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Hot dipped galvanized pipe owns thicker zinc coating than pre-galvanized pipe. Black pipes are dipped into a zinc pool for the galvanization process.
Standard: GB/T3091 - 2001, BS1387 - 1985, DIN EN10025, EN10219, JIS G3444:2004, ASTM A53
Steel Grade: Q195, Q235, Q345, S235JR, S275JR, S355JR, S355J2H, STK400, STK500, GR. A/B/C/D
| Outer Diameter | Wall Thickness | Length | |
|---|---|---|---|
| Inch | mm | mm | meter |
| 1/2" | 21.3mm | 0.6-3.0mm | 0.3-12m |
| 3/4" | 26.9mm | 0.6-3.0mm | 0.3-12m |
| 1" | 33.4mm | 1.0-3.0mm | 0.3-12m |
| 2" | 60.3mm | 1.5-4.0mm | 0.3-12m |
| 4" | 114.3mm | 2.0-9.5mm | 0.3-12m |
| 12" | 323.8mm | 6.0-15.0mm | 1.0-12m |
Pre-galvanized pipe is made of hot dipped galvanized steel strip directly. Used for low pressure liquid delivery, such as water, gas, and oil, fence, conduit, greenhouse etc.
Steel Grade: Q195, Q235, S235JR, STK400, GR. A, GR. B














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Dactron Pipe