Construction Pipe
1. Type:Round pipe,Website:, square pipe, rectangular pipe2. Name:HFW steel pipe, ERW black pipe, Straight seam welded pipe3. Characteristic:High frequency welding have good tube shape, uniform wall thickness, the inside and outside burr produced by welding slick by corresponding cutters, use nondestructive testing (NDT) methods to control of welding quality through leveling online , high degree of automation, low production cost. But wall thickness not more than 12 mm, tube diameter is generally not more than 610 mm; it is especially suitable for making pipe frame structure.ERW steel pipe product specification:O.D.: Ф21.3-Ф660mmLength: 3-12MW.T.:1.5-17.75mmMaterial: Q235A,Q235B,Q235C,Q345（16Mn）Product standards: API-5L/ASTMA53/ASTMA106 /GB/T3091-2001Annual output: 100000MT
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