BS 1387: 1985 has been withdrawn and replaced with the European Standard EN 10255 : 2004 (implemented by UK national standard body as BS EN 10255 : 2004 "Non-alloy steel tubes suitable for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.
| EN 10255 L | |
| EN 10255 L1 | |
| EN 10255 L2 | BS 1387 Light |
| EN 10255 Medium | BS 1387 Medium |
| EN 10255 Heavy | BS 1387 Heavy |
| 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 | |||
The standard is applicable to tubes of nominal size DN8 to DN150 in light, medium and heavy thickness.
BS 1387: 1985 has been withdrawn and replaced with the European Standard EN 10255 : 2004 (implemented by UK national standard body as BS EN 10255 : 2004 "Non-alloy steel tubes suitable for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.
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