ASME B16.47 Series A Flanges, ASME B16.47 Class 150 Flanges Manufacturers

ASME B16.47 Flanges

ASME B16.47 Series B weld neck Flange, ASME B16.47 slip on Flanges Supplier, ANSI B16.47 Threaded Flanges, ASME B16.47 Series A Blind Flange, ASME B16.47 Socket Weld Flanges, ASME B16.47 Spectacle blind Flanges Manufacturer in India.

ASME B16.47 is a standard that specifies the requirements for large diameter steel flanges, typically in sizes NPS 26 through NPS 60. The standard includes two different classes of flanges: Class 150 and Class 300.

The Class 150 flanges are designed to withstand a maximum pressure of 285 psi at temperatures up to 1000°F, while the Class 300 flanges can withstand a maximum pressure of 740 psi at the same temperature range.

These flanges are typically used in high-pressure, high-temperature applications such as in the oil and gas industry, chemical processing, and power generation plants.

ASME B16.47 specifies the dimensions, tolerances, materials, marking, and testing requirements for these flanges. The standard also includes provisions for flange facings, gaskets, bolts, and nuts, which are important considerations in ensuring a proper seal and connection between the flanges.

ASME B16.47 Series A Flanges, ASME B16.47 Class 150 Flanges Manufacturers

Specifications Dimensions Weight Chart Bore Chart Tolerance Chart Applications

Suppliers of ASME B16.47 Series A Welding Neck Flange, Lap joint Flanges, ASME B16.47 Series B Class 300 Flanges, Check Sizes And Dimensions Of ASME B16.47 Series B Forged Flanges, Ready Stock of ASME B16.47 Socket Weld Flange, ANSI B16.47 Series A Class 150 Flanges.

ASME B16.47 Flange Specifications

Size Range

1/2" (15 NB) to 48" (1200NB) DN10~DN5000

Class / Pressure Rating

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Standards / Dimensions

ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, BS, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605

Connection Type

Ring Joint Flange (RTJ), Flat Face Flange (FF), Raised Face Flange (RF), Male and Female Flange (M & F), Lap Joint Flange, Large and Small Tongue-and-Groove Flange (T & G)

Find the largest ready stock of ASME B16.47 Series A Flanges, ASME B16.47 Slip On Flanges Dealer, ASME B16.47 Series A Flange Price List, Check Availability of B16.47 Threaded Flanges, ASME B16.47 Reducing Flanges Stockist, ASME B16.47 Series B BLRF Flanges Supplier, ASME B16.47 Forged Flanges in Mumbai, India.

ASME B16.47 Flanges Dimensions

Series A Flanges Dimensions	Series B Flanges Dimensions
ASME B16.47 Series A Flanges Class 150	ASME B16.47 Series B Flanges Class 75
ASME B16.47 Series A Flanges Class 300	ASME B16.47 Series B Flanges Class 150
ASME B16.47 Series A Flanges Class 400	ASME B16.47 Series B Flanges Class 300
ASME B16.47 Series A Flanges Class 600	ASME B16.47 Series B Flanges Class 400
ASME B16.47 Series A Flanges Class 900	ASME B16.47 Series B Flanges Class 600
	ASME B16.47 Series B Flanges Class 900

ASME B16.47 SERIES A FLANGES CLASS 150 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series A 150# Welding Neck Flange with RF

ASME B16.47 Series A Class 150 Blind Flange with RF

NPS	D	K	G	X
26″	870	806.4	749	676
28″	925	863.6	800	727
30″	985	914.4	857	781
32″	1060	977.9	914	832
34″	1110	1028.7	965	883
36″	1170	1085.8	1022	933
38″	1240	1149.4	1073	991
40″	1290	1200.2	1124	1041
42″	1345	1257.3	1194	1092
44″	1405	1314.4	1245	1143
46″	1455	1365.2	1295	1197
48″	1510	1422.4	1359	1248
50″	1570	1479.6	1410	1302
52″	1625	1536.7	1461	1353
54″	1685	1593.8	1511	1403
56″	1745	1651.0	1575	1457
58″	1805	1708.2	1626	1508
60″	1855	1759.0	1676	1559

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: diameter of raised face.
X: diameter of hub of flange.

NPS	A	TBL	TWN	Y
26″	660.4	66.7	66.7	119
28″	711.2	69.9	69.9	124
30″	762.0	73.1	73.1	135
32″	812.8	79.4	79.4	143
34″	863.6	81.0	81.0	148
36″	914.4	88.9	88.9	156
38″	965.2	85.8	85.8	156
40″	1016.0	88.9	88.9	162
42″	1066.8	95.3	95.3	170
44″	1117.6	100.1	100.1	176
46″	1168.4	101.6	101.6	184
48″	1219.2	106.4	106.4	191
50″	1270.0	109.6	109.6	202
52″	1320.8	114.3	114.3	208
54″	1371.6	119.1	119.1	214
56″	1422.4	122.3	122.3	227
58″	1473.2	127.0	127.0	233
60″	1524.0	130.2	130.2	238

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 2mm height of RF for Class 150 Series A flange.

NPS	n	d	l	r
26″	24	1-3/8	1-1/4	10
28″	28	1-3/8	1-1/4	11
30″	28	1-3/8	1-1/4	11
32″	28	1-5/8	1-1/2	11
34″	32	1-5/8	1-1/2	13
36″	32	1-5/8	1-1/2	13
38″	32	1-5/8	1-1/2	13
40″	36	1-5/8	1-1/2	13
42″	36	1-5/8	1-1/2	13
44″	40	1-5/8	1-1/2	13
46″	40	1-5/8	1-1/2	13
48″	44	1-5/8	1-1/2	13
50″	44	1-7/8	1-3/4	13
52″	44	1-7/8	1-3/4	13
54″	44	1-7/8	1-3/4	13
56″	48	1-7/8	1-3/4	13
58″	48	1-7/8	1-3/4	13
60″	52	1-7/8	1-3/4	13

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES A FLANGES CLASS 300 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series A 300# Welding Neck Flange with RF

ASME B16.47 Series A Class 300 Blind Flange with RF

NPS	D	K	G	X
26″	970	876.3	749	721
28″	1035	939.8	800	775
30″	1090	997.0	857	827
32″	1150	1054.1	914	881
34″	1205	1104.9	965	937
36″	1270	1168.4	1022	991
38″	1170	1092.2	1029	994
40″	1240	1155.7	1086	1048
42″	1290	1206.5	1137	1099
44″	1355	1263.6	1194	1149
46″	1415	1320.8	1245	1203
48″	1465	1371.6	1302	1254
50″	1530	1428.8	1359	1305
52″	1580	1479.6	1410	1356
54″	1660	1549.4	1467	1410
56″	1710	1600.2	1518	1464
58″	1760	1651.0	1575	1514
60″	1810	1701.8	1626	1565

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: diameter of raised face.
X: diameter of hub of flange.

NPS	A	TBL	TWN	Y
26″	660.4	66.7	66.7	119
28″	711.2	69.9	69.9	124
30″	762.0	73.1	73.1	135
32″	812.8	79.4	79.4	143
34″	863.6	81.0	81.0	148
36″	914.4	88.9	88.9	156
38″	965.2	85.8	85.8	156
40″	1016.0	88.9	88.9	162
42″	1066.8	95.3	95.3	170
44″	1117.6	100.1	100.1	176
46″	1168.4	101.6	101.6	184
48″	1219.2	106.4	106.4	191
50″	1270.0	109.6	109.6	202
52″	1320.8	114.3	114.3	208
54″	1371.6	119.1	119.1	214
56″	1422.4	122.3	122.3	227
58″	1473.2	127.0	127.0	233
60″	1524.0	130.2	130.2	238

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: diameter of raised face.
X: diameter of hub of flange.

NPS	A	TBL	TWN	Y
26″	660.4	82.6	77.8	183
28″	711.2	88.9	84.2	195
30″	762.0	93.7	90.5	208
32″	812.8	98.5	96.9	221
34″	863.6	103.2	100.1	230
36″	914.4	109.6	103.2	240
38″	965.2	106.4	106.4	179
40″	1016.0	112.8	112.8	192
42″	1066.8	117.5	117.5	198
44″	1117.6	122.3	122.3	205
46″	1168.4	127.0	127.0	214
48″	1219.2	131.8	131.8	222
50″	1270.0	138.2	138.2	230
52″	1320.8	142.9	142.9	237
54″	1371.6	150.9	150.9	251
56″	1422.4	152.4	152.4	259
58″	1473.2	157.2	157.2	265
60″	1524.0	162.0	162.0	271

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 2mm height of RF for Class 300 Series A flange.

NPS	n	d	l	r
26″	28	1-3/4	1-5/8	10
28″	28	1-3/4	1-5/8	11
30″	28	1-7/8	1-3/4	11
32″	28	2	1-7/8	11
34″	28	2	1-7/8	13
36″	32	2-1/8	2	13
38″	32	1-5/8	1-1/2	13
40″	32	1-3/4	1-5/8	13
42″	32	1-3/4	1-5/8	13
44″	32	1-7/8	1-3/4	13
46″	28	2	1-7/8	13
48″	32	2	1-7/8	13
50″	32	2-1/8	2	13
52″	32	2-1/8	2	13
54″	28	2-3/8	2-1/4	13
56″	28	2-3/8	2-1/4	13
58″	32	2-3/8	2-1/4	13
60″	32	2-3/8	2-1/4	13

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES A FLANGES CLASS 400 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series A 400# Welding Neck Flange with RF

ASME B16.47 Series A Class 400 Blind Flange with RF

NPS	D	K	G	X
26″	970	876.3	749	727
28″	1035	939.8	800	783
30″	1090	997.0	857	837
32″	1150	1054.1	914	889
34″	1205	1104.9	965	945
36″	1270	1168.4	1022	1000
38″	1205	1117.6	1035	1003
40″	1270	1174.6	1092	1054
42″	1320	1225.6	1143	1108
44″	1385	1282.7	1200	1159
46″	1440	1339.8	1257	1213
48″	1510	1403.4	1308	1267
50″	1570	1460.5	1362	1321
52″	1620	1511.3	1413	1372
54″	1700	1581.2	1470	1426
56″	1755	1632.0	1527	1480
58″	1805	1682.8	1578	1530
60″	1885	1752.6	1635	1584

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: diameter of raised face.
X: diameter of hub of flange.

NPS	A	TBL	TWN	Y
26″	660.4	98.5	88.9	194
28″	711.2	104.8	95.3	206
30″	762.0	111.2	101.6	219
32″	812.8	115.9	108.0	232
34″	863.6	122.3	111.2	241
36″	914.4	128.6	114.3	251
38″	965.2	123.9	123.9	206
40″	1016.0	130.2	130.2	216
42″	1066.8	133.4	133.4	224
44″	1117.6	139.7	139.7	233
46″	1168.4	146.1	146.1	244
48″	1219.2	152.4	152.4	257
50″	1270.0	158.8	157.2	268
52″	1320.8	163.6	162.0	276
54″	1371.6	171.5	169.9	289
56″	1422.4	176.3	174.7	298
58″	1473.2	181.0	177.8	306
60″	1524.0	189.0	185.8	319

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 7mm height of RF for Class 400 Series A flange.

NPS	n	d	l	r
26″	28	1-7/8	1-3/4	11
28″	28	2	1-7/8	13
30″	28	2-1/8	2	13
32″	28	2-1/8	2	13
34″	28	2-1/8	2	14
36″	32	2-1/8	2	14
38″	32	1-7/8	1-3/4	14
40″	32	2	1-7/8	14
42″	32	2	1-7/8	14
44″	32	2-1/8	2	14
46″	36	2-1/8	2	14
48″	28	2-3/8	2-1/4	14
50″	32	2-3/8	2-1/4	14
52″	32	2-3/8	2-1/4	14
54″	28	2-5/8	2-1/2	14
56″	32	2-5/8	2-1/2	14
58″	32	2-5/8	2-1/2	14
60″	32	2-7/8	2-3/4	14

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES A FLANGES CLASS 600 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series A 600# Welding Neck Flange with RF

ASME B16.47 Series A Class 600 Blind Flange with RF

NPS	D	K	G	X
26″	1015	914.4	749	748
28″	1075	965.2	800	803
30″	1130	1022.4	857	862
32″	1195	1079.5	914	918
34″	1245	1130.3	965	973
36″	1315	1193.8	1022	1032
38″	1270	1162.0	1054	1022
40″	1320	1212.8	1111	1073
42″	1405	1282.7	1168	1127
44″	1455	1333.5	1226	1181
46″	1510	1390.6	1276	1235
48″	1595	1460.5	1334	1289
50″	1670	1524.0	1384	1343
52″	1720	1574.8	1435	1394
54″	1780	1632.0	1492	1448
56″	1855	1695.4	1543	1502
58″	1905	1746.2	1600	1553
60″	1995	1822.4	1657	1610

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: diameter of raised face.
X: diameter of hub of flange.

NPS	A	TBL	TWN	Y
26″	660.4	125.5	108.0	222
28″	711.2	131.8	111.2	235
30″	762.0	139.7	114.3	248
32″	812.8	147.7	117.5	260
34″	863.6	154.0	120.7	270
36″	914.4	162.0	123.9	283
38″	965.2	155.0	152.4	254
40″	1016.0	162.0	158.8	264
42″	1066.8	171.5	168.3	279
44″	1117.6	177.8	173.1	289
46″	1168.4	185.8	179.4	300
48″	1219.2	195.3	189.0	316
50″	1270.0	203.2	195.9	329
52″	1320.8	209.6	203.2	337
54″	1371.6	217.5	209.6	349
56″	1422.4	225.5	217.5	362
58″	1473.2	231.8	222.3	370
60″	1524.0	242.9	233.4	389

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 7mm height of RF for Class 600 Series A flange.

NPS	n	d	l	r
26″	28	2	1-7/8	13
28″	28	2-1/8	2	13
30″	28	2-1/8	2	13
32″	28	2-3/8	2-1/4	13
34″	28	2-3/8	2-1/4	14
36″	28	2-5/8	2-1/2	14
38″	28	2-3/8	2-1/4	14
40″	32	2-3/8	2-1/4	14
42″	28	2-5/8	2-1/2	14
44″	32	2-5/8	2-1/2	14
46″	32	2-5/8	2-1/2	14
48″	32	2-7/8	2-3/4	14
50″	28	3-1/8	3	14
52″	32	3-1/8	3	14
54″	32	3-1/8	3	14
56″	32	3-3/8	3-1/4	16
58″	32	3-3/8	3-1/4	16
60″	28	3-5/8	3-1/2	17

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES A FLANGES CLASS 900 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series A 900# Welding Neck Flange with RF

ASME B16.47 Series A Class 900 Blind Flange with RF

NPS	D	K	G	X
26″	1085	952.5	749	775
28″	1170	1022.4	800	832
30″	1230	1085.8	857	889
32″	1315	1155.7	914	946
34″	1395	1225.6	965	1006
36″	1460	1289.0	1022	1064
38″	1460	1289.0	1099	1073
40″	1510	1339.8	1162	1127
42″	1560	1390.6	1213	1176
44″	1650	1463.7	1270	1235
46″	1735	1536.7	1334	1292
48″	1785	1587.5	1384	1343
50″	–	–	–	–
52″	–	–	–	–
54″	–	–	–	–
56″	–	–	–	–
58″	–	–	–	–
60″	–	–	–	–

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: diameter of raised face.
X: diameter of hub of flange.

NPS	A	TBL	TWN	Y
26″	660.4	160.4	139.7	286
28″	711.2	171.5	142.9	298
30″	762.0	182.6	149.3	311
32″	812.8	193.7	158.8	330
34″	863.6	204.8	165.1	349
36″	914.4	214.4	171.5	362
38″	965.2	215.9	190.5	352
40″	1016.0	223.9	196.9	364
42″	1066.8	231.8	206.4	371
44″	1117.6	242.9	214.4	391
46″	1168.4	255.6	225.5	411
48″	1219.2	263.6	233.4	419
50″	–	–	–	–
52″	–	–	–	–
54″	–	–	–	–
56″	–	–	–	–
58″	–	–	–	–
60″	–	–	–	–

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 7mm height of RF for Class 900 Series A flange.

NPS	n	d	l	r
26″	20	2-7/8	2-3/4	11
28″	20	3-1/8	3	13
30″	20	3-1/8	3	13
32″	20	3-3/8	3-1/4	13
34″	20	3-5/8	3-1/2	14
36″	20	3-5/8	3-1/2	14
38″	20	3-5/8	3-1/2	19
40″	24	3-5/8	3-1/2	21
42″	24	3-5/8	3-1/2	21
44″	24	3-7/8	3-3/4	22
46″	24	4-1/8	4	22
48″	24	4-1/8	4	24
50″	–	–	–	–
52″	–	–	–	–
54″	–	–	–	–
56″	–	–	–	–
58″	–	–	–	–
60″	–	–	–	–

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES B FLANGES CLASS 75 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series B 75# Welding Neck Flange with RF

ASME B16.47 Series B Class 75 Blind Flange with RF

NPS	D	K	G	X
26	760	723.9	705	676
28	815	774.7	756	727
30	865	825.5	806	778
32	915	876.3	857	829
34	965	927.1	908	879
36	1035	992.2	965	935
38	1085	1043.0	1016	986
40	1135	1093.8	1067	1037
42	1185	1144.6	1118	1087
44	1250	1203.3	1175	1140
46	1300	1254.1	1226	1191
48	1355	1304.9	1276	1241
50	1405	1355.7	1327	1294
52	1455	1409.7	1378	1345
54	1510	1460.5	1429	1397
56	1575	1520.8	1486	1451
58	1625	1571.6	1537	1502
60	1675	1622.4	1588	1553

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: diameter of raised face.
X: diameter of hub of WN flange.

NPS	A	TBL	TWN	Y
26	661.9	31.9	31.9	57
28	712.7	31.9	31.9	60
30	763.5	31.9	31.9	64
32	814.3	35.0	33.5	68
34	865.1	36.6	33.5	72
36	915.9	40.9	35.0	84
38	966.7	43.0	36.6	87
40	1017.5	43.0	36.6	91
42	1068.3	46.3	38.2	94
44	1119.1	47.7	41.4	103
46	1169.9	49.3	43.0	106
48	1220.7	52.5	44.6	110
50	1271.5	54.1	46.2	114
52	1322.3	55.7	46.2	119
54	1373.1	58.9	47.8	124
56	1423.9	60.4	49.3	133
58	1474.7	62.0	50.9	137
60	1525.5	65.2	54.1	143

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 2mm height of RF for Class 75 Series B flange.

NPS	n	d	l	r
26	36	3/4	5/8	8
28	40	3/4	5/8	8
30	44	3/4	5/8	8
32	48	3/4	5/8	8
34	52	3/4	5/8	8
36	40	7/8	3/4	10
38	40	7/8	3/4	10
40	44	7/8	3/4	10
42	48	7/8	3/4	10
44	36	1	7/8	10
46	40	1	7/8	10
48	44	1	7/8	10
50	44	1	7/8	10
52	48	1	7/8	10
54	48	1	7/8	10
56	40	1-1/8	1	11
58	44	1-1/8	1	11
60	44	1-1/8	1	11

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES B FLANGES CLASS 150 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series B 150# Welding Neck Flange with RF

ASME B16.47 Series B Class 150 Blind Flange with RF

NPS	D	K	G	X
26	785	744.5	711	684
28	835	795.3	762	735
30	885	846.1	813	787
32	940	900.1	864	840
34	1005	957.3	921	892
36	1055	1009.6	972	945
38	1125	1070.0	1022	997
40	1175	1120.8	1080	1049
42	1225	1171.6	1130	1102
44	1275	1222.4	1181	1153
46	1340	1284.3	1235	1205
48	1390	1335.1	1289	1257
50	1445	1385.9	1340	1308
52	1495	1436.7	1391	1360
54	1550	1492.2	1441	1413
56	1600	1543.0	1492	1465
58	1675	1611.3	1543	1516
60	1725	1662.1	1600	1570

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: outside diameter of raised face.
X: diameter of hub of WN flange.

NPS	A	TBL	TWN	Y
26	661.9	43.0	39.8	87
28	712.7	46.2	43.0	94
30	763.5	49.3	43.0	98
32	814.3	52.5	44.6	106
34	865.1	55.7	47.7	109
36	915.9	57.3	50.9	116
38	968.2	62.0	52.5	122
40	1019.0	65.2	54.1	127
42	1069.8	66.8	57.3	132
44	1120.6	70.0	58.9	135
46	1171.4	73.1	60.4	143
48	1222.2	76.3	63.6	148
50	1273.0	79.5	66.8	152
52	1323.8	82.7	68.4	156
54	1374.6	85.8	70.0	160
56	1425.4	89.0	71.6	165
58	1476.2	91.9	73.1	173
60	1527.0	95.4	74.7	178

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 2mm height of RF for Class 150 Series B flange.

NPS	n	d	l	r
26	36	7/8	3/4	10
28	40	7/8	3/4	10
30	44	7/8	3/4	10
32	48	7/8	3/4	10
34	40	1	7/8	10
36	44	1	7/8	10
38	40	1-1/8	1	10
40	44	1-1/8	1	10
42	48	1-1/8	1	11
44	52	1-1/8	1	11
46	40	1-1/4	1-1/8	11
48	44	1-1/4	1-1/8	11
50	48	1-1/4	1-1/8	11
52	52	1-1/4	1-1/8	11
54	56	1-1/4	1-1/8	11
56	60	1-1/4	1-1/8	14
58	48	1-3/8	1-1/4	14
60	52	1-3/8	1-1/4	14

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES B FLANGES CLASS 300 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series B 300# Welding Neck Flange with RF

ASME B16.47 Series B Class 300 Blind Flange with RF

NPS	D	K	G	X
26	865	803.3	737	702
28	920	857.2	787	756
30	990	920.8	845	813
32	1055	977.9	902	864
34	1110	1031.9	953	918
36	1170	1089.0	1010	965
38	1220	1139.8	1060	1016
40	1275	1190.6	1114	1067
42	1335	1244.6	1168	1118
44	1385	1295.4	1219	1173
46	1460	1365.2	1270	1229
48	1510	1416.0	1327	1278
50	1560	1466.8	1378	1330
52	1615	1517.6	1429	1383
54	1675	1578.0	1480	1435
56	1765	1651.0	1537	1494
58	1825	1712.9	1594	1548
60	1880	1763.7	1651	1599

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: outside diameter of raised face.
X: diameter of hub of WN flange.

NPS	A	TBL	TWN	Y
26	665.2	87.4	87.7	143
28	716.0	87.4	87.4	148
30	768.4	92.1	92.1	156
32	819.2	101.6	101.6	167
34	870.0	101.6	101.6	171
36	920.8	101.6	101.6	179
38	971.6	109.6	109.6	191
40	1022.4	114.3	114.3	197
42	1074.7	117.5	117.5	203
44	1125.5	125.5	125.5	213
46	1176.3	128.6	127.0	221
48	1227.1	133.4	127.0	222
50	1277.9	138.2	136.6	233
52	1328.7	142.6	141.3	241
54	1379.5	147.7	135.0	238
56	1430.3	155.4	152.4	267
58	1481.1	160.4	152.4	273
60	1531.9	165.1	149.3	270

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 2mm height of RF for Class 300 Series B flange.

NPS	n	d	l	r
26	32	1-3/8	1-1/4	14
28	36	1-3/8	1-1/4	14
30	36	1-1/2	1-3/8	14
32	32	1-5/8	1-1/2	16
34	36	1-5/8	1-1/2	16
36	32	1-3/4	1-5/8	16
38	36	1-3/4	1-5/8	16
40	40	1-3/4	1-5/8	16
42	36	1-7/8	1-3/4	16
44	40	1-7/8	1-3/4	16
46	36	2	1-7/8	16
48	40	2	1-7/8	16
50	44	2	1-7/8	16
52	48	2	1-7/8	16
54	48	2	1-7/8	16
56	36	2-3/8	2-1/4	17
58	40	2-3/8	2-1/4	17
60	40	2-3/8	2-1/4	17

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES B FLANGES CLASS 400 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series B 400# Welding Neck Flange with RF

ASME B16.47 Series B Class 400 Blind Flange with RF

NPS	D	K	G	X
26	850	781.0	711	689
28	915	838.2	762	740
30	970	895.4	819	794
32	1035	952.5	873	845
34	1085	1003.3	927	899
36	1155	1066.8	981	952

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: outside diameter of raised face.
X: diameter of hub of WN flange.

NPS	A	TBL	TWN	Y
26	660.4	88.9	88.9	149
28	711.2	95.3	95.3	159
30	762.0	101.6	101.6	170
32	812.8	108.0	108.0	179
34	863.6	111.2	111.2	187
36	914.4	119.1	119.1	200

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 7mm height of RF for Class 400 Series B flange.

NPS	n	d	l	r
26	28	1-1/2	1-3/8	11
28	24	1-5/8	1-1/2	13
30	28	1-5/8	1-1/2	13
32	28	1-3/4	1-5/8	13
34	32	1-3/4	1-5/8	14
36	28	1-7/8	1-3/4	14

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES B FLANGES CLASS 600 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series B 600# Welding Neck Flange with RF

ASME B16.47 Series B Class 600 Blind Flange with RF

NPS	D	K	G	X
26	890	806.4	727	698
28	950	863.6	784	752
30	1020	927.1	841	806
32	1085	984.2	895	860
34	1160	1054.1	953	914
36	1215	1104.9	1010	968

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: outside diameter of raised face.
X: diameter of hub of WN flange.

NPS	A	TBL	TWN	Y
26	660.4	111.3	111.2	181
28	711.2	115.9	115.9	190
30	762.0	127.0	125.5	205
32	812.8	134.9	130.2	216
34	863.6	144.2	141.3	233
36	914.4	150.9	146.1	243

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 7mm height of RF for Class 600 Series B flange.

NPS	n	d	l	r
26	28	1-3/4	1-5/8	13
28	28	1-7/8	1-3/4	13
30	28	2	1-7/8	13
32	28	2-1/8	2	13
34	24	2-3/8	2-1/4	14
36	28	2-3/8	2-1/4	14

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 SERIES B FLANGES CLASS 900 DIMENSIONS AND TECHNICAL DRAWINGS

ASME B16.47 Series B 900# Welding Neck Flange with RF

ASME B16.47 Series B Class 900 Blind Flange with RF

NPS	D	K	G	X
26	1020	901.7	762	743
28	1105	971.6	819	797
30	1180	1035.0	876	851
32	1240	1092.2	927	908
34	1315	1155.7	991	962
36	1345	1200.2	1029	1016

General Note:

All dimensions are in MM.
D: outside diameter of flange.
K: diameter of bolt circle.
G: outside diameter of raised face.
X: diameter of hub of WN flange.

NPS	A	TBL	TWN	Y
26	660.4	154.0	135.0	259
28	711.2	166.7	147.7	276
30	762.0	176.1	155.6	289
32	812.8	186.0	160.4	303
34	863.6	195.0	171.5	319
36	914.4	201.7	173.1	325

General Note:

All dimensions are in MM.
A: Diameter of hub top of WN.
TBL: minimum thickness of blind flange.
TWN: minimum thickness of WN flange.
Y: length through hub of WN.
t: 7mm height of RF for Class 900 Series B flange.

NPS	n	d	l	r
26	20	2-5/8	2-1/2	11
28	20	2-7/8	2-3/4	13
30	20	3-1/8	3	13
32	20	3-1/8	3	13
34	20	3-3/8	3-1/4	14
36	24	3-1/8	3	14

General Note:

n: number of bolt holes.
d: diameter of bolt hole.
l: diameter of bolt.
r: minimum fillet radius for WN.
d and l are in inch units, while r is in mm unit.

ASME B16.47 Flanges Weight Chart

Flange ASME B16.47-A (MSS SP 44)
NPS SIZE	CLASS 150		CLASS 300		CLASS 600		CLASS 900
NPS SIZE	WELDING NECK	BLIND	WELDING NECK	BLIND	WELDING NECK	BLIND	WELDING NECK	BLIND
22	109	162	204	284	310	437
26	154	321	291	477	450	777	890	1100
28	175	380	352	584	506	909	1055	1350
30	204	450	405	685	575	1074	1230	1610
32	254	560	465	793	642	1253	1480	1940
34	273	625	523	919	705	1427	1750	2310
36	321	760	580	1072	800	1665	1997	2660
38	358	830	324	900	674	1509	2000	2690
40	386	925	391	1066	725	1695	2161	2950
42	442	1080	428	1206	895	2028	2379	3280
44	491	1230	485	1378	951	2246	3321	3810
46	525	1345	559	1570	1055	2543	3224	4430
48	580	1520	597	1745	1247	2951	3500	4860
50	624	1668	674	1983	1423	3381
52	689	1867	728	2194	1493	3682
54	760	2088	871	2538	1637	4091
56	845	2308	921	2728	1843	4585
58	923	2554	968	2975	1954	4986
60	971	2765	1032	3250	2353	5750

Flange ASME B16.47-B (API 605)
NPS Size	CLASS 150		CLASS 300		CLASS 600		CLASS 900
	WELDING NECK	BLIND	WELDING NECK	BLIND	WELDING NECK	BLIND	WELDING NECK	BLIND
26	65	165	193	404	260	534
28	75	200	211	457	305	637
30	82	226	258	555	378	793
32	94	263	315	693	436	925
34	113	320	339	765	550	1150
36	128	374	380	858	591	1290
38	153	434	425	1005	668	1481
40	166	489	459	1132	718	1662
42	182	560	514	1280	888	1989
44	195	626	567	1466	942	2188
46	229	709	666	1657	1046	2458
48	248	799	687	1772	1237	2859
50	268	899	797	2029	1412	3280
52	284	985	806	2230	1481	3573
54	309	1081	840	2310	1623	3949
56	329	1181	1117	2891	1829	4423
58	391	1322	1194	3093	1939	4791
60	414	1430	1215	3213	2336	5533

ASME B16.47 Flanges Bore Chart

Pipe Size	O.D. in inches	5	10	20	30	40	STD	60	80	XH	100	120	140	160	XXH
1/2	0.840	.065 .710	.083 .674			.109 .622	.109 .622		.147 .546	.147 .546				.187 .466	.294 .252
3/4	1.050	.065 .920	.083 .884			.113 .824	.113 .824		.154 .742	.154 .742				.218 .614	.308 .434
1	1.315	.065 1.185	.109 1.097			.133 1.049	.133 1.049		.179 .957	.179 .957				.250 .815	.358 .599
1 1/4	1.660	.065 1.530	.109 1.442			.140 1.380	.140 1.380		.191 1.278	.191 1.278				.250 1.160	.382 .896
1 1/2	1.900	.065 1.770	.109 1.682			.145 1.610	.145 1.610		.200 1.500	.200 1.500				.281 1.338	.400 1.100
2	2.375	.065 2.245	.109 2.157			.154 2.067	.154 2.067		.218 1.939	.218 1.939				.343 1.687	.436 1.503
2 1/2	2.875	.083 2.709	.120 2.635			.203 2.469	.203 2.469		.276 2.323	.276 2.323				.375 2.125	.552 1.771
3	3.500	.083 3.334	.120 3.260			.216 3.068	.216 3.068		.300 2.900	.300 2.900				.437 2.626	.600 2.300
3 1/2	4	.083 3.834	.120 3.760			.226 3.548	.226 3.548		.318 3.364	.318 3.364					.636 2.728
4	4.5	.083 4.334	.120 4.260			.237 4.026	.237 4.026	.281 3.938	.337 3.826	.337 3.826		.437 3.626		.531 3.438	.674 3.152
5	5.563	.109 5.345	.134 5.295			.258 5.047	.258 5.047		.375 4.813	.375 4.813		.500 4.563		.625 4.313	.750 4.063
6	6.625	.109 6.407	.134 6.357			.280 6.065	.280 6.065		.432 5.761	.432 5.761		.562 5.501		.718 5.189	.864 4.897
8	8.625	.109 8.407	.148 8.329	.250 8.125	.277 8.071	.322 7.981	.322 7.981	.406 7.813	.500 7.625	.500 7.625	.593 7.439	.718 7.189	.812 7.001	.906 6.813	.875 6.875
10	10.75	.134 10.482	.165 10.420	.250 10.250	.307 10.136	.365 10.020	.365 10.020	.500 9.750	.593 9.562	.500 9.750	.718 9.314	.843 9.064	1.000 8.750	1.125 8.500
12	12.75	.156 12.420	.180 12.390	.250 12.250	.330 12.090	.406 11.938	.375 12.000	.562 11.626	.687 11.374	.500 11.750	.843 11.064	1.000 10.750	1.125 10.500	1.312 10.126
14	14.0		.250 13.500	.312 13.376	.375 13.250	.437 13.124	.375 13.250	.593 12.812	.750 12.500	.500 13.000	.937 12.126	1.093 11.814	1.250 11.500	1.406 11.188
16	16.0		.250 15.500	.312 15.376	.375 15.250	.500 15.000	.375 15.250	.656 14.688	.843 14.312	.500 15.000	1.031 13.938	1.218 13.564	1.437 13.126	1.593 12.814
18	18.0		.250 17.500	.312 17.376	.437 17.124	.562 16.876	.375 17.250	.750 16.500	.937 16.124	.500 17.000	1.156 15.688	1.375 15.250	1.562 14.876	1.781 14.438
20	20.0		.250 19.500	.375 19.250	.500 19.000	.593 18.812	.375 19.250	.812 18.376	1.031 17.938	.500 19.000	1.280 17.440	1.500 17.000	1.750 16.500	1.968 16.064
22	22.0		.250 21.500	.375 21.250	.500 21.000		.375 21.250	.875 20.250	1.125 19.750	.500 21.000	1.375 19.250	1.625 18.750	1.875 18.250	2.125 17.750
24	24.0		.250 23.500	.375 23.250	.562 22.876	.687 22.624	.375 23.250	.968 22.064	1.218 21.562	.500 23.000	1.531 20.938	1.812 20.376	2.062 19.876	2.343 19.314
26	26.0		.312 25.376	.500 25.000			.375 25.250			.500 25.000
28	28.0		.312 27.376	.500 27.000	.625 26.750		.375 27.250			.500 27.000
30	30.0		.312 29.376	.500 29.000	.625 28.750		.375 29.250			.500 29.000
32	32.0		.312 31.376	.500 31.000	.625 30.750	.688 30.624	.375 31.250			.500 31.000
34	34.0		.344 33.312	.500 33.000	.625 32.750	.688 32.624	.375 33.250			.500 33.000
36	36.0		.312 35.376	.500 35.000	.625 34.750	.750 34.500	.375 35.250			.500 35.000
42	42.0						.375 41.250			.500 41.000
48	48.0						.375 47.250			.500 47.000

ASME B16.47 Flange Tolerance Chart

OD		±0.12″	±3.2mm
The diameter of Flange Face	0.06″ (1.66mm) raised face	±0.08″	±2.0mm
	0.25″ (6.44mm) raised face	±0.04″
er ofThe diameter of the Hub at the Point of Welding		±0.21″, -0.06″	±5.5mm, -1.6mm
ID		±0.12″, -0.06″	±3.2mm, -1.6mm
Thk.	Up to 1.0″ Thickness	±0.12″, -0.00″	±3.2mm, -0.00mm
	1.0″ to 2.0″	±0.19″, -0.00″	±4.8mm, -0.00mm
	2.0″ to 3.0″	±0.31″, -0.00″	±7.9mm, -0.00mm
	Over 3.0′ Thickness	±0.38″, -0.00″	±9.6mm, -0.00mm
Bolts Drilling	Bolt Circle Diameter	±0.06″	±1.6mm
	Bolt Hole Spacing	±0.03″	±0.8mm
The eccentricity of the Bolt Circle and Facing vs. Bore		±0.06″	±1.6mm
Length Through Hub for Welding Neck Flanges		±0.19″	±4.8mm

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ASME B16.47 Flanges Applications

We stock in India and export to the following countries

Australia, Afghanistan, Algeria, Angola, Argentina, Armenia, Azerbaijan, Bahrain, Bangladesh, Benin,
Bhutan, Botswana, Brazil, Brunei, Burkina Faso, Cambodia, Cameroon, Canada, Central Africa Republic,
Chad, Chile, Colombia, Cuba, Cyprus, DRC, Djibouti, Egypt, Equatorial Guinea, Eritrea, Eswatini,
Ethiopia, Fiji, Finland, France, Georgia, Germany, Ghana, Greece, Hungary, Iceland, Indonesia, Iran,
Iraq, Ireland, Israel, Italy, Japan, Jordan, Kazakhstan, Kenya, Kuwait, Kyrgyzstan, Laos, Lebanon,
Lesotho, Liberia, Libya, Lithuania, Madagascar, Malawi, Malaysia, Maldives, Mali, Mexico, Morocco,
Mozambique, Mauritania, Myanmar, Namibia, Nepal, Netherlands, New Zealand, Nigeria, Norway, Oman,
Panama, Peru, Philippines, Poland, Portugal, Palestine, Qatar, Russia, Rwanda, Romania, Saudi Arabia,
Senegal, Sierra Leone, Singapore, Slovakia, Somalia, South Africa, South Korea, South Sudan, Spain,
Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Tasmania, Thailand, The Gambia,
Timor-Leste, Togo, Tunisia, Turkey, Turkiye, Turkmenistan, Uganda, Uzbekistan, United Arab Emirates (UAE),
United Kingdom (UK), United States (US), Venezuela, Vietnam, Yemen, Zambia, Zimbabwe

We stock in Mumbai and supply to the following cities

Abu Dhabi, Amsterdam, Abuja, Accra, Addis Ababa, Ahmedabad, Algiers, Amman, Ankara, Antananarivo,
Ashgabat, Asmara, Astana, Athens, Baghdad, Baku, Bamako, Bandar Seri Begawan, Bangkok, Bangui,
Banjul, Beirut, Bengaluru, Berlin, Bishkek, Bloemfontein, Bogotá, Bern, Brasília, Bratislava,
Bucharest, Budapest, Buenos Aires, Cairo, Canberra, Cape Town, Caracas, Chennai, Coimbatore, Dakar,
Damascus, Dhaka, Dili, Djibouti city, Dodoma, Doha, Dublin, Dushanbe, Freetown, Gaborone, Ghaziabad,
Guwahati, Hanoi, Harare, Havana, Helsinki, Hobart, Hyderabad, Indore, Jaipur, Jakarta, Jerusalem,
Juba, Jurong East, Kabul, Kampala, Kanpur, Kathmandu, Kigali, Kinshasa, Kochi, Kolkata, Kuala Lumpur,
Kuwait City, Lisbon, Lilongwe, Lima, Lobamba, Lomé, London, Luanda, Lucknow, Lusaka, Malabo, Madrid,
Malé, Mexico City, Manama, Moscow, Manila, Maputo, Maseru, Mbabane, Mogadishu, Monrovia, Mumabi,
Muscat, Nagpur, Nairobi, New Delhi, Niamey, Nicosia, Noida, Nouakchott, N’Djamena, Oslo, Ottawa,
Ouagadougou, Panama City, Paris, Patna, Phnom Penh, Porto-Novo, Pretoria, Pune, Rabat, Reykjavík,
Riyadh, Rome, Sana’a, Santiago, Sri Jayawardenepura Kotte, Stockholm, Seoul, Singapore, Surat,
Suva, Taipei City, Tashkent, Tokyo, Tbilisi, Tehran, Thimphu, Tripoli, Tunis, Vientiane, Vilnius,
Visakhapatnam, Warsaw, Washington D.C., Wellington, Windhoek, Yaoundé, Yerevan, Naypyidaw

ASME B16.47 Flanges Price

Omaa Metal Sources is ANSI/ASME B16.47 Flanges Exporters and Suppliers in the US, UK, South Africa, Saudi Arabia, Singapore, UAE, Oman, South Korea, Turkey, Bahrain, Malaysia, Philippines, Thailand, Norway, Indonesia, Iraq, Yemen, Bangladesh, Nigeria, Egypt, Peru, Ghana, Morocco, Etc.