... ,Q235,Q345 3.Out Diameter: 1/2 inchaa8 inch us galvanized steel pipe1.Standard: ASTMA53,BS1387-1985,GB/T3091-2001,EN39 ... . Usage: It is widely used in the construction, pipe of industrial,water pipe, plastic-steel doors and windows, fence equipment,telecommunication tubes ... :Andrew Zhu Tel:+86-22-26660421Mobile:+86-13032215702Product :Packing: us galvanized steel pipe