... Grade: Q235A, Q235B, Q345API 5L: GR A, GR B, X42,X46, X56, X60,X65,X70, X80ASTM A252 GR 1 ... , Grade 50EN: S275, S275JR, S355JRH, S355J2H 5.Standard: API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, GB/T9711 ... pipes can be supplied according to GB, ASTM, API, DIN, JIS standards, the factory is located in ... : lindayuan1124Mobile: +86-15226605670 albaba express erw api 5l gr.b spiral welded steel pipe