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BS 10 Flanges | Table D E F H | British Standard

Home BS 10 Flanges

BS 10 is a longstanding British Standard that sets the dimensions, materials, and requirements for cast iron and steel pipe flanges and flanged fittings in low to medium pressure piping. Newer standards like BS EN 1092-1 have replaced it in many regions, but BS 10 is still widely referenced and used in legacy systems, water distribution, general industrial piping, and markets shaped by British engineering practice, especially in the UK, Australia, Asia, and Africa. The standard sorts flanges into tables, mainly Table D, E, F, H, and J, each tied to a specific working steam pressure and service condition. PM Industries manufactures, supplies, and stocks BS 10 flanges across these tables in a range of sizes and materials.

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Table D flanges are rated for working steam pressures up to 50 psi (about 3.5 bar), and Table E handles up to 100 psi. The higher tables, Table F (up to 150 psi) and Table H (up to 250 psi), add flange thickness and heavier bolting for tougher service. Each table fixes the dimensions that keep flanges interchangeable: outside diameter, bolt circle (PCD), the number and size of bolt holes, raised or flat face details, and overall thickness. Sizes run from ½ inch (15 NB) up to 48 inches and larger, so they cover both small utility lines and large-bore work.

We make BS 10 flanges from cast iron for the lower tables and from carbon steel or stainless steel where you need more strength and corrosion resistance. Common types include slip-on, weld neck, blind, and plate, with flat face (FF) or raised face (RF) options to suit different gaskets. The design holds up against internal pressure along with external mechanical loads, thermal cycling, and installation stress found in lines for water, steam, oil, gas, and chemicals.

The lasting strength of BS 10 is its simplicity and proven reliability in non-critical or moderate service. Standardized bolt patterns and dimensions make parts easy to interchange, which helps with maintenance and upgrades. In Australia, the metric AS 2129 draws heavily on BS 10, so the principles carry into regional infrastructure. The conservative design margins are part of why engineers still trust it for long service when the flange is chosen and installed with suitable gaskets and bolting.

Even with the move toward ASME and EN standards, BS 10 flanges are still produced worldwide for replacement parts, new projects in compatible regions, and cost-effective work where high-pressure ratings are not needed. Getting the material, pressure-temperature rating, and bolting and gasket standards right is what delivers the best performance. PM Industries holds stock ready to ship, with certification and test documentation on every order. Tell us your table, size, type, face, and material, and we will quote it.

Specification BS 10 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

flanges

Lap Joint

Weld Neck

Weld Neck

Male Female

Male Female

Nippo

Nippo

flanges

Orifice

flanges

Plate

flanges

Puddle

Raised Face

Raised Face

Reducing

Reducing

Ring Spacer

Ring Spacer

Ring Type Joint

Ring Type Joint

Slip on

Slip on

SocketWeld

SocketWeld

Spade

Spade

Spectacle Blind

Spectacle Blind

Square

Square

Threaded Screwed

Threaded Screwed

Tongue Groove

Tongue Groove

EWeld Neck

Weld Neck

Environment

Weldo


Bs 10 Table D Flange Dimensions In Mm

N.B. SIZEDKLACN1N2BH1H2R1R2HOLES
InchMM             
½”1595.366.814.521.34.827.033.322.49.522.26.41.64
¾”20101.673.214.526.74.833.338.127.711.122.26.41.64
1″25114.382.614.533.54.842.947.634.611.122.26.41.64
1 ¼”32120.787.414.542.26.449.255.643.211.125.46.41.64
1 ½”40133.498.614.548.36.458.761.949.512.728.66.41.64
2″50152.4114.317.560.57.969.974.662.012.728.66.41.64
2 ½”65165.1127.017.573.27.982.690.574.715.931.86.41.64
3″80184.2146.117.588.99.7101.6106.490.715.934.96.41.64
3 ½”88203.2165.117.5101.69.7114.3119.1103.417.534.96.41.64
4″100215.9177.817.5114.39.7130.2133.4116.119.141.39.53.24
5″125254.0209.617.5141.212.7152.4160.3143.819.144.59.53.28
6″150279.4235.017.5168.412.7184.2185.7171.719.147.69.53.28
8″200336.6292.117.5219.212.7241.3241.3221.522.250.89.53.28
10″250406.4355.622.2273.116.0292.1298.5276.427.063.59.53.28
12″300457.2406.422.2323.919.1342.9349.3325.928.669.99.54.812
14″350527.1469.925.4355.622.2406.4-359.2-73.09.54.812
16″400577.9520.725.4406.422.2--410.5----12
18″450641.4584.225.4457.225.4--461.8----12
20″500704.9641.425.4508.028.6--513.1----16
24″600825.5755.728.7609.631.8--616.0----16

Bs 10 Table D Flange Weight

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 10 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

Bs 10 Flange Pressure Rating

°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

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Testing

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  • X-ray detector
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