Carbon Steel Product, Steel Rebar, Galvanized Steel Products manufacturer / supplier in China, offering 10# 20# 35# ASTM AISI GB JIS A53 A106 A333 A335 ERW Carbon Steel Pipes for Gas Heating Tube, ASTM Sch10 DN80 A53 A106 Grb 6m 12m Length Carbon Seamless Steel Pipe and Tube, 1mm 4mm Sch10 A106 A53 BS 6323 Carbon Precision Steel Seamless Round Tube and so on.