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Hot Dip Galvanized Welded Pipe
Hot-dip galvanized pipe involves reacting molten metal with an iron matrix to produce an alloy layer, ensuring the matrix and coating are tightly combined. The process includes pickling to remove iron oxide, followed by cleaning in an aqueous solution of ammonium chloride or zinc chloride before entering the hot-dip galvanizing tank. This method offers uniform coating, strong adhesion, and an extended service life.
Available Types: Type F, Type E, and Type S (Grade A and Grade B). Standards include ASTM A53, A500, A252, A795, BS1387-85, GB/T3091, ISO R65, and API 5L.
| Product Specifications | |
|---|---|
| Material | Gr.A, Gr.B, Gr.C, S235, S275, S355, A36, SS400, Q195, Q235, Q345 |
| Outer Diameter | Square: 20*20mm~400*400mm Rectangular: 20*40mm~300*500mm |
| Wall Thickness | Round Pipe: 0.95~17.75mm Square/Rectangular: 1.7~16mm |
| Standards | ASTM A500, EN10219, EN10210, JIS 3466, GB/T 6728 |
| Certification | ISO 9001:2008, SGS, BV, CCIC, etc. |
| Surface Finish | Hot dipped galvanized (Zinc 220~260g/m2); Pre-Galvanized (30-150g/m2); Painted black/varnish; Oiled; Bare pipe |
| Pipe Ends | Plain end, Bevel end, Groove end, Flange joint, Threaded |
| Packing | OD ≥ 273mm: Loose packing, piece by piece. OD < 273mm: In hexagonal seaworthy bundles packed by steel strips. |
As a large-scale steel manufacturer, we specialize in producing straight welded pipes, spiral welded pipes, precision pipes, galvanized steel pipes, and prestressing steel strands. With over 20 years of expertise, our production process ensures high-quality standards and customer-oriented service.
