With the rapid development of high-quality steel strip continuous rolling, advances in welding and inspection technology, and continuous improvement in welding quality, the application of API 5L Gr.B PSL1 welded pipe is increasing. Welding height is a very important detail in the production of API 5L Gr.B PSL1 welded steel tubes. There is a lot of danger in the high welding height of the API 5L Gr.B PSL1 welded pipe.
The stress concentration of the butt joint is mainly caused by the welding height of the API 5L Gr.B PSL1 welded pipe. The stress at the butt weld is greatest. The higher the welding height, the more severe the stress concentration and the lower the strength of the welded joint. After welding, the cutting height is higher than the cutting height of the base metal, so that stress concentration can be reduced.
Large, high internal welds increase the energy loss of the transport medium. If the inner surface of the immersed API 5L Gr.B PSL1 welded pipe is not treated with anti-corrosion treatment, the remaining size of the inner weld is large, and the frictional resistance of the conveying medium is large, so the energy consumption of the pipe will increase.
