Product News
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Two Possible Causes of Surface Defects in Industrial Spiral Steel Pipes
There are two possibilities for the formation of surface defects in spiral steel pipes: one is that the material itself lacks plasticity during deformation, leading to cracks and outward folds; the other is that surface oxidation causes surface defects, which are amplified into cracks and outward...Read more -
Methods for Preheating Deformation of Industrial Straight Seam Steel Pipes
1. Rational Material Selection for Straight Seam Steel Pipes. For precision and complex molds, high-quality micro-deformation mold steel should be selected. For mold steel with severe carbide segregation, proper casting and tempering heat treatment should be performed. For larger mold steels or t...Read more -
Technical Requirements of Steel Bending Pipes and Analysis of Factors Affecting Steel Elbow Quality
Steel bending pipes are manufactured step-by-step into finished products. Throughout the production process, the steel pipes must be bent, and the bending technique requires specific skills, with varying degrees of bending. What are the technical requirements used in this production process? 1. O...Read more -
Forming Methods and Connection Types of Large-Diameter Steel Pipes
Currently, the main production processes for large-diameter steel pipes in my country are hot-rolled large-diameter steel pipes and hot-expanded diameter steel pipes. The largest specifications for hot-expanded seamless steel pipes are 325mm-1220mm, with a thickness of 120mm. Hot-expanded seamles...Read more -
Comparison of Plastic-Coated Steel Pipes and 3PE Anti-corrosion Steel Pipes
Plastic-coated steel pipes, also known as plastic-coated steel pipes, steel-plastic composite pipes, or plastic-coated composite steel pipes, use steel pipes as the base material and PE (modified polyethylene) or EP (epoxy resin) as the main anti-corrosion material through hot-dip plastic coating...Read more -
Quenching Technology for Straight Seam Welded Steel Pipes
Surface quenching and tempering heat treatment of straight seam welded steel pipes is typically performed using induction heating or flame heating. The main technical parameters are surface hardness, local hardness, and effective hardened layer depth. Hardness testing can be conducted using a Vic...Read more