In the process of producing straight seam steel pipes, the temperature must be strictly controlled, to ensure the reliability of welding. If the temperature is too low, it may cause the welding position to fail to reach the temperature required for welding. When most of the metal structure is still

Causes and preventive measures of single-sided undercut:In the production process of submerged arc welded steel pipes, especially in high-speed welding, undercut has become the main defect in the production process of spiral submerged arc welded steel pipes. The defect of undercut mainly has the fol

Here are the advantages of the large-diameter stainless steel pipe:1. Welded steel pipes are produced continuously online. The thicker the wall thickness, the greater the investment in the unit and welding equipment, and the less economical and practical it is. The thinner the wall thickness, the co

1. The oil screen is processed by a J55 or N80 oil casing body, which has high strength and is not easy to deform2. The verticality of the cutting edge is good, the cutting edge is smooth, with no burr, and the cutting seam is even.3. Large flow area, 27/8" screen pipe with 300 slots/1.5m, flow area