1.JIS G3141,GB Q235--Q345,ASTM A36,DIN STANDARD, UPN, UPE, etc 2.size : 50mm-400mm 3.zinc coating: ... Galvanized ChannelSpecification: JIS G3141,GB Q235--Q345,ASTM A36,DIN STANDARD, UPN, UPE, etcGrade:A36,SS400,Q235,Q345,ST37,ST52,ST275 ... Steel FlatSpecification: JIS G3141,GB Q235--Q345,ASTM A36,DIN STANDARD, UPN, UPE, S275JR etcGrade:A36,SS400,Q235,Q345,ST37,ST52 ...