Hot rolled spiral steel pipe
Hot-rolled spiral steel pipe is formed in a high-temperature environment, and its organizational structure and mechanical properties have been strengthened. The surface of this kind of steel pipe is relatively smooth and is often used in mechanical structures and some high-pressure environments, such as petroleum, chemical industry, marine engineering, etc. The advantages of hot-rolled spiral steel pipes are their lower price and faster production cycle. However, hot-rolled spiral steel pipes are prone to cracks during bending and cutting, so they require higher processing technology.
In contrast, cold-rolled spiral steel pipes are processed in a lower temperature environment. Cold-rolled spiral steel pipes have better surface quality and higher dimensional accuracy, so they are often used in situations that have higher requirements for surface smoothness and dimensional accuracy, such as building structures, water pipes, gas transportation, etc. Another advantage of cold-rolled spiral steel pipe is its strong corrosion resistance and wear resistance, so it is widely used in some outdoor projects. However, the production cost of cold-rolled spiral steel pipes is higher and the production cycle is longer.
1. Price and service life: Due to different production processes, the price of cold-rolled spiral steel pipes is usually higher than that of hot-rolled spiral steel pipes. However, due to its high precision and excellent corrosion resistance, cold-rolled spiral steel pipes tend to have a longer service life.
2. Surface quality: The surface of hot-rolled spiral steel pipe is rough, while the surface quality of cold-rolled spiral steel pipe is better. This directly affects the use effect of steel pipes, such as friction coefficient, corrosion resistance, etc.
3. Scope of application: Hot-rolled spiral steel pipes are suitable for projects with higher pressure, such as petroleum, chemical industry, marine engineering, etc.; while cold-rolled spiral steel pipes are suitable for projects with higher requirements for surface smoothness and dimensional accuracy.
