How To Prevent Straight Seam Steel Pipes From Breaking?

Straight Seam Steel Pipe is a steel pipe made of straight-line welding of steel plates or steel coils. Unlike LSAW (Longitudinal Submerged Arc Welded) steel pipes, the welding of straight seam steel pipes is performed on the edge of the steel plate or steel coil, not on the inside of the pipe. The production process of straight seam steel pipe is simple, the production efficiency is high, the cost is low, and the development is rapid. But straight seam steel pipes often have problems with breakage. This article will introduce how to prevent straight seam steel pipes from breaking. I hope the following content will be helpful to you.

Methods To Avoid Straight Seam Steel Pipe Breakage:

Manufacturers of longitudinally welded pipe often alter its properties by adding alloys to the material. Stress annealing is required after cold drawing to reduce the residual stress of the material and prevent the straight seam welded pipe from breaking. At present, straight seam welded pipe manufacturers use cold drawing deformation to increase the strength of the metal, but this is at the expense of the shape and toughness of the metal. Cold drawn straight seam welded pipes are based on the market, with high dimensional accuracy and high strength. It is necessary to ensure that the deformation is within the range to reduce the adverse impact on the material. If the deformation of the straight seam welded pipe is small, it cannot meet the flatness and dimensional accuracy requirements of the parts, nor can it meet the strength requirements of the parts. If the deformation is too large, the plasticity and toughness of the straight seam welded pipe manufacturer will be greatly reduced, and the grains will be too long. Fiber structure cannot be formed. The metal has significant anisotropy. The axial direction of the cold drawn straight seam welded pipe is parallel to the direction of grain elongation. The strength of cold drawn straight seam welded pipe is perpendicular to the direction of grain elongation, but the strength is reduced. The stress of the hydraulic cylinder exists in the radial direction of the straight seam welded pipe, so the deformation is too large and the performance of the cold drawn pipe cannot be fully exerted.