Handan Zhengda Steel Pipe Co.,Ltd. Square and Rectangular Steel Pipe Size Square: 20x20-300*300mm Rectangular: 40*20-400*200mm Wall thickness: 0.7-17.75mm Length: 4.5-13m Zinc coating: galvanized: 200-400g/m2 Standard: GB/T 6728, ASTM A500, EN 10219 Material: Q195, Q235, Q215 Technique: ERW, welded, galvanized, hot dipped Package: in bundles with water plastic proof wrapped or as per customer's requirements Shipping Term: FOB, CFR, CIF Payment Term: T/T, L/C Surface: galvanized or as per customer's requirements Quality Grade: first grade Certification: ISO 9001:2008,ISO14001-2004,OHSAS18001-2007; API, SGS Usage: transportation oil, natural gas, gasoline and liquid objects, scaffolding pipe, building material pipe, furniture tube, low pressure fluid tube Main Market: Mid East, South America, South Asia, Africa, Southeast Asia, Northern Europe, Western Europe We can do special orders as customer's requirements Advantage:good quality,competitive price,on-time delivery,efficient after service Rectangular Pipe Size Other Main Products: ERW Pipe,Hot-dipped Galvanized Steel Pipe,Spiral Welded Pipe,Steel-plastic Composite Pipe. Other Main Products: ERW Pipe,Hot-dipped Galvanized Steel Pipe,Spiral Welded Pipe,Steel-plastic Composite Pipe.