1)Galvanized steel tube 2)Outer diameter:10mm*20mm-200mm*400mm 3)The thickness: ... -12mm 4)standard:BS1387,ASTM,GB,DIN,API Galvanized steel tube for hot dip,pre and electric Products Details :1) Round ... ,Q235,Q345,SS400,S235JR,X42,X46,X52,X60,X65,X70If you are interested in the product of above,please feel free ... contact us , we will do our best to help you! Galvanized steel tube