spiral steel pipes

       Spiral steel pipe is a spiral seam steel pipe made of strip coil plate, extruded at constant temperature and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe will send the strip into the welding pipe set. After being rolled by a multi-channel roll, the strip gradually rolls up to form a circular tube blank with an open gap. The pressure of the extrusion roll is adjusted so that the weld gap is controlled within 1~3mm and the two ends of the welding joint are flush.

        Spiral steel pipe is a kind of spiral seam steel pipe, which is welded by automatic double wire double side submerged arc welding process with strip steel coil as raw material, often warm extrusion forming. The spiral steel pipe will send the strip steel into the welded pipe unit, and the strip steel will be rolled up gradually by multiple rollers to form a round billet with open gap. The reduction of the extrusion roller will be adjusted to control the weld gap at 1 ~ 3mm, and the two ends of the weld joint will be leveled. Spiral steel 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. Used for liquid transportation: water supply and drainage. For gas transmission: gas, steam, liquefied petroleum gas. Used for structure: piling pipe and bridge; Pipes for wharf, road, building structure, etc.

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