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ASME B16.47 Series A
Class 150 Weld Neck

ASME B16.47 Series A Class 150 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	Diameter of Bolt
26	34.25	2.63	29.50	26.62	4.69	0.38	26.00	Specified by purchaser	31.75	24	1-3/8	1-1/4
28	36.50	2.75	31.50	28.62	4.88	0.44	28.00	Specified by purchaser	34.00	28	1-3/8	1-1/4
30	38.75	2.88	33.75	30.75	5.32	0.44	30.00	Specified by purchaser	36.00	28	1-3/8	1-1/4
32	41.75	3.13	36.00	32.75	5.63	0.44	32.00	Specified by purchaser	38.50	28	1-5/8	1-1/2
34	43.75	3.19	38.00	34.75	5.82	0.50	34.00	Specified by purchaser	40.50	32	1-5/8	1-1/2
36	46.00	3.50	40.25	36.75	6.13	0.50	36.00	Specified by purchaser	42.75	32	1-5/8	1-1/2
38	48.75	3.38	42.25	39.00	6.13	0.50	38.00	Specified by purchaser	45.25	32	1-5/8	1-1/2
40	50.75	3.50	44.25	41.00	6.38	0.50	40.00	Specified by purchaser	47.25	36	1-5/8	1-1/2
42	53.00	3.75	47.00	43.00	6.69	0.50	42.00	Specified by purchaser	49.50	36	1-5/8	1-1/2
44	55.25	3.94	49.00	45.00	6.94	0.50	44.00	Specified by purchaser	51.75	40	1-5/8	1-1/2
46	57.25	4.00	51.00	47.12	7.25	0.50	46.00	Specified by purchaser	53.75	40	1-5/8	1-1/2
48	59.50	4.19	53.50	49.12	7.50	0.50	48.00	Specified by purchaser	56.00	44	1-5/8	1-1/2
50	61.75	4.32	55.50	51.25	7.94	0.50	50.00	Specified by purchaser	58.25	44	1-7/8	1-3/4
52	64.00	4.50	57.50	53.25	8.19	0.50	52.00	Specified by purchaser	60.50	44	1-7/8	1-3/4
54	66.25	4.69	59.50	55.25	8.44	0.50	54.00	Specified by purchaser	62.75	44	1-7/8	1-3/4
56	68.75	4.82	62.00	57.38	8.94	0.50	56.00	Specified by purchaser	65.00	48	1-7/8	1-3/4
58	71.00	5.00	64.00	59.38	9.19	0.50	58.00	Specified by purchaser	67.25	48	1-7/8	1-3/4
60	73.00	5.13	66.00	61.38	9.38	0.50	60.00	Specified by purchaser	69.25	52	1-7/8	1-3/4

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	870	66.8	749	676	119	10	660.4	Specified by purchaser	806.4	24	1-3/8	1-1/4
28	927	69.8	800	727	124	11	711.2	Specified by purchaser	863.6	28	1-3/8	1-1/4
30	984	73.2	857	781	135	11	762.0	Specified by purchaser	914.4	28	1-3/8	1-1/4
32	1060	79.5	914	832	143	11	812.8	Specified by purchaser	977.9	28	1-5/8	1-1/2
34	1111	81.0	965	883	148	13	863.6	Specified by purchaser	1028.7	32	1-5/8	1-1/2
36	1168	88.9	1022	933	156	13	914.4	Specified by purchaser	1085.8	32	1-5/8	1-1/2
38	1238	85.9	1073	991	156	13	965.2	Specified by purchaser	1149.4	32	1-5/8	1-1/2
40	1289	88.9	1124	1041	162	13	1016.0	Specified by purchaser	1200.2	36	1-5/8	1-1/2
42	1346	95.2	1194	1092	170	13	1066.8	Specified by purchaser	1257.3	36	1-5/8	1-1/2
44	1403	100.1	1245	1143	176	13	1117.6	Specified by purchaser	1314.4	40	1-5/8	1-1/2
46	1454	101.6	1295	1197	184	13	1168.4	Specified by purchaser	1365.2	40	1-5/8	1-1/2
48	1511	106.4	1359	1248	191	13	1219.2	Specified by purchaser	1422.4	44	1-5/8	1-1/2
50	1568	109.7	1410	1302	202	13	1270.0	Specified by purchaser	1479.6	44	1-7/8	1-3/4
52	1626	114.3	1461	1353	208	13	1320.8	Specified by purchaser	1536.7	44	1-7/8	1-3/4
54	1683	119.1	1511	1403	214	13	1371.6	Specified by purchaser	1593.8	44	1-7/8	1-3/4
56	1746	122.4	1575	1457	227	13	1422.4	Specified by purchaser	1651.0	48	1-7/8	1-3/4
58	1803	127.0	1626	1508	233	13	1473.2	Specified by purchaser	1708.2	48	1-7/8	1-3/4
60	1854	130.3	1676	1559	238	13	1524.0	Specified by purchaser	1759.0	52	1-7/8	1-3/4

Dimensions are based on ASME B16.47 Series A Class 150 flange requirements. Refer to the applicable standard for complete dimensional requirements.

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