Precision seamless pipe is a high-precision steel pipe material processed by cold drawing or hot rolling. Due to the characteristics of no oxide layer on the inner and outer walls of the precision steel pipe, no leakage under high pressure, high precision, high finish, no deformation in cold bending, flaring, flattening and no cracks, etc. Therefore, it is mainly used to produce pneumatic or hydraulic components, such as cylinders or oil cylinders. It can be seamless pipe or welded pipe The chemical composition of precision steel pipe

The pre-finishing welding process technology is the most advanced tube-making process technology in the spiral submerged arc welded pipe (SSAW pipe). Its advantage is to effectively solve the problem of mutual interference between forming and welding, give full play to the respective advantages of forming and welding, and realize the organic combination of high-speed forming and low-speed welding.

There are mechanical, chemical and electrochemical methods for removing scale from stainless steel pipes. Due to the complexity of the scale composition of stainless steel pipes, it is not easy to remove the scale on the surface and make the surface highly clear and smooth. The removal of scale on stainless steel welded pipes generally takes two steps, one is pretreatment, and the other is ash removal.

Before the stainless steel welded pipe is processed and welded, the rust, oil, water, paint, etc. that are harmful to welding should be completely removed, and the welding rod suitable for the steel type should be selected. The processing time of stainless steel welded pipe is shorter than that of carbon steel spot welding, and stainless steel welded pipe brush should be used to remove welding slag. After welding, in order to prevent local corrosion or strength reduction, the surface should be ground or cleaned.

High-pressure boiler tubes are a type of boiler tubes and belong to the category of seamless steel tubes. The manufacturing method is the same as that of the seamless pipe, but there are strict requirements on the steel type used in the manufacture of the steel pipe.

​​​​​​​octg pipe is an important way of energy protection. During the anticorrosion construction process of oil and gas pipelines, the surface treatment of LSAW pipes is one of the key factors determining the service life of pipeline anticorrosion. It is the premise of whether the anticorrosion layer can be firmly combined with the steel pipe.