25	12.00	-	-	16.19	Note-3	0.50	-	-	27.75	16	2.63
18	36.00	6.38	21.00	23.50	18.00	-	10.88	12.88	12.00	-	-	18.20	Note-3	0.50	-	-	30.50	16	2.88
20	38.75	7.00	23.00	25.25	20.00	-	11.50	14.00	12.00	-	-	20.25	Note-3	0.50	-	-	32.75	16	3.13
24	46.00	8.00	27.25	30.00	24.00	-	13.00	16.00	12.00	-	-	24.25	Note-3	0.50	-	-	39.00	16	3.63
Notes: (1) This dimension is for the large end of the hub, which may be straight or tapered. Taper shall not exceed 7 deg on threaded, slip-on, socket-welding, and lapped flanges. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.25 in. or the tf dimension thickeness without the raised face height. (3) To be specified by the Customer; Y4 - the length can be 9" (B16.5) or 12" (industry), shall be specified by the customer. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-030 Rev. 1 10/01/2020

ASME B16.5-2017

Download Specs

						Length Through Hub					Bore				Bolt
Nominal Pipe Size/ Bore for LWN	Outside Diameter	Min. Thickness	Diameter of Raised Face	Diameter of Hub	Hub Diameter Beginning of Chamefer Welding Neck	Threaded	Lapped	Welding Neck	Long Welding Neck	Minimum Thread Length Threaded	Minimum Lapped	Welding Neck	Corner Bore Radius of Lapped Flange and Pipe	Minimum Counter-bore Threaded Flange	Bolt Circle Dia	Number of Holes	Diameter of Holes
J	O	tf	R	X	A	Y1	Y2	Y3	Y4	T	B2	B3	r	Q
½	5.25	1.19	1.38	1.69	0.84	1.56	1.56	2.88	9.00	1.12	0.90	Note-3	0.12	0.93	3.50	4	0.88
¾	5.50	1.25	1.69	2.00	1.05	1.69	1.69	3.12	9.00	1.25	1.11	Note-3	0.12	1.14	3.75	4	0.88
1	6.25	1.38	2.00	2.25	1.32	1.88	1.88	3.50	9.00	1.38	1.38	Note-3	0.12	1.41	4.25	4	1.00
1¼	7.25	1.50	2.50	2.88	1.66	2.06	2.06	3.75	9.00	1.50	1.72	Note-3	0.19	1.75	5.12	4	1.13
1½	8.00	1.75	2.88	3.12	1.90	2.38	2.38	4.38	9.00	1.75	1.97	Note-3	0.25	1.99	5.75	4	1.25
2	9.25	2.00	3.62	3.75	2.38	2.75	2.75	5.00	9.00	2.00	2.46	Note-3	0.31	2.50	6.75	8	1.13
2½	10.50	2.25	4.12	4.50	2.88	3.12	3.12	5.62	9.00	2.25	2.97	Note-3	0.31	3.00	7.75	8	1.25
3	12.00	2.62	5.00	5.25	3.50	-	3.62	6.62	9.00	-	3.60	Note-3	0.38	-	9.00	8	1.38
4	14.00	3.00	6.19	6.50	4.50	-	4.25	7.50	Note-3	-	4.60	Note-3	0.44	-	10.75	8	1.63
5	16.50	3.62	7.31	8.00	5.56	-	5.12	9.00	12.00	-	5.69	Note-3	0.44	-	12.75	8	1.88
6	19.00	4.25	8.50	9.25	6.63	-	6.00	10.75	12.00	-	6.75	Note-3	0.50	-	14.50	8	2.13
8	21.75	5.00	10.63	12.00	8.63	-	7.00	12.50	12.00	-	8.75	Note-3	0.50	-	17.25	12	2.13
10	26.50	6.50	12.75	14.75	10.75	-	9.00	16.50	12.00	-	10.92	Note-3	0.50	-	21.25	12	2.63
12	30.00	7.25	15.00	17.38	12.75	-	10.00	18.25	12.00	-	12.92	Note-3	0.50	-	24.38	12	2.88
Notes: (1) This dimension is for the large end of the hub, which may be straight or tapered. Taper shall not exceed 7 deg on threaded, slip-on, socket-welding, and lapped flanges. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. (3) To be specified by the Customer; Y4 - the length can be 9" (B16.5) or 12" (industry),shall be specified by the customer. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-030 Rev. 1 10/01/2020

Series A

ASME B16.47-2017

Download Specs

		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub Top	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	34.25	2.63	2.63	4.69	26.62	26.00	29.50	0.38	Note-1	31.75	24	1.38
28	36.50	2.75	2.75	4.88	28.62	28.00	31.50	0.44	Note-1	34.00	28	1.38
30	38.75	2.88	2.88	5.32	30.75	30.00	33.75	0.44	Note-1	36.00	28	1.38
32	41.75	3.13	3.13	5.63	32.75	32.00	36.00	0.44	Note-1	38.50	28	1.63
34	43.75	3.19	3.19	5.82	34.75	34.00	38.00	0.50	Note-1	40.50	32	1.63
36	46.00	3.50	3.50	6.13	36.75	36.00	40.25	0.50	Note-1	42.75	32	1.63
38	48.75	3.38	3.38	6.13	39.00	38.00	42.25	0.50	Note-1	45.25	32	1.63
40	50.75	3.50	3.50	6.38	41.00	40.00	44.25	0.50	Note-1	47.25	36	1.63
42	53.00	3.75	3.75	6.69	43.00	42.00	47.00	0.50	Note-1	49.50	36	1.63
44	55.25	3.94	3.94	6.94	45.00	44.00	49.00	0.50	Note-1	51.75	40	1.63
46	57.25	4.00	4.00	7.25	47.12	46.00	51.00	0.50	Note-1	53.75	40	1.63
48	59.50	4.19	4.19	7.50	49.12	48.00	53.50	0.50	Note-1	56.00	44	1.63
50	61.75	4.32	4.32	7.94	51.52	50.00	55.50	0.50	Note-1	58.25	44	1.88
52	64.00	4.50	4.50	8.19	53.25	52.00	57.50	0.50	Note-1	60.50	44	1.88
54	66.25	4.69	4.69	8.44	55.25	54.00	59.50	0.50	Note-1	62.75	44	1.88
56	68.75	4.82	4.82	8.94	57.38	56.00	62.00	0.50	Note-1	65.00	48	1.88
58	71.00	5.00	5.00	9.19	59.38	58.00	64.00	0.50	Note-1	67.25	48	1.88
60	73.00	5.13	5.13	9.38	61.38	60.00	66.00	0.50	Note-1	69.25	52	1.88
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-031 Rev. 0 08/01/2019

Series A

ASME B16.47-2017

Download Specs

		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub Top	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	38.25	3.07	3.25	7.19	28.38	26.00	29.50	0.38	Note-1	34.50	28	1.75
28	40.75	3.32	3.50	7.69	30.50	28.00	31.50	0.44	Note-1	37.00	28	1.75
30	43.00	3.57	3.69	8.19	32.56	30.00	33.75	0.44	Note-1	39.25	28	1.88
32	45.25	3.82	3.88	8.69	34.69	32.00	36.00	0.44	Note-1	41.50	28	2.00
34	47.50	3.94	4.07	9.07	36.88	34.00	38.00	0.50	Note-1	43.50	28	2.00
36	50.00	4.07	4.32	9.44	39.00	36.00	40.25	0.50	Note-1	46.00	32	2.13
38	46.00	4.19	4.19	7.06	39.12	38.00	40.50	0.50	Note-1	43.00	32	1.63
40	48.75	4.44	4.44	7.56	41.25	40.00	42.75	0.50	Note-1	45.50	32	1.75
42	50.75	4.63	4.63	7.82	43.25	42.00	44.75	0.50	Note-1	47.50	32	1.75
44	53.25	4.82	4.82	8.06	45.25	44.00	47.00	0.50	Note-1	49.75	32	1.88
46	55.75	5.00	5.00	8.44	47.38	46.00	49.00	0.50	Note-1	52.00	28	2.00
48	57.75	5.19	5.19	8.75	49.38	48.00	51.25	0.50	Note-1	54.00	32	2.00
50	60.25	5.44	5.44	9.07	51.38	50.00	53.50	0.50	Note-1	56.25	32	2.13
52	62.25	5.63	5.63	9.32	53.38	52.00	55.50	0.50	Note-1	58.25	32	2.13
54	65.25	5.94	5.94	9.88	55.50	54.00	57.75	0.50	Note-1	61.00	28	2.38
56	67.25	6.00	6.00	10.19	57.62	56.00	59.75	0.50	Note-1	63.00	28	2.38
58	69.25	6.19	6.19	10.44	59.62	58.00	62.00	0.50	Note-1	65.00	32	2.38
60	71.25	6.38	6.38	10.69	61.62	60.00	64.00	0.50	Note-1	67.00	32	2.38
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-031 Rev. 0 08/01/2019

Series A

ASME B16.47-2017

Download Specs

		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub Top	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	38.25	3.50	3.88	7.62	28.62	26.00	29.50	0.44	Note-1	34.50	28	1.88
28	40.75	3.75	4.12	8.12	30.81	28.00	31.50	0.50	Note-1	37.00	28	2.00
30	43.00	4.00	4.38	8.62	32.94	30.00	33.75	0.50	Note-1	39.25	28	2.13
32	45.25	4.25	4.56	9.12	35.00	32.00	36.00	0.50	Note-1	41.50	28	2.13
34	47.50	4.38	4.81	9.50	37.19	34.00	38.00	0.56	Note-1	43.50	28	2.13
36	50.00	4.50	5.06	9.88	39.38	36.00	40.25	0.56	Note-1	46.00	32	2.13
38	47.50	4.88	4.88	8.12	39.50	38.00	40.75	0.56	Note-1	44.00	32	1.88
40	50.00	5.12	5.12	8.50	41.50	40.00	43.00	0.56	Note-1	46.25	32	2.00
42	52.00	5.25	5.25	8.81	43.62	42.00	45.00	0.56	Note-1	48.25	32	2.00
44	54.50	5.50	5.50	9.18	45.62	44.00	47.25	0.56	Note-1	50.50	32	2.13
46	56.75	5.75	5.75	9.62	47.75	46.00	49.50	0.56	Note-1	52.75	36	2.13
48	59.50	6.00	6.00	10.12	49.88	48.00	51.50	0.56	Note-1	55.25	28	2.38
50	61.75	6.19	6.25	10.56	52.00	50.00	53.62	0.56	Note-1	57.50	32	2.38
52	63.75	6.38	6.44	10.88	54.00	52.00	55.62	0.56	Note-1	59.50	32	2.38
54	67.00	6.69	6.75	11.38	56.12	54.00	57.88	0.56	Note-1	62.25	28	2.63
56	69.00	6.88	6.94	11.75	58.25	56.00	60.12	0.56	Note-1	64.25	32	2.63
58	71.00	7.00	7.12	12.06	60.25	58.00	62.12	0.56	Note-1	66.25	32	2.63
60	74.25	7.31	7.44	12.56	62.38	60.00	64.18	0.56	Note-1	69.00	32	2.88
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.25 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-031 Rev. 0 08/01/2019

Series A

ASME B16.47-2017

Download Specs

		Minimum Thickness							Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub Top	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	40.00	4.25	4.94	8.75	29.44	26.00	29.50	0.50	Note-1	36.00	28	2.00
28	42.25	4.38	5.19	9.25	31.62	28.00	31.50	0.50	Note-1	38.00	28	2.13
30	44.50	4.50	5.50	9.75	33.94	30.00	33.75	0.50	Note-1	40.25	28	2.13
32	47.00	4.62	5.81	10.25	36.12	32.00	36.00	0.50	Note-1	42.50	28	2.38
34	49.00	4.75	6.06	10.62	38.31	34.00	38.00	0.56	Note-1	44.50	28	2.38
36	51.75	4.88	6.38	11.12	40.62	36.00	40.25	0.56	Note-1	47.00	28	2.63
38	50.00	6.00	6.12	10.00	40.25	38.00	41.50	0.56	Note-1	45.75	28	2.38
40	52.00	6.25	6.38	10.38	42.25	40.00	43.75	0.56	Note-1	47.75	32	2.38
42	55.25	6.62	6.75	11.00	44.38	42.00	46.00	0.56	Note-1	50.50	28	2.63
44	57.25	6.81	7.00	11.38	46.50	44.00	48.25	0.56	Note-1	52.50	32	2.63
46	59.50	7.06	7.31	11.81	48.62	46.00	50.25	0.56	Note-1	54.75	32	2.63
48	62.75	7.44	7.69	12.44	50.75	48.00	52.25	0.56	Note-1	57.50	32	2.88
50	65.75	7.75	8.00	12.94	52.88	50.00	54.50	0.56	Note-1	60.00	28	3.13
52	67.75	8.00	8.25	13.25	54.88	52.00	56.50	0.56	Note-1	62.00	32	3.13
54	70.00	8.25	8.56	13.75	57.00	54.00	58.75	0.56	Note-1	64.25	32	3.13
56	73.00	8.56	8.88	14.25	59.12	56.00	60.75	0.62	Note-1	66.75	32	3.38
58	75.00	8.75	9.12	14.56	61.12	58.00	63.00	0.62	Note-1	68.75	32	3.38
60	78.50	9.19	9.56	15.31	63.38	60.00	65.25	0.69	Note-1	71.75	28	3.63
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.25 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-031 Rev. 0 08/01/2019

ASME B16.47-2017

Download Specs

		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub Top	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	42.75	5.50	6.31	11.25	30.50	26.00	29.50	0.44	Note-1	37.50	20	2.88
28	46.00	5.62	6.75	11.75	32.75	28.00	31.50	0.50	Note-1	40.25	20	3.13
30	48.50	5.88	7.18	12.25	35.00	30.00	33.75	0.50	Note-1	42.75	20	3.13
32	51.75	6.25	7.62	13.00	37.25	32.00	36.00	0.50	Note-1	45.50	20	3.38
34	55.00	6.50	8.06	13.75	39.62	34.00	38.00	0.56	Note-1	48.25	20	3.63
36	57.50	6.75	8.44	14.25	41.88	36.00	40.25	0.56	Note-1	50.75	20	3.63
38	57.50	7.50	8.50	13.88	42.25	38.00	43.25	0.75	Note-1	50.75	20	3.63
40	59.50	7.75	8.81	14.31	44.38	40.00	45.75	0.81	Note-1	52.75	24	3.63
42	61.50	8.12	9.12	14.62	46.31	42.00	47.75	0.81	Note-1	54.75	24	3.63
44	64.88	8.44	9.56	15.38	48.62	44.00	50.00	0.88	Note-1	57.62	24	3.88
46	68.25	8.88	10.06	16.18	50.88	46.00	52.50	0.88	Note-1	60.50	24	4.13
48	70.25	9.19	10.38	16.50	52.88	48.00	54.50	0.94	Note-1	62.50	24	4.13
50	-	-	-	-	-	-	-	-	-	-	-	-
52	-	-	-	-	-	-	-	-	-	-	-	-
54	-	-	-	-	-	-	-	-	-	-	-	-
56	-	-	-	-	-	-	-	-	-	-	-	-
58	-	-	-	-	-	-	-	-	-	-	-	-
60	-	-	-	-	-	-	-	-	-	-	-	-
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.25 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-031 Rev. 0 08/01/2019

Dimensions of

ASME B16.47-2017

Download Specs

Nominal Pipe Size for class					Groove Dimensions
				Groove Number	Pitch Diameter	Depth *Note 1	Width	Radius at Bottom	Min. Diameter of Raised Portion
300	400	600	900		P	E	F	R	K
26	26	26	-	R93	29.500	0.500	0.781	0.06	31.88
28	28	28	-	R94	31.500	0.500	0.781	0.06	33.88
30	30	30	-	R95	33.750	0.500	0.781	0.06	36.12
32	32	32	-	R96	36.000	0.562	0.906	0.06	38.75
34	34	34	-	R97	38.000	0.562	0.906	0.06	40.75
36	36	36	-	R98	40.250	0.562	0.906	0.06	43.00
-	-	-	26	R100	29.500	0.688	1.188	0.09	32.75
-	-	-	28	R101	31.500	0.688	1.312	0.09	35.00
-	-	-	30	R102	33.750	0.688	1.312	0.09	37.25
-	-	-	32	R103	36.000	0.688	1.312	0.09	39.50
-	-	-	34	R104	38.000	0.812	1.438	0.09	42.00
-	-	-	36	R105	40.250	0.812	1.438	0.09	44.25

TOLERANCES
	E	(depth)	+0.016, -0.0
	F	(width)	± 0.008
	P	(pitch diameter)	± 0.005
	R	(raidus at groove bottom)	+ 0.03, -0.0 for R ≤ 0.06
			± 0.03 for R > 0.09
	23O		± ½ ° (deg angle)
Notes: (1) Height of raised portion is equal to the depth of groove dimension E, but is not subjected to the tolerances for E. Full face contour may be used Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-031 Rev. 0 08/01/2019

Series B

ASME B16.47-2017

Download Specs

		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck (Note-2)	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub Top	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	30.00	1.25	1.25	2.25	26.62	26.06	27.75	0.31	Note-1	28.50	36	0.75
28	32.00	1.25	1.25	2.38	28.62	28.06	29.75	0.31	Note-1	30.50	40	0.75
30	34.00	1.25	1.25	2.50	30.62	30.06	31.75	0.31	Note-1	32.50	44	0.75
32	36.00	1.32	1.38	2.69	32.62	32.06	33.75	0.31	Note-1	34.50	48	0.75
34	38.00	1.32	1.44	2.82	34.62	34.06	35.75	0.31	Note-1	36.50	52	0.75
36	40.69	1.38	1.61	3.32	36.81	36.06	38.00	0.38	Note-1	39.06	40	0.88
38	42.69	1.44	1.69	3.44	38.81	38.06	40.00	0.38	Note-1	41.06	40	0.88
40	44.69	1.44	1.69	3.57	40.81	40.06	42.00	0.38	Note-1	43.06	44	0.88
42	46.69	1.50	1.82	3.69	42.81	42.06	44.00	0.38	Note-1	45.06	48	0.88
44	49.25	1.63	1.88	4.07	44.88	44.06	46.25	0.38	Note-1	47.38	36	1.00
46	51.25	1.69	1.94	4.19	46.88	46.06	48.25	0.38	Note-1	49.38	40	1.00
48	53.25	1.75	2.07	4.32	48.88	48.06	50.25	0.38	Note-1	51.38	44	1.00
50	55.25	1.82	2.13	4.50	50.94	50.06	52.25	0.38	Note-1	53.38	44	1.00
52	57.38	1.82	2.19	4.69	52.94	52.06	54.25	0.38	Note-1	55.50	48	1.00
54	59.38	1.88	2.32	4.88	55.00	54.06	56.25	0.38	Note-1	57.50	48	1.00
56	62.00	1.94	2.38	5.25	57.12	56.06	58.50	0.44	Note-1	59.88	40	1.13
58	64.00	2.00	2.44	5.38	59.12	58.06	60.50	0.44	Note-1	61.88	44	1.13
60	66.00	2.13	2.57	5.63	61.12	60.06	62.50	0.44	Note-1	63.88	44	1.13
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GGDL-QA-032 Rev. 0 08/05/2019

Series B

ASME B16.47-2017

Download Specs

		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck (Note-2)	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub Top	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	30.94	1.57	1.69	3.44	26.94	26.06	28.00	0.38	Note-1	29.31	36	0.88
28	32.94	1.69	1.82	3.69	28.94	28.06	30.00	0.38	Note-1	31.31	40	0.88
30	34.94	1.69	1.94	3.88	31.00	30.06	32.00	0.38	Note-1	33.31	44	0.88
32	37.06	1.75	2.07	4.19	33.06	32.06	34.00	0.38	Note-1	35.44	48	0.88
34	39.56	1.88	2.19	4.28	35.12	34.06	36.25	0.38	Note-1	37.69	40	1.00
36	41.62	2.00	2.25	4.57	37.19	36.06	38.25	0.38	Note-1	39.75	44	1.00
38	44.25	2.07	2.44	4.82	39.25	38.12	40.25	0.38	Note-1	42.12	40	1.13
40	46.25	2.13	2.57	5.00	41.31	40.12	42.50	0.38	Note-1	44.12	44	1.13
42	48.25	2.25	2.63	5.19	43.38	42.12	44.50	0.44	Note-1	46.12	48	1.13
44	50.25	2.32	2.75	5.32	45.38	44.12	46.50	0.44	Note-1	48.12	52	1.13
46	52.81	2.38	2.88	5.63	47.44	46.12	48.62	0.44	Note-1	50.56	40	1.25
48	54.81	2.50	3.00	5.82	49.50	48.12	50.75	0.44	Note-1	52.56	44	1.25
50	56.81	2.63	3.13	6.00	51.50	50.12	52.75	0.44	Note-1	54.56	48	1.25
52	58.81	2.69	3.25	6.13	53.56	52.12	54.75	0.44	Note-1	56.56	52	1.25
54	61.00	2.75	3.38	6.32	55.62	54.12	56.75	0.44	Note-1	58.75	56	1.25
56	63.00	2.82	3.50	6.50	57.69	56.12	58.75	0.56	Note-1	60.75	60	1.25
58	65.94	2.88	3.62	6.82	59.69	58.12	60.75	0.56	Note-1	63.44	48	1.38
60	67.94	2.94	3.75	7.00	61.81	60.12	63.00	0.56	Note-1	65.44	52	1.38
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GGDL-QA-032 Rev. 0 08/05/2019

Series B

ASME B16.47-2017

Download Specs

		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck (Note-2)	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub Top	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	34.12	3.44	3.44	5.63	27.62	26.19	29.00	0.56	Note-1	31.62	32	1.38
28	36.25	3.44	3.44	5.81	29.75	28.19	31.00	0.56	Note-1	33.75	36	1.38
30	39.00	3.63	3.63	6.16	32.00	30.25	33.25	0.56	Note-1	36.25	36	1.50
32	41.50	4.00	4.00	6.56	34.00	32.25	35.50	0.62	Note-1	38.50	32	1.63
34	43.62	4.00	4.00	6.75	36.12	34.25	37.50	0.62	Note-1	40.62	36	1.63
36	46.12	4.00	4.00	7.06	38.00	36.25	39.75	0.62	Note-1	42.88	32	1.75
38	48.12	4.31	4.31	7.50	40.00	38.25	41.75	0.62	Note-1	44.88	36	1.75
40	50.12	4.50	4.50	7.75	42.00	40.25	43.88	0.62	Note-1	46.88	40	1.75
42	52.50	4.63	4.63	8.00	44.00	42.31	46.00	0.62	Note-1	49.00	36	1.88
44	54.50	4.94	4.94	8.38	46.19	44.31	48.00	0.62	Note-1	51.00	40	1.88
46	57.50	5.00	5.06	8.69	48.38	46.31	50.00	0.62	Note-1	53.75	36	2.00
48	59.50	5.00	5.25	8.75	50.31	48.31	52.25	0.62	Note-1	55.75	40	2.00
50	61.50	5.38	5.44	9.19	52.38	50.31	54.25	0.62	Note-1	57.75	44	2.00
52	63.50	5.56	5.61	9.50	54.44	52.31	56.25	0.62	Note-1	59.75	48	2.00
54	65.88	5.32	5.81	9.38	56.50	54.31	58.25	0.62	Note-1	62.12	48	2.00
56	69.50	6.00	6.12	10.50	58.81	56.31	60.50	0.69	Note-1	65.00	36	2.38
58	71.94	6.00	6.31	10.75	60.94	58.31	62.75	0.69	Note-1	67.44	40	2.38
60	73.94	5.88	6.50	10.63	62.94	60.31	65.00	0.69	Note-1	69.44	40	2.38
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GGDL-QA-032 Rev. 0 08/05/2019

Series B

ASME B16.47-2017

Download Specs

		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck (Note-2)	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	33.50	3.50	3.50	5.88	27.12	26.00	28.00	0.44	Note-1	30.75	28	1.50
28	36.00	3.75	3.75	6.25	29.12	28.00	30.00	0.50	Note-1	33.00	24	1.63
30	38.25	4.00	4.00	6.69	31.25	30.00	32.25	0.50	Note-1	35.25	28	1.63
32	40.75	4.25	4.25	7.06	33.25	32.00	34.38	0.50	Note-1	37.50	28	1.75
34	42.75	4.38	4.38	7.38	35.38	34.00	36.50	0.56	Note-1	39.50	32	1.75
36	45.50	4.69	4.69	7.88	37.50	36.00	38.62	0.56	Note-1	42.00	28	1.88
38	-	-	-	-	-	-	-	-	-	-	-	-
40	-	-	-	-	-	-	-	-	-	-	-	-
42	-	-	-	-	-	-	-	-	-	-	-	-
44	-	-	-	-	-	-	-	-	-	-	-	-
46	-	-	-	-	-	-	-	-	-	-	-	-
48	-	-	-	-	-	-	-	-	-	-	-	-
50	-	-	-	-	-	-	-	-	-	-	-	-
52	-	-	-	-	-	-	-	-	-	-	-	-
54	-	-	-	-	-	-	-	-	-	-	-	-
56	-	-	-	-	-	-	-	-	-	-	-	-
58	-	-	-	-	-	-	-	-	-	-	-	-
60	-	-	-	-	-	-	-	-	-	-	-	-
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.25 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GGDL-QA-032 Rev. 0 08/05/2019

Series B

ASME B16.47-2017

Download Specs

		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck (Note-2)	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	35.00	4.38	4.38	7.12	27.50	26.00	28.62	0.50	Note-1	31.75	28	1.76
28	37.50	4.56	4.56	7.50	29.62	28.00	30.88	0.50	Note-1	34.00	28	1.88
30	40.25	4.94	5.00	8.06	31.75	30.00	33.12	0.50	Note-1	36.50	28	2.00
32	42.75	5.12	5.31	8.50	33.88	32.00	35.25	0.50	Note-1	38.75	28	2.13
34	45.75	5.56	5.68	9.19	36.00	34.00	37.50	0.56	Note-1	41.50	24	2.38
36	47.75	5.75	5.94	9.56	38.12	36.00	39.75	0.56	Note-1	43.50	28	2.38
38	-	-	-	-	-	-	-	-	-	-	-	-
40	-	-	-	-	-	-	-	-	-	-	-	-
42	-	-	-	-	-	-	-	-	-	-	-	-
44	-	-	-	-	-	-	-	-	-	-	-	-
46	-	-	-	-	-	-	-	-	-	-	-	-
48	-	-	-	-	-	-	-	-	-	-	-	-
50	-	-	-	-	-	-	-	-	-	-	-	-
52	-	-	-	-	-	-	-	-	-	-	-	-
54	-	-	-	-	-	-	-	-	-	-	-	-
56	-	-	-	-	-	-	-	-	-	-	-	-
58	-	-	-	-	-	-	-	-	-	-	-	-
60	-	-	-	-	-	-	-	-	-	-	-	-
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.25 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GGDL-QA-032 Rev. 0 08/05/2019

Series B

ASME B16.47-2017

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		Minimum Thickness								Bolt
Nominal Pipe Size	Outside Diameter	Welding Neck (Note-2)	Blind	Length Through Hub	Diameter of Hub	Diameter of Hub	Diameter of Raised Face	Minimum Fillet Radius	Bore	Diameter of Bolt Circle	Number of Holes	Diameter of Holes
	O	tf	tf	Y	X	A	R	r1	B
26	40.25	5.31	6.06	10.19	29.25	26.00	30.00	0.44	Note-1	35.50	20	2.63
28	43.50	5.81	6.56	10.88	31.38	28.00	32.25	0.50	Note-1	38.25	20	2.88
30	46.50	6.12	6.93	11.38	33.50	30.00	34.50	0.50	Note-1	40.75	20	3.13
32	48.75	6.31	7.31	11.94	35.75	32.00	36.50	0.50	Note-1	43.00	20	3.13
34	51.75	6.75	7.68	12.56	37.88	34.00	39.00	0.56	Note-1	45.50	20	3.38
36	53.00	6.81	7.94	12.81	40.00	36.00	40.50	0.56	Note-1	47.25	24	3.13
38	-	-	-	-	-	-	-	-	-	-	-	-
40	-	-	-	-	-	-	-	-	-	-	-	-
42	-	-	-	-	-	-	-	-	-	-	-	-
44	-	-	-	-	-	-	-	-	-	-	-	-
46	-	-	-	-	-	-	-	-	-	-	-	-
48	-	-	-	-	-	-	-	-	-	-	-	-
50	-	-	-	-	-	-	-	-	-	-	-	-
52	-	-	-	-	-	-	-	-	-	-	-	-
54	-	-	-	-	-	-	-	-	-	-	-	-
56	-	-	-	-	-	-	-	-	-	-	-	-
58	-	-	-	-	-	-	-	-	-	-	-	-
60	-	-	-	-	-	-	-	-	-	-	-	-
Notes: (1) To be specified by the Customer. (2) When these flanges are required with flat face, the flat face may be either the full tfdimension thickness plus 0.25 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GGDL-QA-032 Rev. 0 08/05/2019

ASME B16.47 Series A

These Slip-on are not covered by B16.47, the list here have been added for completeness

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								Bolt
Nominal Pipe Size	Outside Diameter	Min. Thickness	Diameter of Raised Face	Diameter of Hub	Length Through Hub	Bore	Minimum Fillet Radius	Bolt Circle Dia	Number of Holes	Diameter of Holes
	O	tf	R	X	Y1	B1
26	34.25	2.69	29.50	28.25	3.69	26.25	0.38	31.75	24	1.38
28	36.50	3.06	31.50	30.50	3.81	28.25	0.44	34.00	28	1.38
30	38.75	3.31	33.75	32.50	3.94	30.25	0.44	36.00	28	1.38
32	41.75	3.41	36.00	34.50	4.18	32.25	0.44	38.50	28	1.62
34	43.75	3.68	38.00	36.50	4.25	34.25	0.50	40.50	32	1.62
36	46.00	3.96	40.25	38.75	4.56	36.25	0.50	42.75	32	1.62
38	48.75	4.06	42.25	41.25	4.56	38.25	0.50	45.25	32	1.62
40	50.75	4.18	44.25	43.25	4.81	40.25	0.50	47.25	36	1.62
42	53.00	4.43	47.00	45.50	5.06	42.25	0.50	49.50	36	1.62
44	55.25	4.68	49.00	47.75	5.18	44.25	0.50	51.75	40	1.62
46	57.25	4.86	51.00	49.75	5.31	46.25	0.50	53.75	40	1.62
48	59.50	5.06	53.50	52.00	5.56	48.25	0.50	56.00	44	1.62
Notes: (1) This dimension is for the large end of the hub, which may be straight or tapered. Taper shall not exceed 7 deg on threaded, slip-on. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-035 Rev. 0 09/25/2020

ASME B16.47 Series A

These Slip-on are not covered by B16.47, the list here have been added for completeness

Download Specs

								Bolt
Nominal Pipe Size	Outside Diameter	Min. Thickness	Diameter of Raised Face	Diameter of Hub	Length Through Hub	Bore	Minimum Fillet Radius	Bolt Circle Dia	Number of Holes	Diameter of Holes
	O	tf	R	X	Y1	B1
26	38.25	3.12	29.50	30.25	5.37	26.25	0.38	34.50	28	1.75
28	40.75	3.38	31.50	32.75	5.68	28.25	0.44	37.00	28	1.75
30	43.00	3.62	33.75	34.75	6.12	30.25	0.44	39.25	28	1.88
32	45.25	3.88	36.00	36.75	6.56	32.25	0.44	41.50	28	2.00
34	47.50	4.00	38.00	38.75	6.81	34.25	0.50	43.50	28	2.00
36	50.00	4.12	40.25	41.00	7.06	36.25	0.50	46.00	32	2.12
38	46.00	5.31	40.50	39.00	6.06	38.25	0.50	43.00	32	1.62
40	48.75	5.56	42.75	41.25	6.56	40.25	0.50	45.50	32	1.75
42	50.75	5.81	44.75	43.25	6.81	42.25	0.50	47.50	32	1.75
44	53.25	6.06	47.00	45.25	6.86	44.25	0.50	49.75	32	1.88
46	55.75	6.31	49.00	47.25	7.06	46.25	0.50	52.00	28	2.00
48	57.75	6.56	51.25	49.25	7.18	48.25	0.50	54.00	32	2.00
Notes: (1) This dimension is for the large end of the hub, which may be straight or tapered. Taper shall not exceed 7 deg on threaded, slip-on. (2) When these flanges are required with flat face, the flat face may be either the full tf dimension thickness plus 0.06 in. or the tf dimension thickeness without the raised face height. Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-035 Rev. 0 09/25/2020

ASME B16.9-2018

Download Specs

NOMINAL PIPE SIZE	OUTSIDE DIAMETER OF BARREL		LAP JOINT STUB ENDS
			Dia of Lap	Radius	LENGTH (F)
NPS	Max	Min	G	R	ASA-A	MSSA-A
1/2	0.896	0.809	1.38	0.12	3.00	2.00
3/4	1.106	1.019	1.69	0.12	3.00	2.00
1	1.376	1.284	2.00	0.12	4.00	2.00
1 1/4	1.716	1.629	2.50	0.19	4.00	2.00
1 1/2	1.965	1.869	2.88	0.25	4.00	2.00
2	2.456	2.344	3.62	0.31	6.00	2.50
2 1/2	2.966	2.844	4.12	0.31	6.00	2.50
3	3.596	3.469	5.00	0.38	6.00	2.50
3 1/2	4.096	3.969	5.50	0.38	6.00	3.00
4	4.593	4.469	6.19	0.44	6.00	3.00
5	5.683	5.532	7.31	0.44	8.00	3.00
6	6.743	6.594	8.50	0.50	8.00	3.50
8	8.743	8.594	10.62	0.50	8.00	4.00
10	10.913	10.719	12.75	0.50	10.00	5.00
12	12.913	12.719	15.00	0.50	10.00	6.00
14	14.170	13.969	16.25	0.50	12.00	6.00
16	16.180	15.969	18.50	0.50	12.00	6.00
18	18.190	17.969	21.00	0.50	12.00	6.00
20	20.240	19.969	23.00	0.50	12.00	6.00
22	22.240	21.969	25.25	0.50	12.00	6.00
24	24.240	23.969	27.25	0.50	12.00	6.00
Notes: (1) Gasket face finish shall be in accordance with ASME B16.5 for raised face flanges (2) The lap thickness T, shall not be less than nominal pipe wall thickness Although great care has been taken in compiling the information contained in this catalogue, Western Forge & Flange does not accept responsibility for the consequences of any errors, nor for the effects of any subsequent changes made by the various sources of data. GDL-QA-036 Rev. 0 10/01/2020

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Flange Dimensions | ASME B16.5-2017 (2024)

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ASME B16.5-2017

ASME B16.47-2017

ASME B16.47-2017

26” – 48” Slip-Ons

Lap Joint Stub Ends

ASME B16.5-2017

ASME B16.5-2017

ASME B16.5-2017

ASME B16.5-2017

ASME B16.5-2017

ASME B16.5-2017

ASME B16.5-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47-2017

ASME B16.47 Series A

ASME B16.47 Series A

ASME B16.9-2018

References

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