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Seamless steel pipes continue to develop during the entire development trend, and the total number of manufacturers and commodities continues to increase. Due to the large number of seamless steel pipe factories and the relatively large total output in the sales market, many problems have appeared during the entire development trend, among which quality problems and many drawbacks are more typical. In addition, the overproduction of seamless steel pipes is serious, and the development trend of the intermediate field is relatively limited, and the future will also face huge challenges. In the process of the whole development trend, the following problems are mainly encountered:
In the appearance of steel pipes, the difference between seamless steel pipes and welded steel pipes is that the inner wall of the welded pipe has welding ribs, while the seamless steel pipe does not. The pressure of seamless pipes is higher. Welded pipes are generally around 10 MPa. Now welded pipe