According to the production standards for spiral seam double-sided submerged arc welded steel pipes, the main inspection/control items for spiral seam double-sided submerged arc welded steel pipes include: external dimensions: steel pipe outer diameter, wall thickness, ovality, curvature, and pipe end verticality. Length and appearance quality: judgment of weld seam excess height, misalignment, steel pipe surface, layering, inclusions, and weld seam defects.