Carbon Steel Galvanized Steel Pipe
A carbon steel galvanized pipe to ASTM A53, EN 10255, hot-dipped zinc-coated, welded and seamless, for fire sprinkler, water, and gas services.
Product Introduction
· ASTM A53/A53M: Standard Specification for Black and Hot-Dipped Zinc-Coated Welded & Seamless Carbon Steel PipeASTM Inter...
· EN 10255: Non-alloy steel tubes for heating, water and gas services
· BS 1387: British specification for screwed and socketed steel tubes
· JIS G3442 / JIS G3444: Japanese standard for galvanized steel pipes
· ISO 1461: Hot-dip galvanized coatings – specifications and test methods
· API 5L: Line pipe for petroleum and natural gas industries
· ASME B36.10M: Welded and seamless wrought steel pipe dimensions
· GB/T 3091: Welded steel pipes for low-pressure fluid conveyance
Base Carbon Steel Grades
- Q195, Q215, Q235B, Q355B (Chinese grades)
- ASTM A53 Gr.A / Gr.B, A106 Gr.B
- S235JR, S275JR, S355JR (European grades)
- STK400, STK500 (Japanese grades)
Coating
- Hot-dip galvanized zinc coating: typically 85μm+, 200–600 g/m²
- Pre-galvanized: thinner zinc layer for general structural use
- Process: Hot-dip galvanizing (main type), electro-galvanizing (not recommended for fluid transport)
| NPS (Inch) | DN | Outer Diameter (mm) | Wall Thickness (mm) | Common Length |
|---|---|---|---|---|
| 1/2" | DN15 | 21.3 | 2.77 | 6m / custom |
| 3/4" | DN20 | 26.7 | 2.87 | 6m / custom |
| 1" | DN25 | 33.4 | 3.38 | 6m / custom |
| 1 1/4" | DN32 | 42.2 | 3.56 | 6m / custom |
| 1 1/2" | DN40 | 48.3 | 3.68 | 6m / custom |
| 2" | DN50 | 60.3 | 3.91 | 6m / custom |
| 3" | DN80 | 88.9 | 5.49 | 6m / custom |
| 4" | DN100 | 114.3 | 6.02 | 6m / custom |