How to handle the weld seam of double-sided submerged arc welding spiral seam welded steel pipe? If the gap between the double-sided submerged arc welding spiral seam welded steel pipes is too large, it will cause a reduction in proximity effect, insufficient eddy current heat, and poor intergranular bonding of the weld, resulting in incomplete fusion or cracking. If the gap between the double-sided submerged arc welding spiral seam welded steel pipes is too small, it will cause an increase in proximity effect, excessive welding heat, and result in weld burnout;