Spiral welded Pipe Pile is made by rolling a low-carbon carbon structural steel or a low-alloy structural steel strip into a tube blank at a certain spiral angle, then welding the pipe seam. Larger diameter steel tubes can be produced from narrower strips. SSAW Pipe Pile Compared with the straight seam welded pipe, it is flexible in operation and easy to change and adjust. Under the same pressure condition, the stress of the spiral weld is less than that of the straight seam, which is 75% to 90% of the straight seam welded pipe, so it can withstand large pressure. Compared with the straight seam welded pipe with the same outer diameter, the wall thickness can be reduced by 10% to 25% under the same pressure.