NPS	OD	D	B (WNF)	B (BLF)	H	A
26	660.4	890	111.2 117.55	111.2 117.55	181 187.35	698
28	711.2	950	115.9 122.25	115.9 122.25	190 196.35	752
30	762	1020	125.5 131.85	127 133.35	205 211.35	806
32	812.8	1085	130.2 136.55	134.9 141.25	216 222.35	860
34	863.6	1160	141.3 147.65	144.2 150.55	233 239.35	914
36	914.4	1215	146.1 152.45	150.9 157.25	243 249.35	968
38	965.2	1270	152.4 158.75	155 161.35	254 260.35	1022
40	1016	1320	158.8 165.15	162 168.35	264 270.35	1073
42	1066.8	1405	168.3 174.65	171.5 177.85	279 285.35	1127
44	1117.6	1455	173.1 179.45	177.8 184.15	289 295.35	1181
46	1168.4	1510	179.4 185.75	185.8 192.15	300 306.35	1235
48	1219.2	1595	189 195.35	195.3 201.65	316 322.35	1289
50	1270.2	1670	196.9 203.25	203.2 209.55	329 335.35	1343
52	1320.8	1720	203.2 209.55	209.6 215.95	337 343.35	1394
54	1371.6	1780	209.6 215.95	217.5 223.85	349 355.35	1448
56	1422.4	1855	217.4 223.75	225.5 231.85	362 368.35	1502
58	1473.2	1905	222.3 228.65	231.8 238.15	370 376.35	1553
60	1524	1995	233.4 239.75	242.9 249.25	389 395.35	1610

NPS	G	K	L	No of Bolts	Stud Bolt Dia x L
26	727	806.4	44.5	28	1.5/8	337
28	784	863.6	47.6	28	1.3/4	349
30	841	927.1	50.8	28	1.7/8	375
32	895	984.2	54	28	2	394
34	953	1054.1	60.3	24	2.1/4	425
36	1010	1104.9	60.3	28	2.1/4	438
38	1054	1162	60.3	28	2.1/4	451
40	1111	1212.8	60.3	32	2.1/4	464
42	1168	1282.7	66.7	28	2.1/2	495
44	1226	1333.5	66.7	32	2.1/2	508
46	1276	1390.6	66.7	32	2.1/2	521
48	1334	1460.5	73	32	2.3/4	552
50	1384	1524	79.4	28	3	578
52	1435	1574.8	79.4	32	3	591
54	1492	1632	79.4	32	3	603
56	1543	1695.4	85.7	32	3.1/4	635
58	1600	1746.2	85.7	32	3.1/4	641
60	1657	1822.4	92.1	28	3.1/2	679

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).