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　　What should we pay attention to when choosing carbon steel boiler pipe? Choice lies in choosing carbon steel boiler pipe. We must avoid choosing a product that is not suitable for us. Understanding the style and combining the personal choice requirements with it when using carbon steel boiler pipe has become the core of choosing carbon steel boiler pipe and understanding the product quality and use details. Carbon steel boiler pipe selection, better market base.

　　(1) Carbon: The higher the carbon content, the higher the rigidity, but the carbon steel boiler pipe worse the plasticity and toughness.

　　(2) Sulphur: It is a harmful impurity in steel. Carbon steel boiler pipe with high sulphur content is easy to crack when it is processed under pressure at high temperature. It is usually called hot brittleness.

　　(3) Phosphorus: It can make the plasticity and toughness of carbon steel boiler pipe decrease obviously, especially at low temperature. This phenomenon is called cold brittleness. In High Pressure DIN 2444 Carbon Steel Boiler Pipe, sulfur and phosphorus should be strictly controlled.

　　(4) Manganese: It can improve the strength of carbon steel boiler pipe, weaken and eliminate the adverse effects of sulfur, and improve the hardenability of steel. High carbon steel boiler pipe (high manganese steel) with high manganese content has good wear resistance and other physical properties.

　　(5) Silicon: It can improve the hardness of carbon steel boiler pipe, but the plasticity and toughness decrease. Electrical steel contains a certain amount of silicon, which can improve the soft magnetic properties.

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