Welded pipe production is the essence of cold, hot-rolled strip steel coil or plate with different methods of forming, and then use electric heating methods make edge heat welding temperature, and pressure welded  Or is heated to melting temperature makes metal fusion weld.

   Straight seam welded steel pipe connection type is characteristic of the whole production process of mechanization, high automation level, continuous production, productivity is high.This method occupies the important position in the welded pipe production.Its adapt to a wide range, and its outer diameter for ∅ 6 ~ 4000 mm, thickness 0.15 ~ 426 mm, continuous straight seam welding method is especially suitable for outer diameter ∅ 6 ~ 426 mm, thickness 0.5 ~ 14.3 mm of medium and small electric welding tube production.

     Welded pipe material is more widely than furnace welded pipe, not only can produce carbon steel pipe, also can produce alloy steel pipe.