20# seamless steel pipe usually uses 20# high-quality carbon steel as raw material, which is a high-quality carbon heat-resistant seamless steel pipe commonly used in building structures and mechanical structures.

20# steel has the following characteristics: good plasticity and strong weldability. Due to its low strength, it is suitable for cold processing and non-high-strength scenes.

20# seamless steel pipe can be used in the following industries:

1. For low and medium pressure boiler pipes, the implementation standard is GB 3087, used to manufacture superheater tubes and water-cooled wall tubes of medium and low pressure boilers (working pressure ≤5.9 MPa), which are in high temperature (≤480℃) + water vapor oxidation environment for a long time

2. Petroleum fracturing pipes, the implementation standard is GB 9948, used for reactors, heat exchangers, etc. of petroleum refining units, contacting acidic media (H₂S, CO₂) and high pressure (up to 15 MPa)

3. High-pressure fertilizer equipment, the implementation standard is GB 6479, used for high-pressure (10~32 MPa) fertilizer equipment such as synthetic ammonia and urea, contacting highly corrosive media (such as liquid ammonia, urea melt)

Hot-rolled seamless steel pipes for hydraulic supports, the implementation standard is GB/T17396, used for hydraulic support columns and jacks in coal mines, and withstand high-frequency alternating loads (50~100 MPa) and impact vibration