... ,EN39,BS1139 2. Materials: Q195,Q215,Q235,Q345 3.Out Diameter: 1/2 inchaa8 inch us galvanized steel pipe1.Standard: ASTMA53 ... /T3091-2001,EN39,BS11392. Materials: Q195,Q215,Q235,Q3453.Out Diameter: 1/2 inch—8 inch (OD 21.3mm—OD219mm)4 ... construction, pipe of industrial,water pipe, plastic-steel doors and windows, fence equipment,telecommunication tubes as well as greenhouse tubes for different planting ...