About Us FAQ's Blog Certifications Downloads

estimation@ferrobend.com +91-8369719424

ASME B16.47 Series A
Class 300 Weld Neck

ASME B16.47 Series A Class 300 Weld Neck Flange Technical Drawing

DIMENSIONAL DATA

NPS	Flange OD (O)	Thickness (T)	Raised Face Diameter (R)	Hub Diameter (X)	Hub Length (Y)	Point Fillet Radius (r)	Top of Hub (A)	Bore (B)	Bolt Circle Dia.	No. of Holes	Diameter of Bolt Hole	Hole Dia.
26	38.25	3.07	29.50	28.38	7.19	0.38	26.00	Specified by purchaser	34.50	28	1-3/4	1-5/8
28	40.75	3.32	31.50	30.50	7.69	0.44	28.00	Specified by purchaser	37.00	28	1-3/4	1-5/8
30	43.00	3.57	33.75	32.56	8.19	0.44	30.00	Specified by purchaser	39.25	28	1-7/8	1-3/4
32	45.25	3.82	36.00	34.69	8.69	0.44	32.00	Specified by purchaser	41.50	28	2	1-7/8
34	47.50	3.94	38.00	36.88	9.07	0.50	34.00	Specified by purchaser	43.50	28	2	1-7/8
36	50.00	4.07	40.25	39.00	9.44	0.50	36.00	Specified by purchaser	46.00	32	2-1/8	2
38	46.00	4.19	40.50	39.12	7.06	0.50	38.00	Specified by purchaser	43.00	32	1-5/8	1-1/2
40	48.75	4.44	42.75	41.25	7.56	0.50	40.00	Specified by purchaser	45.50	32	1-3/4	1-5/8
42	50.75	4.63	44.75	43.25	7.82	0.50	42.00	Specified by purchaser	47.50	32	1-3/4	1-5/8
44	53.25	4.82	47.00	45.25	8.06	0.50	44.00	Specified by purchaser	49.75	32	1-7/8	1-3/4
46	55.75	5.00	49.00	47.38	8.44	0.50	46.00	Specified by purchaser	52.00	28	2	1-7/8
48	57.75	5.19	51.25	49.38	8.75	0.50	48.00	Specified by purchaser	54.00	32	2	1-7/8
50	60.25	5.44	53.50	51.38	9.07	0.50	50.00	Specified by purchaser	56.25	32	2-1/8	2
52	62.25	5.63	55.50	53.38	9.32	0.50	52.00	Specified by purchaser	58.25	32	2-1/8	2
54	65.25	5.94	57.75	55.50	9.88	0.50	54.00	Specified by purchaser	61.00	28	2-3/8	2-1/4
56	67.25	6.00	59.75	57.62	10.19	0.50	56.00	Specified by purchaser	63.00	28	2-3/8	2-1/4
58	69.25	6.19	62.00	59.62	10.44	0.50	58.00	Specified by purchaser	65.00	32	2-3/8	2-1/4
60	71.25	6.38	64.00	61.62	10.69	0.50	60.00	Specified by purchaser	67.00	32	2-3/8	2-1/4

NPS	Flange OD (O)	Thickness (T)	Raised Face Diameter (R)	Hub Diameter (X)	Hub Length (Y)	Point Fillet Radius (r)	Top of Hub (A)	Bore (B)	Bolt Circle Dia.	No. of Holes	Diameter of Bolt Hole (Inch)	Diameter of Bolt (Inch)
26	972	78	749	721	183	10	660.4	Specified by purchaser	876.3	28	1-3/4	1-5/8
28	1035	84.3	800	775	195	11	711.2	Specified by purchaser	939.8	28	1-3/4	1-5/8
30	1092	90.7	857	827	208	11	762.0	Specified by purchaser	997.0	28	1-7/8	1-3/4
32	1149	97.0	914	881	221	11	812.8	Specified by purchaser	1054.1	28	2	1-7/8
34	1206	100.1	965	937	230	13	863.6	Specified by purchaser	1104.9	28	2	1-7/8
36	1270	103.4	1022	991	240	13	914.4	Specified by purchaser	1168.4	32	2-1/8	2
38	1168	106.4	1029	994	179	13	965.2	Specified by purchaser	1092.2	32	1-5/8	1-1/2
40	1238	112.8	1086	1048	192	13	1016.0	Specified by purchaser	1155.7	32	1-3/4	1-5/8
42	1289	117.6	1137	1099	199	13	1066.8	Specified by purchaser	1206.5	32	1-3/4	1-5/8
44	1353	122.4	1194	1149	205	13	1117.6	Specified by purchaser	1263.6	32	1-7/8	1-3/4
46	1416	127.0	1245	1203	214	13	1168.4	Specified by purchaser	1320.8	28	2	1-7/8
48	1467	131.8	1302	1254	222	13	1219.2	Specified by purchaser	1371.6	32	2	1-7/8
50	1530	138.2	1359	1305	230	13	1270.0	Specified by purchaser	1428.8	32	2	2
52	1581	143.0	1410	1356	237	13	1320.8	Specified by purchaser	1479.6	32	2-1/8	2
54	1657	150.9	1467	1410	251	13	1371.6	Specified by purchaser	1549.4	28	2-3/8	2-1/4
56	1708	152.4	1518	1464	259	13	1422.4	Specified by purchaser	1600.2	28	2-3/8	2-1/4
58	1759	157.2	1575	1514	265	13	1473.2	Specified by purchaser	1651.0	32	2-3/8	2-1/4
60	1810	160.1	1626	1565	272	13	1524.0	Specified by purchaser	1701.8	32	2-3/8	2-1/4

Dimensions are based on ASME B16.47 Series A Class 300 flange requirements. Refer to the applicable standard for complete dimensional requirements.

Need ASME B16.47 Series A Class 300 Weld Neck Flanges for Your Project?

Precision Engineering. Technical Expertise. Global Supply.

Request a Quote Download U.S. Customary Datasheet Download Metric Datasheet