LARGE DIAMETER FLANGES SERIES B / API 605 ASME B16.47 Class 900

SERIES B FLANGES

Nominal Size NPS		Outside Diameter of Flange	Thickness of Flange		Length thru Hub	Diameter Of Hub At Base	Diameter Of Hub At Point of Welding	Diameter Of Raised Face	Diameter of Bolt Circle	Number of Bolt Holes	Diameter of Bolt Holes	Diameter of Bolts	Fillet Radius Min
			WNF	BLIND
		O	C	C	Y	X	A	R					r1
26	in.	40.25	5.31	6.06	10.19	29.25	26	30	35.5	20	2.62	2 ½	0.44
	mm	1022.4	134.9	153.9	258.8	743	660.4	762	901.7		66.5	63.5	11.2
28	in.	43.5	5.81	6.56	10.88	31.38	28	32.25	38.25	20	2.88	2 ¾	0.5
	mm	1104.9	147.6	166.6	276.4	797.1	711.2	819.2	971.6		73.2	69.9	12.7
30	in.	46.5	6.12	6.93	11.38	33.5	30	34.5	40.75	20	3.12	3	0.5
	mm	1181.1	155.4	176	289.1	850.9	762	876.3	1035.1		79.2	76.2	12.7
32	in.	48.75	6.31	7.31	11.94	35.75	32	36.5	43	20	3.12	3	0.5
	mm	1238.3	160.3	185.7	303.3	908.1	812.8	927.1	1092.2		79.2	76.2	12.7
34	in.	51.75	6.75	7.68	12.56	37.88	34	39	45.5	20	3.38	3 ¼	0.56
	mm	1314.5	171.5	195.1	319	962.2	863.6	990.6	1155.7		85.9	82.6	14.2
36	in.	53	6.81	7.94	12.81	40	36	40.5	47.25	24	3.12	3	0.56
	mm	1346.2	17W	201.7	325.4	1016	914.4	1028.7	1200.2		79.2	76.2	14.2
38	in.
	mm
40	in.
	mm
42	in.
	mm
44	in.
	mm
46	in.
	mm
48	in.		Sizes 38″ thru 60″ are identical to Series A, Class 900 Flanges
	mm
50	in.
	mm
52	in.
	mm
54	in.
	mm
56	in.
	mm
58	in.
	mm
60	in.
	mm

 

(1) Bore diameter to be specified by the purchaser.

(2) When this flanges are require with flat face, either the full thickness or thickness with raised face removed may be furnished. Users are reminded that removing the raised face will make the length through hub nonstandard.