... :1.-114mm Application:Petroleum, gas water pipe, construction, 1,Name : Galvanized steel round pipe 2,Standard :GB, ASTM, JIS, DIN3,Certificatio: CE ... diameter: 10mm-114mm 6,Grade:Q195, Q235, Q345,etc 7,Welded line pipe:ERW8,Application:Petroleum, gas water pipe, construction, chemical ... .so our products are sold to all over the world. Galvanized steel pipe