Yearly Archives: 2022

Seamless steel pipes are widely used in mechanical manufacturing, because the mechanical performance of this steel is very good. But because it is medium carbon steel, the quenching performance is not...

Seamless steel pipes for boilers are high-quality carbon steel, alloy steel and stainless heat-resistant steel seamless steel pipes used to manufacture high-pressure and above-pressure water-tube boil...

The submerged arc welding process(SAW) is suitable for the requirements of heavy industrial applications such as pipelines, pressure vessels and tanks, locomotive manufacturing, heavy construction, an...

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...

Straight seam steel pipe refers to a steel pipe whose weld seam is parallel to the length of the steel pipe. Its production process is relatively simple. The strength of spiral steel pipe is generally...