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ASME B16.47 Series A
Class 600 Weld Neck

ASME B16.47 Series A Class 600 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	40.00	4.25	29.50	29.44	8.75	0.50	26.00	Specified by purchaser	36.00	28	2	1-7/8
28	42.25	4.38	31.50	31.62	9.25	0.50	28.00	Specified by purchaser	38.00	28	2-1/8	2
30	44.50	4.50	33.75	33.94	9.75	0.50	30.00	Specified by purchaser	40.25	28	2-1/8	2
32	47.00	4.62	36.00	36.12	10.25	0.50	32.00	Specified by purchaser	42.50	28	2-3/8	2-1/4
34	49.00	4.75	38.00	38.31	10.62	0.56	34.00	Specified by purchaser	44.50	28	2-3/8	2-1/4
36	51.75	4.88	40.25	40.62	11.12	0.56	36.00	Specified by purchaser	47.00	28	2-5/8	2-1/2
38	50.00	6.00	41.50	40.25	10.00	0.56	38.00	Specified by purchaser	45.75	28	2-3/8	2-1/4
40	52.00	6.25	43.75	42.25	10.38	0.56	40.00	Specified by purchaser	47.75	32	2-3/8	2-1/4
42	55.25	6.62	46.00	44.38	11.00	0.56	42.00	Specified by purchaser	50.50	28	2-5/8	2-1/2
44	57.25	6.81	48.25	46.50	11.38	0.56	44.00	Specified by purchaser	52.50	32	2-5/8	2-1/2
46	59.50	7.06	50.25	48.62	11.81	0.56	46.00	Specified by purchaser	54.75	32	2-5/8	2-1/2
48	62.75	7.44	52.50	50.75	12.44	0.56	48.00	Specified by purchaser	57.50	32	2-7/8	2-3/4
50	65.75	7.75	54.50	52.88	12.94	0.56	50.00	Specified by purchaser	60.00	28	3-1/8	3
52	67.75	8.00	56.50	54.88	13.25	0.56	52.00	Specified by purchaser	62.00	32	3-1/8	3
54	70.00	8.25	58.75	57.00	13.75	0.56	54.00	Specified by purchaser	64.25	32	3-1/8	3
56	73.00	8.56	60.75	59.12	14.25	0.62	56.00	Specified by purchaser	66.75	32	3-3/8	3-1/4
58	75.00	8.75	63.00	61.12	14.56	0.62	58.00	Specified by purchaser	68.75	32	3-3/8	3-1/4
60	78.50	9.19	65.25	63.38	15.31	0.69	60.00	Specified by purchaser	71.75	28	3-5/8	3-1/2

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	1016	108	749	748	222	13	660.4	Specified by purchaser	914.4	28	2	1-7/8
28	1073	111.3	800	803	235	13	711.2	Specified by purchaser	965.2	28	2-1/8	2
30	1130	114.3	857	862	248	13	762.0	Specified by purchaser	1022.4	28	2-1/8	2
32	1194	117.3	914	917	260	13	812.8	Specified by purchaser	1079.5	28	2-3/8	2-1/4
34	1245	120.6	965	973	270	14	863.6	Specified by purchaser	1130.3	28	2-3/8	2-1/4
36	1314	124.0	1022	1032	282	14	914.4	Specified by purchaser	1193.8	28	2-5/8	2-1/2
38	1270	152.4	1054	1022	254	14	965.2	Specified by purchaser	1162.0	28	2-3/8	2-1/4
40	1321	158.8	1111	1073	264	14	1016.0	Specified by purchaser	1212.8	32	2-3/8	2-1/4
42	1403	168.1	1168	1127	279	14	1066.8	Specified by purchaser	1282.7	28	2-5/8	2-1/2
44	1454	173.0	1226	1181	289	14	1117.6	Specified by purchaser	1333.5	32	2-5/8	2-1/2
46	1511	179.3	1276	1235	300	14	1168.4	Specified by purchaser	1390.6	32	2-5/8	2-1/2
48	1594	189.0	1334	1289	316	14	1219.2	Specified by purchaser	1460.5	32	2-7/8	2-3/4
50	1670	196.8	1384	1343	329	14	1270.0	Specified by purchaser	1524.0	28	3-1/8	3
52	1721	203.2	1435	1394	337	14	1320.8	Specified by purchaser	1574.8	32	3-1/8	3
54	1778	209.6	1492	1448	349	14	1371.6	Specified by purchaser	1632.0	32	3-1/8	3
56	1854	217.4	1543	1502	362	16	1422.4	Specified by purchaser	1695.4	32	3-3/8	3-1/4
58	1905	222.2	1600	1553	370	16	1473.2	Specified by purchaser	1746.2	32	3-3/8	3-1/4
60	1994	233.4	1657	1610	389	17	1524.0	Specified by purchaser	1822.4	28	3-5/8	3-1/2

Dimensions are based on ASME B16.47 Series A Class 600 flange requirements. Refer to the applicable standard for complete dimensional requirements.

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