The main processing methods for
longitudinally submerged arc welding pipe are:
Forged steel: A pressure processing method that uses the reciprocating impact of a forging hammer or the pressure of a press to change the billet to the shape and size we need.
Extrusion: It is a steel processing method in which a metal is placed in a sealed extrusion, and pressure is applied at one end to extrude the metal from a prescribed die hole to obtain a finished product having the same shape and size, which is mostly used for producing non-ferrous metal steel. .
Rolling: A method of pressure processing in which a steel metal billet is passed through a gap (various shapes) of a pair of rotating rolls, and the material cross section is reduced by the compression of the rolls, and the thick-walled straight-slit steel pipe is increased in degree.
Pulling steel: It is a processing method in which the rolled metal blank (type, tube, product, etc.) is pulled through the die hole to reduce the length of the section and is mostly used for cold working.
