Hot Galvanized Pipe Product name: hot galvanized steel pipeStandard: GB/T3091 – 2001, A53, EN10255, DIN2440, BS1387 etc.Materials: Q235, Q345B, Gr.B, S195T, ST35 etc.Outer diameter: 1/4″ – 12″ .Wall thickness: Sch5 – Sch80(1.0mm – 12mm).Length: 2m – 12m.Application: construction, fire control, pipeline etc.