The welding of the straight seam steel pipe adopts the milling method. In addition to traditional JCO and UO technologies, some manufacturers have adopted more advanced progressive forming (PFP) technology, roll bending forming (RBE) technology. According to the production process, straight seam steel pipes can be divided into electric resistance welded pipes (ERW pipes) and submerged arc welded straight seam steel pipes (LSAW steel pipes).

The condition that the seamless steel pipe is damaged by the organic chemical or photoelectric catalytic effect of the substance is called corrosion.

The steel-plastic composite pipe is made of seamless steel pipe or hot-dip galvanized steel pipe as the base, and the inner wall (the outer wall can also be used when needed) is coated with plastic by powder melt spraying technology, and has excellent performance.

Resistance welding is a method of applying pressure through electrodes after combining the workpieces, and using electric current through the contact surface of the joint and the resistance heat generated in the adjacent area to weld.

Industrial control of cold drawn precision seamless steel pipe production includes condition control such as die design, annealing, pickling, lubrication, etc. At the same time, capillary quality inspection and maintenance work should also be carried out.

The process properties of SSAW steel pipe include bending, surface quality, size, shape, weight and allowable deviation