8 Major Processing technology of carbon steel seamless pipe for structure

With the continuous development of industry, carbon steel seamless pipe (cs seamless pipe) is more and more widely used in various fields, and its processing technology is also receiving more and more attention. Carbon steel seamless pipe has the advantages of hollow cross-section, uniform wall thickness, smooth inner and outer surfaces, stable quality, etc. It is widely used in the transmission of fluids such as oil, natural gas, water, as well as structural parts, mechanical parts and other fields. This article will introduce the 8 major processing technologies of carbon steel seamless pipe for structure.

Cold processing:
Cold processing refers to a processing method that does not require heating treatment, usually using professional equipment such as pipe bending machines and pipe expanders. After cold processing, seamless steel pipes can obtain pipes of different angles and shapes, which are widely used and are a commonly used processing method.

1. Cold drawing processing

Cold drawing processing is a commonly used method in the processing of carbon steel seamless pipes. By stretching and compressing the steel pipe through the 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 petroleum, chemical industry, construction and other fields.

2. Cold rolling processing

Cold rolling is the process of rolling steel pipes at room temperature. Through multiple rolling passes, the steel pipes are deformed, reduced in size, and reduced in wall thickness. Cold rolling can produce seamless steel pipes with high precision, smooth surface, and uniform wall thickness, which are widely used in automobile, machinery manufacturing (mechanical tube) and other fields. However, it will also increase its processing difficulty and cost.

Note: When performing cold processing, it is necessary to select appropriate processing tools and angles according to actual needs. At the same time, attention should be paid to the safety of operators to avoid injuries caused by machine failure or improper operation.

Hot processing:
Hot processing refers to the process of processing seamless steel pipes at high temperatures, mainly including methods such as hot rolling and hot extrusion.

1. Hot rolling processing
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, and high-temperature resistant seamless steel pipes, which are widely used in boiler tubes, pressure vessels, oil and gas, and other fields. At the same time, it will also increase its processing difficulty and cost.

2. Hot extrusion processing

Extrusion processing is to add 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 desired shape and size. Extrusion processing can produce small-diameter, thin-walled, high-precision seamless steel pipes, which are widely used in aerospace, automobile manufacturing and other fields.

Note: During hot processing, it is necessary to control the heating temperature and time to ensure that the seamless steel pipe will not be excessively deformed or damaged; at the same time, attention should be paid to the safety of the operator to avoid heat splash or other safety accidents.

Other processing methods:

1. Forging
Forging refers to placing the carbon steel seamless pipe on a forging machine and hammering it into the specified size and shape. This method can improve the mechanical properties and toughness of the seamless steel pipe, but it will also reduce its dimensional accuracy and surface quality.

2. Straightening

Straightening is to straighten the manufactured carbon steel seamless pipe to achieve the specified straightness and straightness. Straightening can improve the quality and stability of the seamless steel pipe, making it less prone to bending and deformation during transportation and use. Straightening is widely used in the manufacturing and processing of various seamless steel pipes.

3. Cutting Processing
Seamless steel pipe cutting is a common processing method, which can be done manually or mechanically. Manual cutting usually uses a cutting knife or saw, which is simple to operate but inefficient; mechanical cutting can use a cutting machine, which is faster but requires professional equipment and operators.

4. Polishing
Polishing is to treat the surface of the carbon steel seamless pipe to improve its 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 extend the service life of the seamless steel pipe, making it more widely used in petrochemical, food and medicine and other fields.

Conclusion:

The 8 major processing technologies of structural carbon steel pipe (CS Pipe) include cold drawing, cold rolling, hot rolling, hot extrusion, straightening, cutting and polishing. These technologies can be selected and used according to different needs 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 carbon steel seamless steel pipes.

Read more: Seamless Pipe Raw Material or Schedule 80 carbon steel pipe