Selection of welding methods for seamless pipes

The selection of seamless pipe welding method should be based on the material and wall thickness of the seamless pipe. Due to different welding methods, they have different arc heat and arc force, and different welding methods have different characteristics. For example, the characteristics of tungsten arc welding are low current density, stable arc combustion, good weld formation, especially suitable for thin plate welding, while thick plate welding is not a choice; The characteristics of plasma arc are high arc column temperature, high energy density, good straightness of plasma arc, wide adjustment range of rigidity and flexibility, stable operation, but more complex operation; Submerged arc welding has the characteristics of deep penetration ability and high welding wire deposition efficiency, which can greatly improve welding speed and lower welding costs, but the labor conditions and environment are relatively poor. It can be seen that different welding methods have different capabilities and operating costs. Based on the material and wall thickness of seamless pipes, selecting a reasonable welding method is a very important task to ensure welding quality, improve productivity, and reduce costs.