The main material of carbon seamless steel pipe is composed of two elements: carbon and iron. Among them, carbon is the most important component, and its content is generally between 0.12% and 2.0%. In addition, there are small amounts of sulfur, phosphorus, manganese, silicon, and other elements.
Carbon seamless steel pipes with different carbon contents have different characteristics. Generally speaking, the higher the carbon content, the higher the strength and hardness, but the toughness will decrease. On the contrary, carbon seamless steel pipes with lower carbon content have better toughness, but slightly lower strength and hardness.
The production material of carbon seamless steel pipes can be hot-rolled or cold-drawn steel plates and the production process includes cold drawing, hot rolling, hot expansion, cold extrusion, and other methods. Among them, the cold drawing process is a more popular method, because cold drawing can effectively ensure the dimensional accuracy and surface finish of the pipe.

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