Large diameter ERW steel pipe is widely used in aviation, aerospace, energy, electronics, automobile, light industry and other industrial sectors, and is one of the important welding processes.


The main processing methods of large diameter ERW steel pipe are as follows:
Forging steel: Using hammer reciprocating impact force or press to change billet into shape and size, we need a pressure processing method.


Extrusion: The steel is extruded in the closed steel and pressed at one end to make the metal holes in the die. The non-ferrous metal products, steel, are produced by the finished product processing method of forming and size.


Rolling: By making the steel pass through the clearance of a pair of rotating rolls (various shapes), by compressing the rolls to reduce the cross-section of the material, and by increasing the length to process the steel.


Wire drawing steel: It is a method of rolling metal blanks (models, pipes, products, etc.) into cross sections through die holes to reduce the processing length, mostly for cold processing. ...