BS 1560 Flanges | Class 150-2500 | ANSI Compatible

BS 1560 flanges are widely used pipe connection components built for reliable performance in pressure piping. You will find them across oil and gas, petrochemical, power generation, water treatment, and general process engineering. They are made to British Standard specifications and are known for precise dimensions, dependable sealing, and easy compatibility with pipes, valves, and fittings. PM Industries manufactures, supplies, and stocks BS 1560 flanges in a full range of types, sizes, and pressure classes.

about-flanges
flanges-bg-1024x576

We produce BS 1560 flanges in weld neck, slip-on, blind, threaded, and lap joint styles, so engineers can pick the design that fits the pressure class, temperature, and installation in front of them. The circular shape and bolted connection make them quick to assemble and take apart, which helps a lot during maintenance, inspection, and replacement in complex piping. Depending on the service, we make them in carbon steel, stainless steel, alloy steel, cast iron, and other specified materials for the right mix of strength, corrosion resistance, and service life. They come in a range of pressure ratings and nominal sizes, so they suit both low-pressure utility lines and high-pressure industrial systems.

The flange face type, bolt pattern, and gasket compatibility are all controlled to give a secure, leak-tight joint when the flange is installed properly. In hard service, BS 1560 flanges keep connections stable under vibration, thermal expansion, and pressure swings, which supports overall system safety. The standardized design also makes procurement and replacement simpler, since parts match consistently from one project or facility to the next.

For any operation that depends on solid piping integrity, BS 1560 flanges strike a sound balance of durability, versatility, and easy installation. That established standardization is why engineers, fabricators, and maintenance teams keep reaching for them in critical service. PM Industries holds stock ready to ship, with certification and test documentation on every order. Tell us your flange type, size, class, face, and material, and we will quote it.

Specification BS 1560 Flanges

StandardsANSI/ASME B16.5, B16.48, ANSI Flanges, GOST Flanges, DIN Flanges, EN-1092, B16.47 Series A & B, ASME Flanges, EN Flanges, AWWA Flanges, BS Flanges.
JIS Standard 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
DIN FLANGESDIN 2527, 2627, 2631, 2656, 2576, 2673, 2629, 2628, 2566, 2641, 2637, 2655, 2634, 2636, 2632, 2633, 2638, 2642, 2573, 2635.
Pressure RatingClass 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
TypesThreaded, Plate, Screwed, Forged.
Supporting materialGasket, Ring Joint, Flange Bolts
Size range1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Production techniqueForged, machined and Heat treated
Available Flange TypeWeld Neck Flanges, RTJ Flanges, Slip On Flanges, Spectacle Blind Flanges, Flanges Gaskets, Square Flanges, Standard Insert Flanges, High Hub Blinds Flanges, Flat Flanges, forged flanges, Weldo / Nipo Flanges, Jacket Insert Flanges, Tongue groove Flanges, Blind Flanges, Socket Weld Flanges, Large diameter Flanges, Long Weld Neck Flanges, Spacer Blinds, SWRF Flanges, SORF Flanges, Angle Face Rings Flanges, Spades Ring Spacers Flanges, WNRF Flanges, Screwed Flanges, Insert Flanges, flanges bolts, cf flange, Lap Joint Flanges, ASME B16.36 Orifice Flanges, Plate Flange, Expander Flanges, Ring Type Joint Flanges, Loose Flanges, Reducing Flanges, puddle flange, Threaded Flanges, blank flange, vacuum flange.
Connect Type/ Flange Face TypeRing Type Joint (RTJ), Flat Face (FF), Tongue & Groove, Small Male-Female (SMF), Lap-Joint Face (LJF), Raised Face (RF), Large Male-Female (LMF), Small Tongue.
Custom designAs per your drawing
TestDirect-reading Spectrograph, X-ray detector, UItrasonic flaw detector, Magnetic particle detector, Hydrostatic testing machine.
OriginIndian / USA / Korean / West Europe / Japan
Pressure ClassPN 6 TO PN 100
ThicknessNormal Pipe Size ≤ 18
Bore DiameterNormal Pipe ≤ 10
High TemperatureAbove 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Low TemperatureAbove -29 Degree C (−20°F)
Coating/Surface Treatment:Zinc Plated, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized.
European/African/Russian Standard FlangesAvailable
Gaskets TypesFull Face, Metallic Ring, Flat Ring Gasket
Marking Standard
Name of Manufacturer
Schedule
Type of Flange Facing
Pressure Class
Nominal Pipe Size, etc
Test Certificates
EN 10204/3.1B, NACE MR0103, NACE MR0175
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc

Flange Type Available


Bs1560 Flange Dimensions

SIZEDNINNER RING IDELEMENT IDELEMENT ODOUTER RING OD
CLASSCLASSCLASSCLASS
150 300400 60090015002500150 300400 60090015002500150
600
900
2500
15030040060090015002500
1/2”1514.214.2-14.214.219.119.1-19.119.131.831.847.854.1-54.1-63.569.9
3/4”2020.620.6-20.620.625.425.4-25.425.439.639.657.266.8-66.8-69.976.2
1”2526.926.9-26.926.931.831.8-31.831.847.847.866.873.2-73.2-79.585.9
11/4”3238.138.1-33.333.347.847.8-39.639.660.560.576.282.6-82.6-88.9104.9
11/2”4044.544.5-41.441.454.154.1-47.847.869.969.985.995.3-95.3-98.6117.6
2”5055.655.6-52.352.369.969.9-58.758.785.985.9104.9111.3-111.3-143.0146.1
21/2”6566.566.5-63.563.582.682.6-69.969.998.698.6124.0130.3-130.3-165.1168.4
3”8081.081.078.778.778.7101.6101.695.392.292.2120.7120.7136.7149.4-149.4168.4174.8196.9
4”100106.4102.6102.697.897.8127.0120.7120.7117.6117.6149.4149.4174.8181.1177.8193.8206.5209.6235.0
5”125131.8128.3128.3124.5124.5155.7147.6147.6143.0143.0177.8177.8196.9215.9212.9241.3247.7254.0279.4
6”150157.2154.9154.9147.3147.3182.6174.8174.8171.5171.5209.6209.6222.3251.0247.7266.7289.1282.7317.5
8”200215.9205.7196.9196.9196.9233.4225.6222.3215.9215.9263.7257.3279.4308.1304.8320.8358.9352.6387.4
10”250268.2255.3246.1246.1246.1287.3274.6276.4266.7270.0317.5311.2339.9362.0358.9400.1435.1435.1476.3
12”300317.5307.3292.1292.1292.1339.9327.2323.9323.9317.5374.7368.3409.7422.4419.1457.2498.6520.7549.4
14”350349.3342.9320.8320.8-371.6362.0355.6362.0-406.4400.1450.9485.9482.6492.3520.7577.9-
16”400400.1389.9374.7368.3-422.4412.8412.8406.4-463.6457.2514.4539.8536.7565.2574.8641.4-
18”450449.3438.2425.5425.5-474.7469.9463.6463.6-527.1520.7549.4596.9593.9612.9638.3704.9-
20”500500.1489482.6476.3-525.5520.7520.7514.4-577.9571.5606.6654.1647.7682.8698.5755.7-
24”600603.3590.6590.6577.9-628.7628.7628.7616.0-685.8679.5717.6774.7768.4790.7838.2901.7-

Bs 1560 Weld Neck Flange Weight Chart

StandardClassDiameterBolt Circle DiameterNumber of BoltsBolt SizeDiameter of Bolt Hole
AS4087 FlangesPN14 Flanges95674M1214
AS 2129 FlangeTable C Flanges956741314
Table D Flanges956741314
Table E Flanges956741314
Table F Flanges956741314
Table H Flanges1148341617
Table J Flanges1148341617
ANSI B16.5 FlangesANSI 150 Flanges896041316
ANSI 300 Flanges956741316
ANSI 600 Flanges956741316
ANSI 900 Flanges1218341922
ANSI 1500 Flanges1218341922
BS 10 (DIN) FlangePN6 Flanges80554M1011
PN10 Flanges95654M1214
PN16 Flanges95654M1214
PN20 Flanges9060.54M1416
PN25 Flanges95654M1214
PN40 Flanges95654M1214

Sizes of BS 1560 Flanges

NOMINAL BORE 15PCDFLANGE DIAM. IN MILLIMETERBOLTSHOLE SIZEBOLT SIZETHICK.
Tables D2 5/8 / 673 3/4 / 9549/16 / 141/23/8 / 10
Tables E2 5/8 / 673 3/4 / 9549/16 / 141/23/8 / 10
Tables F2 5/8 / 673 3/4 / 9549/16 / 141/23/8 / 10
Tables H3 1/4 / 834 1/2 / 114411/16 / 175/81/2 / 13
Tables J3 1/4 / 834 1/2 / 114411/16 / 175/85/8 / 16
Tables K3 1/4 / 834 1/2 / 114411/16 / 175/83/4 / 19
NOMINAL BORE 20PCDFLANGE DIA. in mmBOLTSHOLE SIZEBOLT SIZETHICK.
Table D2 7/8 / 734 / 10249/16 / 141/23/8 / 10
Table E2 7/8 / 734 / 10249/16 / 141/23/8 / 10
Table F2 7/8 / 734 / 10249/16 / 141/23/8 / 10
Table H3 1/4 / 834 1/2 / 114411/16 / 175/81/2 / 13
Table J3 1/4 / 834 1/2 / 114411/16 / 175/85/8 / 16
Table K3 1/4 / 834 1/2 / 114411/16 / 175/83/4 / 19
NOMINAL BORE 25PCDFLANGE DIAME.BOLTSHOLE SIZEBOLT SIZETHICK.
Table D3 1/4 / 834 1/2 / 11449/16 / 141/23/8 / 10
Table E3 1/4 / 834 1/2 / 11449/16 / 141/23/8 / 10
Table F3 7/16 / 874 3/4 / 12149/16 / 145/83/8 / 10
Table H3 7/16 / 874 3/4 / 121411/16 / 175/89/16 / 14
Table J3 7/16 / 874 3/4 / 121411/16 / 175/83/4 / 19
Table K3 3/4 / 955 / 127411/16 / 175/87/8 / 22
NOMINAL BORE 32PCDFLANGE DIA.BOLTSHOLE SIZEBOLT SIZETHICK.
Table D3 7/16 / 874 3/4 / 12149/16 / 141/21/2 / 13
Table E3 7/16 / 874 3/4 / 12149/16 / 141/21/2 / 13
Table F3 7/8 / 985 1/4 / 133411/16 / 175/81/2 / 13
Table H3 7/8 / 985 1/4 / 133411/16 / 175/811/16 / 17
Table J3 7/8 / 985 1/4 / 133411/16 / 175/83/4 / 19
Table K3 7/8 / 985 1/4 / 133411/16 / 175/87/8 / 22
NOMINAL BORE 40PCDFLANGE DIA.BOLTSHOLE SIZEBOLT SIZETHICK.
Table D3 7/8 / 985 1/4 / 13349/16 / 141/21/2 / 13
Table E3 7/8 / 985 1/4 / 13349/16 / 141/21/2 / 13
Table F4 1/8 / 1055 1/2 / 140411/16 / 175/81/2 / 13
Table H4 1/8 / 1055 1/2 / 140411/16 / 175/811/16 / 17
Table J4 1/8 / 1055 1/2 / 140411/16 / 175/87/8 / 22
Table K4 1/2 / 1146 / 15247/8 / 223/41 / 25
NOMINAL BORE 50PCDFLANGE DIA.BOLTSHOLE SIZEBOLT SIZETHICK.
Tables D4 1/2 / 1146 / 152411/16 / 175/89/16 / 14
Tables E4 1/2 / 1146 / 152411/16 / 175/89/16 / 14
Tables F5 / 1276 1/2 / 165411/16 / 175/85/8 / 16
Tables H5 / 1276 1/2 / 165411/16 / 175/83/4 / 19
Tables J5 / 1276 1/2 / 16547/8 / 223/41 / 25
Tables K5 / 1276 1/2 / 165811/16 / 175/81 / 25
NOMINAL BORE 65PCDFLANGE DIA.BOLTSHOLE SIZEBOLT SIZETHICK.
Tables D5 / 1276 1/2 / 165411/16 / 175/89/16 / 14
Tables E5 / 1276 1/2 / 165411/16 / 175/89/16 / 14
Tables F5 3/4 / 1467 1/4 / 184811/16 / 175/85/8 / 16
Tables H5 3/4 / 1467 1/4 / 184811/16 / 175/83/4 / 19
Tables J5 3/4 / 1467 1/4 / 18487/8 / 223/41 / 25
Tables K5 3/4 / 1467 1/4 / 18487/8 / 223/41 1/8 / 29
NOMINAL BORE 80PCDFLANGE DIA.BOLTSHOLE SIZEBOLT SIZETHK.
Tables D7 / 1788 1/2 / 216411/16 / 175/811/16 / 17
Tables E7 / 1788 1/2 / 216811/16 / 175/811/16 / 17
Tables F7 1/2 / 1919 / 229811/16 / 175/83/4 / 19
Tables H7 1/2 / 1919 / 229811/16 / 175/81 / 25
Tables J7 1/2 / 1919 / 22987/8 / 223/41 3/8 / 35
Tables K7 3/4 / 1979 1/2 / 24181 / 257/81 3/8 / 35
NOMINAL BORE 100PCDFLANGE DIA.BOLTSHOLE SIZEBOLT SIZETHICK.
Tables D7 / 1788 1/2 / 216411/16 / 175/811/16 / 17
Tables E7 / 1788 1/2 / 216811/16 / 175/811/16 / 17
Tables F7 1/2 / 1919 / 229811/16 / 175/83/4 / 19
Tables H7 1/2 / 1919 / 229811/16 / 175/81 / 25
Tables J7 1/2 / 1919 / 22987/8 / 223/41 3/8 / 35
Tables K7 3/4 / 1979 1/2 / 24181 / 257/81 3/8 / 35

Pressure Rating Of BS1560 Blind Flanges

°C-17.8
To 232.2
287.8343.3399441468Max
Hyd.
Test
Press
kPa
"E"
689.7
1379.4
586.2
1172.5
482.8
965.6
379.3
793.2
-
-
-
-
1034.6
2069.5
Pipe
Nom
Size
(in.)
Pipe
Nom
OD
(mm.)
Diameter of
flange
Bolt Circle
Diameter
Diameter of
Bolts
Number of
Bolts
Thickness of
Flange
Approximate
Weight in kilos
½21.395.266.71246.350.4
¾26.9101.673.01246.350.5
133.7114.382.61247.140.6
1 ¼42.2120.687.31247.940.8
1 ½48.3133.498.41248.730.9
260.3152.4114.31649.531.4
2 ½73.0165.1127.016410.321.6
388.9184.2146.016411.11.8
3 ½101.6203.2165.116811.912.0
4114.3215.9177.816812.72.5
5141.3254.0209.616814.34.0
6168.3279.4235.020817.55.5
8219.1336.6292.120819.08.0
10273406.4355.6201222.212.0
12323.8457.2406.4221225.416.0
14355.6527.0469.9221228.621.0
16406.4577.85520.7221231.7523.0
18457.2641.3584.2221634.939.0
20508704.8641.3221638.142.0
24609.6825.5755.6301647.666.0

Application

  • Food & Beverage
  • Paper Industry
  • Pharmaceutical
  • Hospital Equipment
  • Textiles
  • Dairy
  • Aircraft
  • Chemicals
  • Others Parts in Machinery
Employee

Testing

  • Hydrostatic Test
  • Macro Test
  • Ultra Sonic Test (UT)
  • Micro Test
  • Hardness Test
  • Radiography Test
  • Pitting Resistance Test
  • PMI Testing
  • Mechanical Testing
  • X-ray detector
MARKET

Packing

  • Wooden Boxes
  • Shrink-Wrappedt
  • Carton Boxes
  • Wooden Crates
  • Wooden Pallets
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