Main process characteristics of straight seam welded steel pipes

1、 Straight seam welded steel pipes undergo uniform deformation throughout the entire forming process, with minimal residual stress and no scratches on the surface. The spiral steel pipes produced and processed have great coordination ability in the specifications and models of straight and wall thickness, especially in the production and manufacturing of high-end thick walled pipes, especially in small and medium-sized straight and thick walled pipes, which have unparalleled technical advantages and can meet a large number of customer requirements for the specifications and models of spiral steel pipes. 

2、 By using excellent positive and negative arc welding techniques, welding can be maintained in excellent areas without easily causing edge displacement, welding errors, incomplete weld beads, and other defects. The welding quality is easy to control. 

3、 The technical characteristics and features of the production and processing technology of straight seam welded steel pipes, as well as the characteristics, features, and methods of product quality inspection, are the fourth aspect of conducting 100% product quality inspection on straight seam welded steel pipes, reasonably inspecting the production process of steel pipes, and ensuring product quality reasonably. 

4、 All the machines and equipment on the production line are connected to the computer data acquisition system to maintain real-time data transmission. The control room is responsible for manipulating performance parameters in the production process.

At the welding process level, the welding process of straight seam welded steel pipes is the same as that of straight seam welded steel pipes. However, there are inevitably many T-shaped welds in straight seam welded steel pipes, which greatly increases the probability of welding defects. The welding internal stress at the T-shaped weld is high, and the weld metal material is usually in three-dimensional stress conditions, increasing the probability of cracks. In addition, according to the technical specifications of arc welding processing technology, each weld should have an arc starting point and an arc extinguishing point. However, this standard cannot be achieved for each straight seam welded pipe when welding the circumferential seam, so there will be a large number of welding defects at the arc extinguishing point.