The pressure level of a carbon steel pipe refers to the maximum pressure value it can withstand. This level is usually determined based on factors such as the material, wall thickness, diameter, and use environment of the CS pipe. Different pressure resistance levels correspond to different usage scenarios and safety requirements. Therefore, when choosing a CS pipe, it is crucial to understand its pressure resistance level.
Classification of pressure resistance levels of CS pipes
The pressure resistance of carbon steel pipes is one of its important properties. The pressure resistance levels of carbon steel pipes are divided into the following categories:
1. Low-pressure carbon steel pipes
The pressure resistance is generally no more than 5MPa, and is mainly suitable for conveying low-pressure media such as water and gas.
2. Medium-pressure carbon steel pipes
The pressure resistance is 6-10MPa, and is mainly suitable for conveying petroleum, chemical media, etc.
3. High-pressure carbon steel pipes
The pressure resistance is generally above 10MPa, and is mainly suitable for conveying high-pressure media, such as automotive brake pipes, etc.
Sizes of CS pipes at different pressure levels
The sizes of CS pipes are differentiated according to different pressure levels. The following table lists common sizes.
Pressure level |
Size |
1.0MPa |
Φ6-720mm |
1.6MPa |
Φ6-720mm |
2.5MPa |
Φ6-720mm |
4.0MPa |
Φ6-720mm |
6.4MPa |
Φ6-720mm |
10.0MPa |
Φ6-720mm |
Parameters and specifications of CS pipes at different pressure levels
In addition to size, CS pipes have different parameters and specifications at different pressure levels. The following table lists common parameters and specifications.
Pressure level |
Parameter |
Specification |
1.0MPa |
Wall thickness |
1.5-60mm |
Length |
3-12m |
|
Nominal diameter |
6-720mm |
|
1.6MPa |
Wall thickness |
1.5-80mm |
Length |
3-12m |
|
Nominal diameter |
6-720mm |
|
2.5MPa |
Wall thickness |
1.5-100mm |
Length |
3-12m |
|
Nominal diameter |
6-720mm |
|
4.0MPa |
Wall thickness |
1.5-120mm |
Length |
3-12m |
|
Nominal diameter |
6-720mm |
|
6.4MPa |
Wall thickness |
1.5-120mm |
Length |
3-12m |
|
Nominal diameter |
6-720mm |
|
10.0MPa |
Wall thickness |
1.5-120mm |
Length |
3-12m |
|
Nominal diameter |
6-720mm |
Factors affecting the pressure rating of CS pipes
1. Material
The material of carbon steel pipes has an important influence on their pressure resistance. High-quality steel can provide better pressure resistance, while low-quality steel may cause safety hazards.
2. Wall thickness
Wall thickness is one of the key factors affecting the pressure resistance of CS pipes. Generally speaking, the thicker the wall, the stronger the pressure resistance of carbon steel pipes.
3. Diameter
The diameter also affects the pressure resistance of CS pipes. Under the same wall thickness conditions, carbon steel pipes with smaller diameters usually have higher pressure resistance.
4. Use environment
The use environment of CS pipes will also affect their pressure resistance. For example, carbon steel pipes used in high temperature, high pressure or corrosive environments require higher pressure resistance.