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The problems and defects of ERW steel pipes are related to raw materials, production methods, process conditions, equipment status and personnel. Product defects that occur in the production process d...

Seamless steel pipes are much higher than welded pipes in terms of corrosion resistance and pressure and high temperature resistance. With the improvement of welded pipe manufacturing process, mechani...

Stainless steel pipe is a hollow long round steel, which is widely used in petroleum, chemical, medical, food, light industry, machinery and instrumentation and other industrial transportation pipelin...

Causes of wrong edges of large-diameter spiral steel pipes (SSAW): In the production of large-diameter spiral steel pipes, misalignment occurs from time to time, and there are many influencing fact...

Piling spiral steel pipe（SSAW） is a spiral seam steel pipe made of strip steel coils as raw materials, often extruded and formed by automatic double-wire double-sided submerged arc welding. So, what i...

Pickling passivation is a chemical reaction. First, the oxide scale and rust on the surface of the steel can be removed by the pickling solution, and the passivation process can be completed at the sa...