5511 Tomken Road. Unit #1

Mississauga, Ontario L4W 4B8

905-602-2033

Phone

Mon - Fri: 8:30am - 5pm

Hours

5511 Tomken Road. Unit #1

Mississauga, Ontario L4W 4B8

905-602-2033

Phone

Mon - Fri: 8:30 - 5

Hours

Style WR & WRI to ASME B16-47 Series B

Dimensions for Style WR / WRI per ASME B16.20 To suit ASME B16.47 Series B or API-605 Flanges

Class 75
Nom. Pipe Size	Inner Ring I.D.	Winding		Centering Ring Outside Dia.
Nom. Pipe Size	Inner Ring I.D.	I.D.	O.D.	Centering Ring Outside Dia.
26		26.25	27.000	27.875
28		28.250	29.125	29.875
30		30.250	31.125	31.875
32		32.250	33.125	33.875
34		34.250	35.125	35.875
36		36.250	37.250	38.312
38
40
42		42.250	43.250	44.312
44
46
48		48.375	49.500	50.500
50
52
54		54.375	55.625	56.625
56
58
60		60.500	61.750	62.875

Class 150
Nom. Pipe Size	Inner Ring I.D.	Winding		Centering Ring Outside Dia.
Nom. Pipe Size	Inner Ring I.D.	I.D.	O.D.	Centering Ring Outside Dia.
26	25.750	26.500	27.500	28.562
28	27.750	28.500	29.500	30.562
30	29.750	30.500	31.500	32.562
32	31.750	32.500	33.500	34.688
34	33.750	34.500	35.750	36.812
36	35.750	36.500	37.750	38.875
38	37.750	38.375	39.750	41.125
40	39.750	40.250	41.875	43.125
42	41.750	42.500	43.875	45.125
44	43.750	44.250	45.875	47.125
46	45.750	46.500	48.187	49.437
48	47.750	48.500	50.000	51.437
50	49.750	50.500	52.187	53.437
52	51.750	52.500	54.187	55.437
54	53.750	54.500	56.000	57.625
56	56.000	56.875	58.187	59.625
58	58.187	59.062	60.187	62.187
60	60.437	61.312	62.437	64.187

NOTE: Gasket dimensions to suit Class 75 flanges are not specified in ASME B16.20

Class 300
Nom. Pipe Size	Inner Ring I.D.	Winding		Centering Ring Outside Dia.
Nom. Pipe Size	Inner Ring I.D.	I.D.	O.D.	Centering Ring Outside Dia.
26	25.750	26.500	28.000	30.375
28	27.750	28.500	30.000	32.500
30	29.750	30.500	32.000	34.875
32	31.750	32.500	34.000	37.000
34	33.750	34.500	36.000	39.125
36	35.750	36.500	38.000	41.250
38	38.250	39.750	41.250	43.250
40	40.250	41.750	43.250	45.250
42	42.750	43.750	45.250	47.250
44	44.250	45.750	47.250	49.250
46	46.375	47.875	49.375	51.875
48	48.500	49.750	51.625	53.875
50	49.875	51.875	53.375	55.875
52	51.875	53.875	55.375	57.875
54	53.750	55.250	57.250	60.250
56	56.250	58.250	60.000	62.750
58	58.437	60.437	61.937	65.187
60	61.312	62.562	64.187	67.187

Class 400
Nom. Pipe Size	Inner Ring I.D.	Winding		Centering Ring Outside Dia.
Nom. Pipe Size	Inner Ring I.D.	I.D.	O.D.	Centering Ring Outside Dia.
26	25.750	26.250	27.500	29.375
28	27.625	28.125	29.500	31.500
30	29.625	30.125	31.750	33.750
32	31.500	32.000	33.875	35.875
34	33.500	34.125	35.875	37.875
36	35.375	36.125	38.000	40.250
38	37.500	38.250	40.250	42.250
40	39.375	40.375	42.375	44.375
42	41.375	42.375	44.375	46.375
44	43.500	44.500	46.500	48.500
46	46.000	47.000	49.000	50.750
48	47.500	49.000	51.000	53.000
50	49.500	51.000	53.000	55.250
52	51.500	53.000	55.000	57.250
54	53.250	55.250	57.250	59.750
56	55.250	57.250	59.250	61.750
58	57.250	59.250	61.250	63.750
60	59.750	61.750	63.750	66.250

NOTE: Gasket dimensions to suit Class 75 flanges are not specified in ASME B16.20.

Class 600
Nom. Pipe Size	Inner Ring I.D.	Winding		Centering Ring Outside Dia.
Nom. Pipe Size	Inner Ring I.D.	I.D.	O.D.	Centering Ring Outside Dia.
26	25.375	26.125	28.125	30.125
28	27.000	27.750	29.750	32.250
30	29.625	30.625	32.625	34.625
32	31.250	32.750	34.750	36.750
34	33.500	35.000	37.000	39.250
36	35.500	37.000	39.000	41.250
38	37.500	39.000	41.000	43.500
40	39.750	41.250	43.250	45.500
42	42.000	43.500	45.500	48.000
44	43.750	45.750	47.750	50.000
46	45.750	47.750	49.750	52.250
48	48.000	50.000	52.000	54.750
50	50.000	52.000	54.000	57.000
52	52.000	54.000	56.000	59.000
54	54.250	56.250	58.250	61.250
56	56.250	58.250	60.250	63.500
58	58.000	60.500	62.500	65.500
60	60. 250	62.750	64.750	68.250

Class 900
Nom. Pipe Size	Inner Ring I.D.	Winding		Centering Ring Outside Dia.
Nom. Pipe Size	Inner Ring I.D.	I.D.	O.D.	Centering Ring Outside Dia.
26	26.250	27.250	29.500	33.000
28	28.250	29.250	31.500	35.500
30	31.750	31.750	33.750	37.750
32	33.000	34.000	36.000	40.000
34	35.250	36.250	38.250	42.250
36	36.250	37.250	39.250	44.250
38	39.750	40.750	42.750	47.250
40	41.750	43.250	45.250	49.250
42	43.750	45.250	47.250	51.250
44	45.500	47.500	49.500	53.875
46	48.000	50.000	52.000	56.500
48	50.000	52.000	54.000	58.500

DIMENSIONS IN INCHES
Note: There are no class 900 flanges NPS 50 and larger. INNER RINGS are mandatory for class 900 flanges, NPS 26 to 48.