API 5LGB /ASTM A106B/ASME A53 GB

API 5LGB, ASTM A106B, and ASME A53 GB are specifications for different types of steel pipes commonly used in various industries.

• API 5LGB: This specification refers to the American Petroleum Institute (API) standard for line pipe, which is used for transporting oil, gas, and other fluids. It specifies the requirements for seamless and welded steel pipes with different grades and strengths.
• ASTM A106B: This specification is issued by the American Society for Testing and Materials (ASTM) and covers seamless carbon steel pipe for high-temperature service. It is commonly used in refineries, plants, and other industrial applications where high temperatures and pressures are involved.
• ASME A53 GB: It seems there might be a confusion here. ASME A53 and GB (Chinese National Standard) are separate standards for steel pipes.
  • ASME A53: This specification from the American Society of Mechanical Engineers (ASME) covers seamless and welded black and hot-dipped galvanized steel pipe. It is widely used for general-purpose applications such as plumbing, heating, and air conditioning systems.
  • GB (Chinese National Standard): GB standards refer to the national standards issued by the Standardization Administration of China (SAC). There are several GB standards related to steel pipes, such as GB/T 8163 for fluid transportation, GB/T 3091 for low-pressure fluid transportation, and GB/T 5310 for high-pressure boiler tubes.