SERIES B

ASME B16.47 Class 75 Series B Welding Neck Flanges

SPECIFICATIONS

▪ All dimensions are in inches

▪ These flanges will be supplied with a 1/16" raised face
  unless otherwise specified

▪ Flat face option available

Nominal Pipe Size	Outside Diameter	Minimum Thickness	Raised Face Diameter	Length Thru Hub	Hub Diameter	Minimum Fillet Radius	Top of Hub	Bore	Approximate Weight	Bolt Circle	Number of Holes	Diameter of Holes
	(O)	(T)	(R)	(Y)	(X)	(r)	(A)	(B)	(lbs)	(C)
26	30.00	1.31	27.75	2.31	26.62	0.31	26.06	Specified by purchaser	80	28.50	36	0.75
28	32.00	1.31	29.75	2.44	28.62	0.31	28.06	Specified by purchaser	85	30.50	40	0.75
30	34.00	1.31	31.75	2.56	30.62	0.31	30.06	Specified by purchaser	90	32.50	44	0.75
32	36.00	1.38	33.75	2.75	32.62	0.31	32.06	Specified by purchaser	105	34.50	48	0.75
34	38.00	1.38	35.75	2.88	34.62	0.31	34.06	Specified by purchaser	110	36.50	52	0.75
36	40.69	1.44	38.00	3.38	36.81	0.38	36.06	Specified by purchaser	145	39.06	40	0.88
38	42.69	1.50	40.00	3.50	38.81	0.38	38.06	Specified by purchaser	160	41.06	40	0.88
40	44.69	1.50	42.00	3.62	40.81	0.38	40.06	Specified by purchaser	170	43.06	44	0.88
42	46.69	1.56	44.00	3.75	42.81	0.38	42.06	Specified by purchaser	185	45.06	48	0.88
44	49.25	1.69	46.25	4.12	44.88	0.38	44.06	Specified by purchaser	230	47.38	36	1.00
46	51.25	1.75	48.25	4.25	46.88	0.38	46.06	Specified by purchaser	245	49.38	40	1.00
48	53.25	1.81	50.25	4.38	48.88	0.38	48.06	Specified by purchaser	270	51.38	44	1.00
50	55.25	1.88	52.25	4.56	50.94	0.38	50.06	Specified by purchaser	290	53.38	44	1.00
52	57.38	1.88	54.25	4.75	52.94	0.38	52.06	Specified by purchaser	310	55.50	48	1.00
54	59.38	1.94	56.25	4.94	55.00	0.38	54.06	Specified by purchaser	340	57.50	48	1.00
56	62.00	2.00	58.50	5.31	57.12	0.44	56.06	Specified by purchaser	400	59.88	40	1.12
58	64.00	2.06	60.50	5.44	59.12	0.44	58.06	Specified by purchaser	430	61.88	44	1.12
60	66.00	2.19	62.50	5.69	61.12	0.44	60.06	Specified by purchaser	475	63.88	44	1.12

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