We supply high-quality hot-dip galvanized round steel pipe (GI pipe) sourced from certified Chinese manufacturers. Our products fully comply with international standards including GB/T 3091-2015, ASTM A53, EN 10255, and JIS G3444. As a reliable supplier of galvanized steel pipe, we offer products that meet strict quality requirements for global projects.
We offer the following core specifications:
- Nominal diameter range: DN15 (1/2″) to DN200 (8″)
- Material grades: Q195, Q235B, Q355B; ASTM A53 Gr.A/B/C; S235JR, S355JR
- Manufacturing process: ERW electric resistance welded pipe
You get flexible specifications to meet diverse project needs:
- Standard fixed length: 6 m (customizable to 5.8 m or 12 m)
- Outer diameter tolerance: ±0.3 mm (DN15–DN100); ±0.5 mm (DN125–DN200)
- Wall thickness tolerance: ±8%
- Zinc coating weight: 300–400 g/m² (average)
- Zinc layer thickness: 85–110 μm (average); minimum local thickness ≥70 μm
Our galvanized steel pipe is widely used in water supply and drainage systems, low-pressure gas transmission, building structures, scaffolding, road guardrails, greenhouse frames, and municipal engineering projects. They deliver stable performance in various climates, including humid and coastal environments.
We provide professional OEM/ODM customization services for size, zinc coating thickness, and packaging to match your project needs.
If you are also interested in related building materials, you can check our [Steel Sheet] series.
Standard seaworthy packaging (steel strapping + plastic end caps + waterproof kraft paper) keeps goods safe during transport.
(For further information regarding the parameters, please do not hesitate to contact us.)
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