As an important industrial material, seamless steel pipe is widely used in the fields of petroleum, chemical industry, electric power, aviation, machinery, etc. Its material and use temperature range are crucial to ensure the performance and safety of steel pipes. This article will discuss in detail the types of materials of seamless steel pipes and their respective use temperature ranges.

There are many types of materials for seamless steel pipes. According to their main components and characteristics, they can be divided into carbon steel seamless steel pipes, alloy steel seamless steel pipes, stainless steel seamless steel pipes, and special steel seamless steel pipes.

First of all, carbon steel seamless steel pipes are one of the most common and economical materials, mainly used for transporting liquids and gases. Carbon steel can be divided into low carbon steel, medium carbon steel and high carbon steel according to the carbon content. Low carbon steel has good toughness and ductility, and is suitable for making various pipes and structural parts. Its use temperature range is wide, and it can generally be used safely between -29℃ and 450℃. Medium carbon steel has higher hardness and strength, and is suitable for manufacturing mechanical parts. Its use temperature range is slightly narrower than that of low carbon steel, generally between -20℃ and 400℃. High carbon steel is mostly used to make high-demand equipment such as knives and molds due to its high hardness. Its operating temperature range is relatively narrow, generally between -10℃ and 350℃.

Secondly, alloy steel seamless steel pipes have high high temperature resistance and are mainly used in chemical, petroleum and power industries. Alloy steel improves the performance of steel by adding alloy elements such as chromium, nickel and molybdenum to carbon steel. According to the added elements and content, alloy steel can be divided into low alloy steel and high alloy steel. The operating temperature range of low alloy steel is generally between -40℃ and 500℃, while high alloy steel can be used at higher temperatures, even above 800℃.

Stainless steel seamless steel pipes have excellent stainlessness and corrosion resistance by adding elements such as chromium and nickel to steel. Stainless steel seamless steel pipes are widely used in food, medical, chemical and other fields, and their operating temperature range can generally reach -196℃ to 600℃. There are many types of stainless steel, which can be divided into 200 series, 300 series and 400 series according to different compositions, each with different performance and applicable temperature range.

In addition, there are some seamless steel pipes for special purposes on the market, such as acid-resistant steel pipes, heat-resistant steel pipes, etc. These steel pipes are made of special materials and processes to meet the use requirements in specific environments. The use temperature range of these special steel seamless steel pipes varies due to their different materials and manufacturing processes.
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