... :6-830mm 3)Thickness:0.5-40mm 4)5t Stainless steel pipe and tube(square)1)ASTM/ASME,GB,DIN,JIS,T14975 ... for boiler and heat exchange High precision, smooth surface, good corrosion resisting and high tempera... D.Qingdao sino steel co.,ltd was one large steel ... of equality,mutual benefit and win-win,greatly supporting the healthy and rapid development of China's iron and steel industry. If you are ...