... of sizes of steel pipes, including spiral steel pipe, schedule 40 galvanized steel pipe , rigid galvanized steel pipe ,electric galvanized pipe, pre-galvanized pipe, square and rectangular steel pipe, welded steel pipe, ERW pipe, etc. These ... ) Material: Q215, Q235, Q1952) Standards: GB/T3091-2001, BS1387-1985, ASTM A53, EN102193) Use: Used for low pressure liquids conveyance, such ...