Product Parameters
Carbon Steel Seamless Pipe
Material
Carbon steel seamless pipes are made from carbon steel, a type of steel where the main alloying element is carbon. These pipes are manufactured without any welding seam, resulting in a stronger and more reliable product compared to welded pipes.
Specification
Carbon steel seamless pipes are available in various specifications, including different sizes, wall thicknesses, and grades to suit different applications. Common specifications include ASTM A106, ASTM A53, API 5L, and DIN standards.
Chemical Composition
| Element | Composition (%) |
| Carbon (C) | 0.25 - 0.30 |
| Manganese (Mn) | 0.60 - 1.05 |
| Phosphorus (P) | 0.035 (Max) |
| Sulfur (S) | 0.035 (Max) |
Mechanical Properties
| Property | Value |
| Tensile Strength | 415 MPa (Min) |
| Yield Strength | 240 MPa (Min) |
| Elongation | 30% (Min) |
| Hardness | ≤ 197 HRB |
Physical Properties
| Property | Value |
| Density | 7.85 g/cm³ |
| Melting Point | 1425-1540°C |
| Thermal Conductivity | 51.9 W/m·K |
| Specific Heat | 0.46 J/g·K |
Process Performance
| Performance | Rating |
| Weldability | Excellent |
| Formability | Good |
| Machinability | Fair to Good |
| Heat Treatment | Annealing required |
Steel Grade
The most common steel grade for carbon steel seamless pipes is ASTM A106 Grade B. However, other grades such as ASTM A53 Grade B and API 5L Grade B are also widely used depending on specific requirements.
Application
Carbon steel seamless pipes find applications in:
Oil and gas pipelines
Petrochemical plants
Power generation
Shipbuilding
Construction
Automotive manufacturing
Structural engineering
Possible Alternative Grades
While ASTM A106 Grade B is the most commonly used grade for carbon steel seamless pipes, alternative grades such as ASTM A53 Grade B and API 5L Grade B can also be considered based on specific application requirements. Additionally, higher grades such as ASTM A106 Grade C and API 5L Grade X60/X65 offer enhanced properties for more demanding applications.
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