Galvanized welded pipes are divided into spiral welded pipes and straight seam welded steel pipes according to the forming process, and high-frequency resistance welding and submerged arc welding according to the welding process. Spiral welded pipes are all welded using submerged arc welding technology, while straight seam welded pipes are referred to as UOE for submerged arc welding and ERW for straight seam high-frequency resistance welding. Compared with submerged arc welding, high-frequency resistance welding galvanized welded pipe (ERW steel pipe) does not add any welding materials during the welding process, and the weld formation is not in a hot melting state. Only the weld metal undergoes a recrystallization process, so the chemical composition of the formed weld is completely consistent with that of the base metal. After the steel pipe is welded, it is annealed to produce cold working internal stress, and the welding internal stress is improved. Therefore, the comprehensive mechanical properties of ERW steel pipe are better. However, at present, the manufacturers represented by Shanghai Ellison and Guangdong Panyu the Pearl River Steel Pipe Factory only produce pipes under φ 355mm, and large diameter gas pipelines cannot be selected. Straight seam submerged arc welding (UOE steel pipe) uses post weld cold expansion process to expand the pipe, so the geometric dimensions of UOE steel pipe are relatively accurate. When using UOE galvanized welded pipe for docking, the quality of the docking is good, ensuring the welding quality. Through the expansion process, some internal stresses are eliminated to a certain extent. In addition, UOE steel pipes are welded using multi wire welding (three wire, four wire), which generates less linear energy during welding and has less impact on the heat affected zone of the base material. The welding wire after multi wire welding can eliminate the stress generated during welding, thereby improving the mechanical properties of the steel pipe. Compared with spiral welded pipes, straight seam submerged arc welded pipes have shorter weld lengths, which results in relatively fewer defects and impacts during welding. The raw material of straight seam pipes in high-pressure pipelines can achieve 100% ultrasonic testing of each steel plate, meeting the requirements of high-pressure pipelines for raw materials. However, despite the superior overall performance of UOE steel pipes compared to other steel pipes, their high price has deterred financially constrained users. Spiral steel pipe welds are distributed in a spiral shape. Generally speaking, the weld area of the steel pipe, including the heat affected zone of the weld, is the part where the mechanical properties of the steel pipe are poor. The maximum internal stress of the pressure pipeline is distributed along the axial direction. Spiral welded pipes avoid the weaker parts from the direction of the maximum internal stress, thereby improving the performance of the steel pipe. In addition, the formation of spiral steel pipe welds and the height of weld reinforcement have increased the difficulty of external anti-corrosion treatment, and gaps may form between the two sides of the weld. Currently, some manufacturers use the process of lateral winding and coating with three or two layers of PE to solve the anti-corrosion problem of spiral steel pipes. Steel pipes are divided into spiral welded pipes and straight seam welded pipes according to the forming process, and high-frequency resistance welding and submerged arc welding according to the welding process. Spiral welded pipes are all welded using submerged arc welding technology, while straight seam welded pipes are referred to as UOE for submerged arc welding and ERW for straight seam high-frequency resistance welding. High frequency resistance welded steel pipe (ERW steel pipe) does not add any welding materials during the welding process compared to submerged arc welding. The formation of the weld seam does not go through a hot melting state, and only the weld metal undergoes a recrystallization process. Therefore, the chemical composition of the formed weld seam is completely consistent with that of the base metal. After the steel pipe is welded, it is annealed to produce cold working internal stress, and the welding internal stress is improved. Therefore, the comprehensive mechanical properties of ERW steel pipe are better. However, at present, the manufacturers represented by Shanghai Ellison and Guangdong Panyu the Pearl River Steel Pipe Factory only produce pipes under φ 355mm, and large diameter gas pipelines cannot be selected. Straight seam submerged arc welding (UOE galvanized welded pipe) uses post weld cold expansion process to expand the pipe, so the geometric dimensions of UOE steel pipes are relatively accurate. When using UOE steel pipes for docking, the quality of the docking is good, ensuring the welding quality. Through the expansion process, some internal stresses are eliminated to a certain extent. In addition, UOE steel pipes are welded using multi wire welding (three wire, four wire), which generates less linear energy during welding and has less impact on the heat affected zone of the base material. The welding wire after multi wire welding can eliminate the stress generated during welding, thereby improving the mechanical properties of the steel pipe. Compared with spiral welded pipes, straight seam submerged arc welded pipes have shorter weld lengths, which results in relatively fewer defects and impacts during welding. The raw material of straight seam pipes in high-pressure pipelines can achieve 100% ultrasonic testing of each steel plate, meeting the requirements of high-pressure pipelines for raw materials. However, despite the superior overall performance of UOE steel pipes compared to other steel pipes, their high price has deterred financially constrained users. Spiral steel pipe welds are distributed in a spiral shape. Generally speaking, the weld area of the steel pipe, including the heat affected zone of the weld, is the part where the mechanical properties of the steel pipe are poor. The maximum internal stress of the pressure pipeline is distributed along the axial direction. Spiral welded pipes avoid the weaker parts from the direction of the maximum internal stress, thereby improving the performance of the steel pipe. In addition, the formation of spiral steel pipe welds and the height of weld reinforcement have increased the difficulty of external anti-corrosion treatment, and gaps may form between the two sides of the weld. Currently, some manufacturers use the process of lateral winding and coating with three or two layers of PE to solve the anti-corrosion problem of spiral steel pipes.