Spiral seam submerged arc welded steel pipes are formed by bending the strip steel in a spiral shape, and welding the inner and outer seams using automatic submerged arc welding to produce spiral seam steel pipes. There are two points to pay attention to in the production quality of spiral seam submerged arc welded steel pipes: first, the surface layer is usually inspected for cracks, stuttering, and folding. The surface layer of spiral seam submerged arc welded steel pipes can have protrusions, but there are limited standards for this protrusion.