| Customization: | Available |
|---|---|
| Application: | Chemical Industry, Construction Industry, Oil and Gas Industry |
| Carbon Content: | Medium Carbon Steel |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
|
Element
|
Typical Content in Grade B
|
Role
|
|
C
|
≤0.22
|
Carbon is a key element in steel. In Grade B, a relatively low carbon content helps to maintain good weldability and ductility. High carbon levels can lead to increased hardness but reduced weldability, which is not ideal for pipeline construction where extensive welding is often required.
|
|
Mn
|
≤1.20
|
Manganese is added to improve the strength of the steel. It also acts as a deoxidizer during the steel - making process. In Grade B pipes, the manganese content is adjusted to balance strength and other properties such as formability.
|
|
P
|
≤0.030
|
Phosphorus is a harmful element in high concentrations. In Grade B, limiting phosphorus helps to prevent embrittlement of the steel, especially at low temperatures. High phosphorus levels can cause the steel to become brittle and more prone to cracking under stress.
|
|
S
|
≤0.030
|
Sulfur, like phosphorus, is a detrimental element if present in excess. In Grade B pipes, controlling sulfur content is crucial to avoid the formation of inclusions that can reduce the mechanical properties and corrosion resistance of the steel.
|
|
Property
|
Value for Grade B Psl2
|
Significance
|
|
Minimum Yield Strength (MPa)
|
240
|
The yield strength indicates the stress at which the pipe material starts to deform plastically. A minimum yield strength of 240 MPa ensures that Grade B Psl2 pipes can withstand the internal pressure of the transported fluids, such as oil and gas, without permanent deformation. This is essential for maintaining the integrity of the pipeline system.
|
|
Minimum Tensile Strength (MPa)
|
415
|
Tensile strength represents the maximum stress the pipe can withstand before breaking. The minimum tensile strength of 415 MPa for Grade B Psl2 pipes ensures that they can endure external forces, such as soil loads and mechanical impacts during installation and operation.
|
|
Elongation (%)
|
≥22
|
Elongation measures the ductility of the material. A minimum elongation of 22% means that Grade B Psl2 pipes can be bent and formed during installation without cracking. This property is crucial for adapting to the terrain and the specific requirements of pipeline routing.
|
|
Grade
|
Main Differences Compared to Grade B
|
Applications
|
|
X42
|
- Higher minimum yield strength (290 MPa) compared to Grade B (240 MPa). - Generally used for pipelines in more demanding applications where higher pressure - bearing capacity is needed.
|
- Long - distance gas transmission pipelines in areas with complex terrains, as the higher strength allows for thinner - walled pipes, reducing material costs while maintaining safety.
|
|
X65
|
- Significantly higher minimum yield strength (448 MPa). - Has better resistance to deformation under high - pressure and high - temperature conditions.
|
- High - pressure gas pipelines in arctic regions or deep - sea subsea pipelines, where the pipes need to withstand extreme environmental pressures and temperatures.
|
|
X80
|
- Extremely high minimum yield strength (552 MPa). - Offers enhanced toughness and fatigue resistance.
|
- Ultra - high - pressure gas transmission pipelines over long distances. These pipelines are often part of major international gas transportation networks, where the reliability and long - term performance of the pipes are of utmost importance.
|
){kind=link}