EN 10255

BS 1387: 1985 has been withdrawn and replaced with the European Standard EN 10255 : 2004 (implemented by UK national standard body as BS EN 10255 : 2004 “Non-alloy steel tubes suitable for welding or threading”). The table below gives the corresponding types in BS 1387 and EN 10255.

BS 1387(Light)

 Normal Bore Outside Diameter Thickness Mass
Light Medium/heavy Light Medium heavy Light Medium Heavy
in
mm
mm
mm
mm
mm
mm
Kg/m
Kg/m
Kg/m
1/4 8 13.60 13.90 1.80 2.30 2.90 0.515 0.641 0.765
3/8 10 17.10 17.40 1.80 2.30 2.90 0.670 0.839 1.020
1/2 15 21.40 21.70 2.00 2.60 3.20 0.947 1.210 1.440
3/4 20 26.90 27.20 2.30 2.60 3.20 1.380 1.560 1.870
1 25 33.80 34.20 2.60 3.20 4.00 1.980 2.410 2.940
1(1/4) 32 42.50 42.90 2.60 3.20 4.00 2.540 3.100 3.800
1(1/2) 40 48.40 48.80 2.90 3.20 4.00 3.230 3.570 4.380
2 50 60.20 60.80 2.90 3.60 4.50 4.080 5.030 6.190
2(1/2) 65 76.00 76.60 3.20 3.60 4.50 5.710 6.430 7.930
3 80 88.70 89.50 3.20 4.00 5.00 6.720 8.370 10.300
4 100 113.90 114.90 3.60 4.50 5.40 9.750 12.200 14.500
5 125   140.60   5.00 5.40   16.600 17.900
6 150   166.10   5.00 5.40   19.700 21.300
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