Usage requirements of double-sided submerged arc welding spiral steel pipe

1. In the process of ssaw steel pipe forming, the steel plate is uniformly deformed, the residual stress is small, and the surface is free of scratches. The processed steel pipe has greater flexibility in the size range of steel pipe diameter and wall thickness, especially in the production of high steel grade thick-walled steel pipe, especially in large-caliber thick-walled pipe, which has other advantages unmatched by other processes and can be satisfied. Users have more requirements on steel pipe specifications;

2. The process of internal and external welding (precision welding) after pre-welding can be used to achieve welding. It is not easy to have defects such as misalignment, welding deviation and incomplete penetration, and it is easy to control the welding quality.

3, The overall mechanical expansion, can effectively improve the dimensional accuracy of the steel pipe, and improve the distribution of the internal stress of the steel pipe, so as to avoid damage due to stress corrosion, and at the same time conducive to the on-site welding construction;

4. Conduct 9 quality inspections on the steel pipe to ensure that the entire process of steel pipe production is under effective inspection and monitoring, which effectively ensures the quality of SAW pipe products;

5. The entire equipment of the entire production line has the function of networking with the computer data acquisition system, realizing the data transmission in real time, and the central control room controls the technical parameters and quality indicators in the production process.