A: API 5L series grades are commonly used, such as X42, X52, X65 and X80. Among them, X52 and X65 are the most widely used, which can meet the pressure requirements of medium and long-distance natural gas transmission.
Q: What is the application of ASTM A106 Grade C seamless steel pipes?
A: ASTM A106 Grade C is a high-temperature carbon steel seamless pipe with a maximum service temperature of 427℃. It is mainly used in high-temperature and medium-pressure pipelines in petrochemical, power station and other industries, such as steam pipelines.
A: GB/T 8163 20# or 45# seamless steel pipes are suitable. 20# steel is used for low and medium pressure hydraulic systems, while 45# steel is used for high-pressure hydraulic systems due to its higher strength.
A: API 5L X65/X70 seamless steel pipes with anti-corrosion treatment are commonly used. They have high strength, good low-temperature toughness and corrosion resistance, which can adapt to the harsh marine environment.
Q: What is the application of GB/T 3087 10# seamless steel pipes?
A: GB/T 3087 10# seamless steel pipes are low-carbon steel pipes with good weldability and plasticity. They are mainly used in low-pressure boiler water pipes, steam pipes and general fluid pipelines with low temperature and pressure.
