News

Preheating refers to heating the workpiece to be welded to above room temperature before or during welding. According to the application standard of the material, the current specification usually req...

The hydrostatic pressure test of oil casing pipe is an indispensable part of the steel pipe manufacturing process. Its function is to detect the leakage resistance of the steel pipe under the standard...

Oil casing drilling is also called percussion drilling. The wire rope is used to send the drill bit to the bottom of the well. The beam mechanism is driven by the driving force to move one end of the ...

After removing the root of the weld, double-sided weldments should be inspected. When using the oxyacetylene flame to cut the welding fixture on the alloy pipe that has a tendency to harden, defects i...

Characteristics of straight seam steel pipe: Straight seam steel pipe generally refers to the use of a special process to carry out anti-corrosion treatment on ordinary steel pipes, so that the anti-...

Advantages of LSAW steel pipe in steel structure design are as follows:  (1) The cross section of the straight seam steel pipe has good geometric characteristics. The wall of the pipe is generall...