The production process of straight seam welded pipe is simple, the production efficiency is high, the cost is low, and the development is rapid. The strength of the spiral welded pipe is generally higher than that of the straight seam welded pipe, and the welded pipe with a larger diameter can be pr

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 corresponding decrease in its input-output ratio.2. The process of la

There are many reasons for steel pipeline leakage, which can be mainly divided into three categories: corrosion perforation, fatigue cracking, and external force damage.Although corrosion control measures can substantially slow corrosion, it does not prevent it. When the cathodic protection is insuf

1. StrengthDeformation: The deformation of the material (steel pipe) is divided into two types: elastic deformation (the original shape can be restored when the external force is removed) and plastic deformation (the original shape cannot be restored when the external force is removed, and the shape