1. Materials: Q195,Q215,Q235,Q345 2.Out Diameter: 1/2 inch- ... pipe1.Standard: ASTMA53,BS1387-1985,GB/T3091-2001,EN39,BS11392. Materials: Q195,Q215,Q235,Q3453.Out Diameter: 1/2 inch—8 ... planting and breeding business.Contact :Lisa Tianjin Liwei Iron&Steel Co.,Ltd Tel:+86-22-26660421Skype:liwlisa Galvanized Steel Pipe