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BS1387 Hot Dipped Galvanized Steel Pipe
1, Steel No.
C(max)a |
Mn |
P(max) |
S(max) |
Si(min) |
Cu(max)a |
Ni(max)a |
Cr(max)a |
Mo(max)a |
V(max)a |
|
Grade A: |
0.25 |
0.95 |
0.05 |
0.045 |
0.4 |
0.4 |
0.4 |
0.15 |
0.08 |
0.08 |
Grade B: |
0.3 |
1.2 |
0.05 |
0.045 |
0.4 |
0.4 |
0.4 |
0.15 |
0.08 |
0.08 |
B These five elements combined shall not exceed +/-1 %.
2, Diameter & Tolerance:
For pipe = NPS 11⁄2 [DN 40], the outside diameter at any point shall not vary more than 1⁄64 in. [0.4 mm].
For pipe =NPS 2 [DN 50], the outside diameter shall not vary more than +/-1%.
3, Tensile Requirements
Grade A
Minimum Yield: 30,000 PSI (205MPa)
Minimum Tensile: 48,000 PSI (330MPa)
Grade B
Minimum Yield: 35,000 PSI (240MPa)
Minimum Tensile: 60,000 PSI (415MPa)
4, Wall Thickness & Tolerance:
Wall thickness: Scheduled
Wall Tolerance: +/- 12.5%
5, Galvanized
1), Zinc: The zinc used for the coating shall be any grade of zinc conforming to Specification B 6
2), Weight of Coating The weight of zinc coating shall be not less than 1.8 oz/ft2[0.55 kg/m2] as determined from the average results of the two specimens taken for test in the manner prescribed in 19.5 and not less than 1.6 oz/ft2[0.49kg/m2] for either of these specimens. And testing the weight of zinc according to ASTMB90
6, Common Uses:
- Low pressure systems
- Structural applications
- Mechanical components
- Bollards
- Casing
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