Spiral steel pipes are made by steel coil, extrusion forming under the normal temperature, then taken the technology of double wire and double-faced submerged-arc welded.
Spiral steel pipe is mainly used in public waterworks, hydropower, and petrochemical industrial field, Common uses within these applications include the following:
For liquid transportation: water supply, drain water, petroleum transportation, etc.
For gas transmission: coal gas, steam, liquefied petroleum gas, gas etc.
For structure: piling, bridge, wharf, road, architectural structure, etc.