ASME B16.47 Class 400 Series B Welding Neck Flanges Bolt Circle 30.75-42 in

All dimensions are in inches. 1/4" raised face will be added to the thickness and overall length unless otherwise specified. 38" thru 60" sizes are the same as Series "A". Flat face option available. Extra heavy option available.

Product Details

All dimensions are in inches.
1/4" raised face will be added to the thickness and overall length unless otherwise specified.
38" thru 60" sizes are the same as Series "A".
Flat face option available.
Extra heavy option available.

3.1.4.jpg

ASME B16.47 Class 400 Series B Welding Neck Flanges
Nominal Pipe Size	Outside Diameter (O)	Minimum Thickness (T)	Raised Face Diameter (R)	Length Thru Hub (Y)	Hub Diameter (X)	Minimum Fillet Radius (r)	Top of Hub (A)	Bore (B)	Approximate Weight (lbs)	Bolt Circle (C)	Number of Holes	Diameter of Holes
26	33.5	3.5	28	5.88	27.12	0.44	26	Specified by purchaser	360	30.75	28	1.5
28	36	3.75	30	6.25	29.12	0.5	28	Specified by purchaser	450	33	24	1.62
30	38.25	4	32.25	6.69	31.25	0.5	30	Specified by purchaser	530	35.25	28	1.62
32	40.75	4.25	34.38	7.06	33.25	0.5	32	Specified by purchaser	635	37.5	28	1.75
34	42.75	4.38	36.5	7.38	35.38	0.56	34	Specified by purchaser	690	39.5	32	1.75
36	45.5	4.69	38.62	7.88	37.5	0.56	36	Specified by purchaser	855	42	28	1.88

Previous: ASME B16.47 Class 300 Series B Welding Neck Flanges Top Of Hub 26.19-60.31 In

Next: ASME B16.47 Class 600 Series B Welding Neck Flanges Bolt Circle 30.75-42 in