What are the materials of seamless steel pipe?
Seamless steel pipe is an important material widely used in petroleum, chemical, energy, construction and other fields. The manufacturing process of seamless steel pipe is complex, and it needs to go through multiple processes such as hot rolling, cold drawing, and cold rolling, which gives it superior properties such as high strength, corrosion resistance, and high temperature resistance. However, due to the wide variety of application environments, the material of seamless steel pipes is also diverse. So what kinds of seamless steel pipe materials.
Carbon steel seamless steel pipe is the most common one on the market, the main components of carbon steel are iron, carbon and a small amount of silicon, manganese and other elements. According to the different carbon content, carbon steel can be divided into low carbon steel, medium carbon steel and high carbon steel. Low carbon steel has good toughness and ductility, and is often used to make various daily objects, such as pipelines and building structures. Medium carbon steel is widely used in the manufacture of mechanical parts because of its high hardness and strength. High carbon steel because of its high hardness, more used in the production of tools, molds and other high requirements of equipment.
Alloy steel seamless steel pipe is based on carbon steel, by adding various alloying elements (such as chromium, nickel, molybdenum) to improve the performance of steel. According to the different added elements and content, alloy steel can be divided into low alloy steel and high alloy steel. In general, the addition of alloying elements can improve the strength, hardness, corrosion and oxidation resistance of steel, and have wider applicability.
Stainless steel seamless steel pipe by adding chromium, nickel and other elements in the steel, so that it has excellent rust and corrosion resistance. Stainless steel has a high nickel chromium content, which makes it perform well in almost all environments. According to the different composition of stainless steel, stainless steel seamless steel pipes can be divided into 200 series, 300 series and 400 series.
In addition to the above common materials, there are some special purpose seamless steel pipes on the market, which are called special steel. Special steel is generally produced according to the needs of specific industries through special smelting technology and heat treatment process, and its performance is extremely specialized. Some special steels even introduce rare metals such as titanium, tungsten, molybdenum, etc. into the production process to meet specific environmental needs.
Although the above materials have covered most of the application scenarios, however, scientific and technological progress makes new materials continue to emerge. In recent years, new materials such as high-strength low-alloy steel, duplex stainless steel, and ultra-low carbon stainless steel have gradually entered the market, providing more options for different applications.
