... ,acid resistance and corrosion resistance, so it is widely used in light industry,heavy industry,daily necessities and the decoration industry ... ,4Cr13.Tianjin development zone Ganghua Co.,Ltd which was established in 2006 had developed rapidly .At present, We export our products ... pipe, oil pipe, gas pipe, API pipe, alloy steel pipe, carbon steel pipe and so on.Steel sheetmaterialDC01,SPCC,ST12,HJ58 ...