NPS	OD	D	B (WNF)	B (BLF)	H	A
26	660.4	850	88.9 95.25	98.5 104.85	149 155.35	698
28	711.2	915	95.3 101.65	104.8 111.15	159 165.35	740
30	762	970	101.6 107.95	111.2 117.55	170 176.35	794
32	812.8	1035	108 114.35	115.9 122.25	179 185.35	845
34	863.6	1085	111.2 117.55	122.3 128.65	187 193.35	899
36	914.4	1155	119.1 125.45	119.1 125.45	200 206.35	952
38	965.2	1205	123.9 130.25	123.9 130.25	206 212.35	1003
40	1016	1270	130.2 136.55	130.2 136.55	216 222.35	1054
42	1066.8	1320	133.4 139.75	133.4 139.75	224 230.35	1108
44	1117.6	1385	139.7 146.05	139.7 146.05	233 239.35	1159
46	1168.4	1440	146.1 152.45	146.1 152.45	244 250.35	1213
48	1219.2	1510	152.4 158.75	152.4 158.75	257 263.35	1267
50	1270.2	1570	157.2 163.55	158.8 165.15	268 274.35	1321
52	1320.8	1620	162 168.35	163.6 169.95	276 282.35	1372
54	1371.6	1700	169.9 176.25	171.5 177.85	289 295.35	1426
56	1422.4	1755	174.7 181.05	176.3 182.65	298 304.35	1480
58	1473.2	1805	177.8 184.15	181 187.35	306 312.35	1530
60	1524	1885	185.8 192.15	189 195.35	319 325.35	1584

NPS	G	K	L	No of Bolts	Stud Bolt Dia x L
26	711	781	38.1	28	1.3/8	279
28	762	838.2	41.3	24	1.1/2	298
30	819	895.4	41.3	28	1.1/2	311
32	873	952.5	44.5	28	1.5/8	330
34	927	1003.3	44.5	32	1.5/8	337
36	981	1066.8	47.6	28	1.3/4	356
38	1035	1117.6	47.6	32	1.3/4	368
40	1092	1174.8	50.8	32	1.7/8	387
42	1143	1225.6	50.8	32	1.7/8	394
44	1200	1282.7	54	32	2	413
46	1257	1339.8	54	36	2	425
48	1308	1403.4	60.3	28	2.1/4	451
50	1362	1460.5	60.3	32	2.1/4	457
52	1413	1511.3	60.3	32	2.1/4	470
54	1470	1581.2	66.7	28	2.1/2	502
56	1527	1632	66.7	32	2.1/2	508
58	1578	1682.8	66.7	32	2.1/2	514
60	1635	1752.6	73	32	2.3/4	546

Indications..

• OD = Diameter at Weld Bevel
• D = Overall Diameter of Flange
• B (WNF) = Minimum Thickness of Welding Neck Flange
• B (BLF) = Minimum Thickness of Blind Flange
• H = Length thru Hub
• A = Diameter at Base of Hub
• G = Outside Diameter of Raised Face
• K = Bolt Circle Diameter
• L = Diameter of Bolt Holes

General notes..

• Dimensions are in millimeters unless otherwise indicated.
• For dimensions "B" and "H" click IMPORTANT.
• Blind flanges ASME B16.47 series A flanges (≥ NPS 26) are MSS SP-44 flanges.
  ASME has incorporated the MSS-SP44 specification into B16.47 Series A and the API 605 Specification into B16.47 series B.
  These specification include only Welding Neck and Blind Flanges.
• Dimensions for Classes 400, 600 and 900 NPS 38 and larger for Series B flanges are the same as for the Series A flanges.
• The length of the Stud Bolt does not include the height of the chamfers (points).