Manufacturing and Sales: Seamless steel pipes, Spiral steel pipes, Welded steel pipes, Oil casing pipes, Hot-expanded steel pipes, Polyurethane insulated steel pipes, Steel-clad steel insulated pipes, 3PE coated steel pipes, TPEP coated steel pipes, Coating plastic steel pipes, Power line steel pipes, IPN8710 coated steel pipes, Epoxy coal tar coated steel pipes, Epoxy resin coated steel pipes, 036-1-2 coated steel pipes, Zinc-rich coated steel pipes, Plastic-lined pipes, Support and hanger, Pipe fittings, Sacrificial anode cathodic corrosion-insulated and heat-insulated pipe fittings. (As required by laws and regulations, please refer to the approval of the business scope.)