Application: Spiral pipe is mainly used in water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction. It is one of the 20 key products developed in China. For liquid transportation: water supply and drainage, sewage treatment engineering, mud transportation, marine water transportation. For gas transportation: gas, steam, liquefied petroleum gas. For structure: as pile driving pipe and bridge; for wharf, road, building structure, marine pile driving pipe, etc.