The forming methods of straight seam steel pipes include UOE forming method, roll forming method (CFE), CE forming, etc.

General boiler tubes are mainly used to make water wall tubes, boiling water tubes, superheated steam tubes, superheated steam tubes for locomotive boilers, large and small smoke tubes and arched brick tubes.

ERW steel pipe sizing refers to the use of special pass rolls to roll welded pipes to adjust round or special-shaped pipes with irregular sizes and shapes to finished pipes with regular shapes and sizes that meet the requirements of the standard.

ERW steel pipe is based on the principle of electromagnetic induction and the skin effect, proximity effect and eddy current heating effect of the electric charge, so that the steel at the edge of the weld is locally heated to a molten state, and the butt welding is achieved through the extrusion of intergranular bonding, so as to achieve The purpose of welding.

Fine and messy molds should be pre-heated to eliminate the residual stress that occurs during machining. For fine and messy molds, if the conditions permit, try to use vacuum heating quenching and cryogenic treatment after quenching.

The equipment can continuously roll seamless steel, Pilger rolled seamless steel, longitudinally welded pipe, spiral welded pipe, etc. It can be directly installed on the production line for online measurement, or installed on the flaw detection line and inspection line to measure the outer diameter of the finished pipe.