Application:

1. Oil and gas transmission: used for long-distance oil and gas pipelines, capable of withstanding high pressure.
For example, pipelines from oil fields to refineries.

2. Thermal pipes: In urban central heating systems, they serve as pipes for transporting steam or hot water.
Guarantee the heating needs of residents and businesses.

3. Water supply and drainage engineering: as a pipe for urban water supply and drainage.
– For example, the underground water pipe network.

4. Chemical industry: used to transport various chemical liquids and gases.
Carbon steel pipes are often used for material transfer pipelines in chemical plants.

5. Mechanical manufacturing: used to fabricate pipes and some structural support components for hydraulic systems.

6. Building structure: as a material for scaffolding, pillars, etc.

7. Automotive industry: such as pipes for exhaust systems.

8. Agricultural irrigation: Water pipelines used for irrigation of farmland.

Physical properties:

1. Density: about 7.85g/cm ³, relatively heavy. For example, in handling and installation, it is necessary to consider the impact of its weight on the operation.

2. Elastic modulus: high, with a certain rigidity and anti-deformation ability. – This makes the carbon steel pipe less prone to excessive elastic deformation when subjected to pressure.

3. Thermal expansion coefficient: relatively large, the dimensional change is more obvious when the temperature changes. – Therefore, thermal expansion compensation needs to be considered when designing the heat exchange system.

4. Wear resistance: general, depending on the surface treatment and the use environment.

Chemical properties:

1. Oxidation resistance: It is relatively stable in a dry environment at room temperature, but it is easy to oxidize in a high temperature or humid environment. – Carbon steel pipes that are exposed to the wind and rain for a long time are prone to rust.

2. Corrosion resistance: It has a certain tolerance to general acids and alkalis, but it is weak to strong acids and alkalis. – In the chemical industry, it is necessary to choose appropriate protective measures according to the characteristics of the medium.

3. Weldability: Good, easy to weld connection and repair.

4. Electrochemical properties: Electrochemical corrosion is prone to occur in electrolyte solution.