ASME B16.47FlangesTG-DS-085 · Rev. 0 · October 2026

ASME B16.47 Large Diameter Plate & Blind Flange Dimensions

This chart gives ASME B16.47 Series A and Series B large-diameter plate and blind flange dimensions in millimetres for 650 to 1500 NB (NPS 26 to 60), Class 150 and 300 — outside diameter, bore, plate and blind thickness, bolt circle, holes and raised face. Above NPS 60, large-diameter flanges are made to drawing.

Plate flanges are Teshi Group's core product: cut, machined and drilled in our own works in India from DN 10 up to 8000 NB (8 metres), in carbon, boiler-quality, stainless, duplex and nickel-alloy plate, with EN 10204 3.1 certificates.

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Key to dimensions

D: Outside diameter of flange
B: Bore (inside diameter) of plate flange
C: Flange thickness — plate or blind, raised face (RF) or flat face (FF)
K: Bolt circle (pitch circle) diameter
n: Number of bolt holes
L: Bolt hole diameter
d1: Raised face diameter
f: Raised face height

ASME B16.47 Large Diameter Plate & Blind Flange Dimensions — tables

ASME B16.47 Series A Class 150 — plate and blind flange (mm)

Find a size

ASME B16.47 Series A Class 150 — plate and blind flange (mm)
SizeNB	DFlange OD · mm	KBolt circle · mm	nBolts	LHole dia · mm	d1Raised face · mm	fRF height · mm	BBore · mm	CPlate, RF · mm	CPlate, FF · mm	CBlind, RF · mm	CBlind, FF · mm
650	870	806.4	24	34.9	749	2	663.4	66.7	64.7	66.7	64.7
700	925	863.6	28	34.9	800	2	714.2	69.9	67.9	69.9	67.9
750	985	914.4	28	34.9	857	2	765	73.1	71.1	73.1	71.1
800	1060	977.9	28	41.3	914	2	815.8	79.4	77.4	79.4	77.4
850	1110	1028.7	32	41.3	965	2	866.6	81	79	81	79
900	1170	1085.8	32	41.3	1022	2	917.4	88.9	86.9	88.9	86.9
950	1240	1149.4	32	41.3	1073	2	968.2	85.8	83.8	85.8	83.8
1000	1290	1200.2	36	41.3	1124	2	1019	88.9	86.9	88.9	86.9
1050	1345	1257.3	36	41.3	1194	2	1069.8	95.3	93.3	95.3	93.3
1100	1405	1314.4	40	41.3	1245	2	1120.6	100.1	98.1	100.1	98.1
1150	1455	1365.2	40	41.3	1295	2	1171.4	101.6	99.6	101.6	99.6
1200	1510	1422.4	44	41.3	1359	2	1222.2	106.4	104.4	106.4	104.4
1250	1570	1479.6	44	47.6	1410	2	1273	109.6	107.6	109.6	107.6
1300	1625	1536.7	44	47.6	1461	2	1323.8	114.3	112.3	114.3	112.3
1350	1685	1593.8	44	47.6	1511	2	1374.6	119.1	117.1	119.1	117.1
1400	1745	1651	48	47.6	1575	2	1425.4	122.3	120.3	122.3	120.3
1450	1805	1708.2	48	47.6	1626	2	1476.2	127	125	127	125
1500	1855	1759	52	47.6	1676	2	1527	130.2	128.2	130.2	128.2

ASME B16.47 Series A Class 300 — plate and blind flange (mm)

ASME B16.47 Series A Class 300 — plate and blind flange (mm)
SizeNB	DFlange OD · mm	KBolt circle · mm	nBolts	LHole dia · mm	d1Raised face · mm	fRF height · mm	BBore · mm	CPlate, RF · mm	CPlate, FF · mm	CBlind, RF · mm	CBlind, FF · mm
650	970	876.3	28	44.5	749	2	663.4	77.8	75.8	82.6	80.6
700	1035	939.8	28	44.5	800	2	714.2	84.2	82.2	88.9	86.9
750	1090	997	28	47.6	857	2	765	90.5	88.5	93.7	91.7
800	1150	1054.1	28	50.8	914	2	815.8	96.9	94.9	98.5	96.5
850	1205	1104.9	28	50.8	965	2	866.6	100.1	98.1	103.2	101.2
900	1270	1168.4	32	54	1022	2	917.4	103.2	101.2	109.6	107.6
950	1170	1092.2	32	41.3	1029	2	968.2	106.4	104.4	106.4	104.4
1000	1240	1155.7	32	44.5	1086	2	1019	112.8	110.8	112.8	110.8
1050	1290	1206.5	32	44.5	1137	2	1069.8	117.5	115.5	117.5	115.5
1100	1355	1263.6	32	47.6	1194	2	1120.6	122.3	120.3	122.3	120.3
1150	1415	1320.8	28	50.8	1245	2	1171.4	127	125	127	125
1200	1465	1371.6	32	50.8	1302	2	1222.2	131.8	129.8	131.8	129.8
1250	1530	1428.8	32	54	1359	2	1273	138.2	136.2	138.2	136.2
1300	1580	1479.6	32	54	1410	2	1323.8	142.9	140.9	142.9	140.9
1350	1660	1549.4	28	60.3	1467	2	1374.6	150.9	148.9	150.9	148.9
1400	1710	1600.2	28	60.3	1518	2	1425.4	152.4	150.4	152.4	150.4
1450	1760	1651	32	60.3	1575	2	1476.2	157.2	155.2	157.2	155.2
1500	1810	1701.8	32	60.3	1626	2	1527	162	160	162	160

ASME B16.47 Series B Class 150 — plate and blind flange (mm)

ASME B16.47 Series B Class 150 — plate and blind flange (mm)
SizeNB	DFlange OD · mm	KBolt circle · mm	nBolts	LHole dia · mm	d1Raised face · mm	fRF height · mm	BBore · mm	CPlate, RF · mm	CPlate, FF · mm	CBlind, RF · mm	CBlind, FF · mm
650	785	744.5	36	22.2	711	2	663.4	39.8	37.8	43	41
700	835	795.3	40	22.2	762	2	714.2	43	41	46.2	44.2
750	885	846.1	44	22.2	813	2	765	43	41	49.3	47.3
800	940	900.1	48	22.2	864	2	815.8	44.6	42.6	52.5	50.5
850	1005	957.3	40	25.4	921	2	866.6	47.7	45.7	55.7	53.7
900	1055	1009.6	44	25.4	972	2	917.4	50.9	48.9	57.3	55.3
950	1125	1070	40	28.6	1022	2	969.7	52.5	50.5	62	60
1000	1175	1120.8	44	28.6	1080	2	1020.5	54.1	52.1	65.2	63.2
1050	1225	1171.6	48	28.6	1130	2	1071.3	57.3	55.3	66.8	64.8
1100	1275	1222.4	52	28.6	1181	2	1122.1	58.9	56.9	70	68
1150	1340	1284.3	40	31.8	1235	2	1172.9	60.4	58.4	73.1	71.1
1200	1390	1335.1	44	31.8	1289	2	1223.7	63.6	61.6	76.3	74.3
1250	1445	1385.9	48	31.8	1340	2	1274.5	66.8	64.8	79.5	77.5
1300	1495	1436.7	52	31.8	1391	2	1325.3	68.4	66.4	82.7	80.7
1350	1550	1492.2	56	31.8	1441	2	1376.1	70	68	85.8	83.8
1400	1600	1543	60	31.8	1492	2	1426.9	71.6	69.6	89	87
1450	1675	1611.3	48	34.9	1543	2	1477.7	73.1	71.1	91.9	89.9
1500	1725	1662.1	52	34.9	1600	2	1528.5	74.7	72.7	95.4	93.4

ASME B16.47 Series B Class 300 — plate and blind flange (mm)

ASME B16.47 Series B Class 300 — plate and blind flange (mm)
SizeNB	DFlange OD · mm	KBolt circle · mm	nBolts	LHole dia · mm	d1Raised face · mm	fRF height · mm	BBore · mm	CPlate, RF · mm	CPlate, FF · mm	CBlind, RF · mm	CBlind, FF · mm
650	865	803.3	32	34.9	737	2	666.7	87.7	85.7	87.7	85.7
700	920	857.2	36	34.9	787	2	717.5	87.4	85.4	87.4	85.4
750	990	920.8	36	38.1	845	2	769.9	92.1	90.1	92.1	90.1
800	1055	977.9	32	41.3	902	2	820.7	101.6	99.6	101.6	99.6
850	1110	1031.9	36	41.3	953	2	871.5	101.6	99.6	101.6	99.6
900	1170	1089	32	44.5	1010	2	922.3	101.6	99.6	101.6	99.6
950	1220	1139.8	36	44.5	1060	2	973.1	109.6	107.6	109.6	107.6
1000	1275	1190.6	40	44.5	1114	2	1023.9	114.3	112.3	114.3	112.3
1050	1335	1244.6	36	47.6	1168	2	1076.2	117.5	115.5	117.5	115.5
1100	1385	1295.4	40	47.6	1219	2	1127	125.5	123.5	125.5	123.5
1150	1460	1365.2	36	50.8	1270	2	1177.8	127	125	128.6	126.6
1200	1510	1416	40	50.8	1327	2	1228.6	127	125	133.4	131.4
1250	1560	1466.8	44	50.8	1378	2	1279.4	136.6	134.6	138.2	136.2
1300	1615	1517.6	48	50.8	1429	2	1330.2	141.3	139.3	142.6	140.6
1350	1675	1578	48	50.8	1480	2	1381	135	133	147.7	145.7
1400	1765	1651	36	60.3	1537	2	1431.8	152.4	150.4	155.4	153.4
1450	1825	1712.9	40	60.3	1594	2	1482.6	152.4	150.4	160.4	158.4
1500	1880	1763.7	40	60.3	1651	2	1533.4	149.3	147.3	165.1	163.1

Notes

All dimensions are in millimetres; sizes are nominal bore (NB / DN).
Plate flange thickness is given for raised-face (RF) and flat-face (FF) flanges; where only RF is shown, the FF thickness is the same.
Reference values for estimation and checking. Verify against the current edition of the standard and the purchase specification before design, purchase or fabrication.

Reference information compiled from the published standard for convenience. It does not replace the current edition of the governing standard, which takes precedence. Verify critical dimensions and properties before design, purchase or fabrication. Teshi Engineers & Sales Promoters (P) Ltd accepts no liability for errors or omissions.

FAQ

ASME B16.47 Large Diameter Plate & Blind Flange dimensions: common questions

Can plate flanges be made above NPS 60?

Yes. ASME B16.47 stops at NPS 60, but plate and ring flanges can be made to drawing far beyond that — Teshi Group makes them up to 8000 NB (8 metres).

What is the difference between Series A and Series B?

Series A (formerly MSS SP-44) flanges are heavier with fewer, larger bolts; Series B (formerly API 605) flanges are more compact. They do not mate with each other.

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ASME B16.47 Large Diameter Plate & Blind Flange Dimensions

Key to dimensions

ASME B16.47 Large Diameter Plate & Blind Flange Dimensions — tables

ASME B16.47 Series A Class 150 — plate and blind flange (mm)

ASME B16.47 Series A Class 300 — plate and blind flange (mm)

ASME B16.47 Series B Class 150 — plate and blind flange (mm)

ASME B16.47 Series B Class 300 — plate and blind flange (mm)

Notes

ASME B16.47 Large Diameter Plate & Blind Flange dimensions: common questions

Related products, data sheets and standards

Slip-On Flange

Blind Flange

ASME B16.47 Series A flange dimensions

ASME B16.47 Series B flange dimensions

AWWA C207 Class D flange dimensions

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