With the continuous development of industry, seamless pipe is increasingly used in various fields, and their processing technology is also receiving increasing attention. Seamless pipes have the advantages of hollow cross-section, uniform wall thickness, smooth inner and outer surfaces, and stable quality. They are widely used in the transmission of fluids such as oil, natural gas, and water, as well as structural parts, mechanical parts, and other fields. The following will introduce the 6 major processing technologies for seamless steel pipes for structures.

Cold drawing
Cold drawing processing is a commonly used method in the processing of seamless pipes. By stretching and compressing the steel pipe through a die, the diameter of the steel pipe is reduced, the wall thickness is reduced, and the length is increased. Cold drawing processing can produce seamless steel pipes with high precision, uniform wall thickness, and smooth surface, which are widely used in the fields of petroleum, chemical industry, construction, etc.

Hot rolling
Hot rolling processing is to heat the steel pipe to a high temperature state, and then roll it through a die to deform the steel pipe, reduce its size, and reduce its wall thickness. Hot rolling processing can produce large-diameter, high-strength, high-temperature-resistant seamless pipes, which are widely used in boilers, pressure vessels, oil and gas, and other fields.

Cold rolling
Cold rolling is the process of rolling steel pipes at room temperature, which deforms, reduces the size and reduces the wall thickness of steel pipes through multiple rolling passes. Cold rolling can produce seamless pipes with high precision, smooth surface and uniform wall thickness, which are widely used in automobile, machinery manufacturing and other fields.

Extrusion
Extrusion is the process of adding heated billets to the extruder, and under the action of the extrusion rod, the billets flow out through the die to form pipes of the required shape and size. Extrusion can produce seamless pipes with small diameter, thin wall thickness and high precision, which are widely used in aerospace, automobile manufacturing and other fields.

Straightening
Straightening is the process of straightening the manufactured seamless pipes to achieve the specified straightness and flatness. Straightening can improve the quality and stability of seamless pipes, making them less prone to bending and deformation during transportation and use. Straightening is widely used in the manufacturing and processing of various seamless pipes.

Polishing
Polishing is the process of treating the surface of seamless steel pipes to improve their surface finish and aesthetics. Polishing can be done by mechanical polishing, chemical polishing, and electrochemical polishing. The appropriate polishing method should be selected according to different application requirements. Polishing can improve the corrosion resistance and service life of seamless pipes, making them more widely used in petrochemical, food, and medicine.

Summary
The above are the 6 major processing technologies for seamless steel pipes for structures. These technologies can be selected and used according to different requirements and material properties to produce high-quality and high-performance seamless steel pipes. With the continuous development of science and technology, these processing technologies are also constantly improving and perfecting, providing a broader space for the application of seamless steel pipes.