... of sizes of steel pipes, including spiral steel pipe, hot dip galvanized steel pipe , large diameter galvanized welded steel pipe ,electric ... pipe, square and rectangular steel pipe, welded steel pipe, ERW pipe, etc. These pipes can apply in chemical industry, machinery, ... /T3091-2001, BS1387-1985, ASTM A53, EN102193) Use: Used for low pressure liquids conveyance, such as water, gas, and construction4 ...