Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, often warmly extruded, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe feeds the strip into the welded pipe unit. After rolling by multiple rollers, the strip is gradually rolled up to form a circular tube blank with an opening gap. 3mm, and make both ends of the welding joint flush.
We all know that many pipe fittings are made of steel pipes, especially elbows, but elbows are mainly made of straight seam steel pipes or cannot be processed with steel pipes. Spiral steel pipes are not acceptable, which mainly depends on the forming process.
Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, often warmly extruded, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe feeds the strip into the welded pipe unit. After rolling by multiple rollers, the strip is gradually rolled up to form a circular tube blank with an opening gap. 3mm, and make both ends of the welding joint flush.
Therefore, the welding seam of the spiral steel pipe is in a spiral shape during the forming process, and whether the elbow needs to be extruded by a press during processing, the spiral steel pipe cannot bear it, so the raw material selected for the elbow does not include the spiral steel pipe.