The chemical composition of seamless steel pipes under the GB/T 5310 standard mainly depends on the composition of the high-quality carbon steel or low alloy steel used. Taking 20G high-pressure boiler tubes as an example, its main chemical components include carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), nickel (Ni) and other elements.
The production method of GB/T 5310 seamless steel pipe mainly includes the following steps: preparation of raw materials, rolling, heat treatment, finishing, and inspection.
Seamless steel pipes under the GB/T 5310 standard have a series of significant characteristics, which enable the steel pipes under this standard to have excellent performance in high-pressure and high-temperature environments.
1. Has high strength and excellent mechanical properties. It has high tensile strength and yield strength, can withstand high pressure and high thermal load, and is suitable for high-temperature equipment such as high-pressure boilers.
2. Has good toughness and welding performance. In low temperature environments, the steel pipe can still maintain good toughness and prevent the pipe from pittle fracture.
3. Has good oxidation resistance and corrosion resistance. Under high temperature and high pressure conditions, the surface of steel pipes is not prone to oxidation and corrosion, ensuring the safe operation of the pipeline.
GB/T 5310 seamless steel pipe has a wide range of applications, mainly covering many important industrial fields. In the petroleum industry, it is used in oil and gas transmission pipelines, refineries, oil field water injection systems and other scenarios. In the chemical industry, it is used in distillation, cracking, reaction and other equipment. In the power industry, it is used in key equipment such as boilers and generator sets.
