Bao Tin Steel specializes in providing BS 1387-1985 Hoa Phat Viet Duc standard steel.

VinaPipe and SeAH round steel products Ho Hoa Phat, Viet Duc, SeAH, and VinaPipe steel pipes include black steel pipes (black welded steel), powder-coated steel pipes (inner shell and outer shell), square steel, and coated angle steel heat. Steel pipe: rectangular with standard sizes BI OD21.2 to 219.1mm, thickness from 1.6mm to 7.92mm… Standard: BS 1387-85 (and other standards). BS 1387/1985.
Specifications of Galvanized SeAH Steel Pipe Standard BS 1387: 1985
| Level | Size | Outer diameter | Thickness | Weight | piece/ Bundle. | |||
|---|---|---|---|---|---|---|---|---|
| Max | Min | Straight head | Threaded tooth with connector | |||||
| NPS | DN | mm | mm | mm | Kg/m | Kg/m | ||
| Lightest | 3/8″ | 10 | 17.1 | 16.7 | 1.6 | 0.604 | 0.652 | 217 |
| 1/2″ | 15 | 21.4 | 21 | 1.9 | 0.904 | 0.922 | 217 | |
| 3/4″ | 20 | 26.9 | 26.4 | 2.1 | 1.274 | 1.296 | 127 | |
| 1 | 25 | 33.8 | 33.2 | 2.3 | 1.77 | 1.803 | 91 | |
| 1 – 1/4″ | 32 | 42.5 | 41.9 | 2.3 | 2.263 | 2.301 | 61 | |
| 1 – 1/2″ | 40 | 48.4 | 47.8 | 2.5 | 2.811 | 2.855 | 61 | |
| 2 | 50 | 60.2 | 59.6 | 2 | 2.856 | – | 37 | |
| 2 | 50 | 60.2 | 59.6 | 2.6 | 3.674 | 3.726 | 37 | |
| 2 – 1/2″ | 65 | 76 | 75.2 | 2.9 | 5.199 | 5.275 | 37 | |
| 3 | 80 | 88.7 | 87.9 | 2.9 | 6.107 | 6.191 | 19 | |
| 4 | 100 | 113.9 | 113 | 2.5 | 6.843 | – | 19 | |
| 4 | 100 | 113.9 | 113 | 3.2 | 8.704 | 8.815 | 19 | |
| Light | 3/8″ | 10 | 17.1 | 16.7 | 1.8 | 0.67 | 0.676 | 217 |
| 1/2″ | 15 | 21.4 | 21 | 2 | 0.947 | 0.956 | 217 | |
| 3/4″ | 20 | 26.9 | 26.4 | 2.3 | 1.384 | 1.39 | 127 | |
| 1 | 25 | 33.8 | 33.2 | 2.6 | 1.981 | 2 | 91 | |
| 1 – 1/4″ | 32 | 42.5 | 41.9 | 2.6 | 2.539 | 2.57 | 61 | |
| 1 – 1/2″ | 40 | 48.4 | 47.8 | 2.9 | 3.232 | 3.27 | 61 | |
| 2 | 50 | 60.2 | 59.6 | 2.9 | 4.076 | 4.15 | 37 | |
| 2 – 1/2″ | 65 | 76 | 75.2 | 3.2 | 5.713 | 5.83 | 37 | |
| 3 | 80 | 88.7 | 87.9 | 3.2 | 6.715 | 6.89 | 19 | |
| 4 | 100 | 113.9 | 113 | 3.6 | 9.756 | 10 | 19 | |
| Medium | 3/8″ | 10 | 17.4 | 16.8 | 2.3 | 0.839 | 0.845 | 217 |
| 1/2″ | 15 | 21.7 | 21.1 | 2.6 | 1.205 | 1.22 | 217 | |
| 3/4″ | 20 | 27.2 | 26.6 | 2.6 | 1.558 | 1.57 | 127 | |
| 1 | 25 | 34.2 | 33.4 | 3.2 | 2.415 | 2.43 | 91 | |
| 1 – 1/4″ | 32 | 42.9 | 42.1 | 3.2 | 3.101 | 3.13 | 61 | |
| 1 – 1/2″ | 40 | 48.8 | 48 | 3.2 | 3.567 | 3.61 | 61 | |
| 2 | 50 | 60.8 | 59.8 | 3.6 | 5.034 | 5.1 | 37 | |
| 2 – 1/2″ | 65 | 76.6 | 75.4 | 3.6 | 6.427 | 6.55 | 37 | |
| 3 | 80 | 89.5 | 88.1 | 4 | 8.365 | 8.54 | 19 | |
| 4 | 100 | 114.9 | 113.3 | 4.5 | 12.162 | 12.5 | 19 | |
| 5 | 125 | 140.6 | 138.7 | 5 | 16.609 | 17.1 | 7 | |
| 6 | 150 | 166.1 | 164.1 | 5 | 19.74 | 20.3 | 7 | |
| Heavy | 3/8″ | 10 | 17.4 | 16.8 | 2.9 | 1.015 | 1.03 | 217 |
| 1/2″ | 15 | 21.7 | 21.1 | 3.2 | 1.436 | 1.45 | 217 | |
| 3/4″ | 20 | 27.2 | 26.6 | 3.2 | 1.87 | 1.88 | 127 | |
| 1 | 25 | 34.2 | 33.4 | 4 | 2.939 | 2.96 | 91 | |
| 1 – 1/4″ | 32 | 42.9 | 42.1 | 4 | 3.798 | 3.83 | 61 | |
| 1 – 1/2″ | 40 | 48.8 | 48 | 4 | 4.38 | 4.42 | 61 | |
| 2 | 50 | 60.8 | 59.8 | 4.5 | 6.192 | 6.26 | 37 | |
| 2 – 1/2″ | 65 | 76.6 | 75.4 | 4.5 | 7.934 | 8.05 | 37 | |
| 3 | 80 | 89.5 | 88.1 | 5 | 10.333 | 10.5 | 19 | |
| 4 | 100 | 114.9 | 113.3 | 5.4 | 14.475 | 14.8 | 19 | |
| 5 | 125 | 140.6 | 138.7 | 5.4 | 17.884 | 18.4 | 7 | |
| 6 | 150 | 166.1 | 164.1 | 5.4 | 21.266 | 21.9 | 7 | |
Note: 1 inch = 25.4 millimeters (mm)
You can view the BS 1387-1985 standard if needed, you can contact Bao Tin Steel to receive information about the price list, steel pipes, and BS 1387-1985 standard. Bao Tin Steel is reputable in providing high-quality steel bars and accessories at the best prices on the market.

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