Hot Dip Galvanized Steel Square Pipe Standard: GB/T6278-2002, ASTM A53, GB6728-86… Material: 10#, 20#, Q195, Q215, Q235… Size: 25*25mm-400*400mm Thickness: 0.6mm-16mm Zinc coating: 60-260g/m2. Certificate: ISO9001:2000 Origin: Tangshan, Hebei Province, China. Packing: In bundles with metal strip wraping or as customers’ requirements. Delivery time: 25-30days. Payment terms: TT or LC at sight. Usage: Construction, bridge, highway, windows od model steel door, building materials, fence, and so on.
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