B.S. STANDARDS
B.S STEEL PIPS SIZES
Pipe Schedule 100 - BS 1387- 85 CLASS A-1, Commercial Grade Steel Tubes
| Nominal Bore | Outside Diameter | Wall Thickness | Nominal Weight (Mass) per unit length | Pieces Per Bundle |
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| A | B | Max. (Inches) | Min. (mm) | Max. (Inches) | Min. (mm) | (Inches) | (mm) | Plain End (lb/ft) | Plain End (kg/m) | Threads & Couplings (lb/ft) |
| 1/2" | 15 | 0.831 | 21.10 | 0.815 | 20.70 | 0.075 | 1.90 | 0.60 | 0.89 | 150 |
| 3/4" | 20 | 1.051 | 26.70 | 1.035 | 26.30 | 0.083 | 2.10 | 0.847 | 1.25 | 105 |
| 1" | 25 | 1.299 | 33.00 | 1.283 | 32.60 | 0.090 | 2.30 | 1.163 | 1.74 | 70 |
| 1-1/2" | 32 | 1.646 | 41.80 | 1.630 | 41.40 | 0.091 | 2.30 | 1.499 | 2.23 | 48 |
| 1-1/4" | 40 | 1.880 | 47.70 | 1.862 | 47.30 | 0.098 | 2.50 | 1.862 | 2.27 | 42 |
| 2" | 50 | 2.358 | 59.90 | 2.335 | 59.30 | 0.102 | 2.60 | 2.453 | 3.66 | 30 |
| 2-1/2" | 65 | 2.957 | 75.10 | 2.933 | 74.50 | 0.114 | 2.90 | 3.454 | 5.14 | 25 |
| 3" | 80 | 3.465 | 88.00 | 3.441 | 87.40 | 0.114 | 2.90 | 4.072 | 6.06 | 20 |
| 4" | 100 | 4.453 | 133.10 | 4.429 | 112.50 | 0.126 | 3.20 | 5.813 | 5.66 | 10 |
| 5" | 125 | 5.535 | 140.60 | 5.461 | 138.70 | 0.177 | 4.50 | 10.081 | 15.00 | 8 |
| 6" | 150 | 6.539 | 166.10 | 6.461 | 164.10 | 0.177 | 4.50 | 11.976 | 17.82 |
|
| 8" | 200 | 8.555 | 217.30 | 8.476 | 215.30 | 0.209 | 5.30 | 18.545 | 27.58 | 5 |