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Dimensions and weights of steel tubes according BSi - BS 1387:1985 Specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads
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Dimensions and weight of steel tubes according the British Standard - BS 1387:1985 "Specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads" can be found in the table below:
| Nominal 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.
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