ERW Galvanized Steel Pipes 1) 1/2 inch - 8 inch 2) Steel grade: Q215-235 3) Longitudinal seam & round, square and rectangular Features:1) Material: Q195, Q215, Q235, Q3452) Standards: BS1387-1985, GB/T3091-20013) Zinc coating: MIN 35 MICROMETER4) Use: Used for low pressure liquids delivery, such as water, gas Hot dip galvanized steel pipe