Detailed Product Description Product Name: galvanized steel pipeStandard: BS 1387:1985,GB/T3091-2001, ASTM A53, BS1387- ... : Q195,Q235,Q215,Q345Zinc 80g-350g/m2hot dipped galvanized steel pipe class 3, class 4, zinc coating is above 350g/m2. Packing:hexagonal bundle ... % LENGTH:-2%~+2% W.T:-10%~+12.5%Anti -corrosion and high temperature resistant All producation process are under the ISO9001 ...