Product Parameters
Black Seamless and Welded Rolled Steel Pipe
Material, Specification, Key Features
Black seamless and welded rolled steel pipes are a vital component in various industries, offering durability and reliability in structural applications. These pipes are designed to withstand high pressure, corrosion, and extreme temperatures, making them suitable for a wide range of uses.
Chemical Composition
| Element | Composition (%) |
| Carbon (C) | 0.25 max |
| Manganese | 0.27 - 0.93 |
| Phosphorus | 0.035 max |
| Sulfur | 0.035 max |
Mechanical Properties
| Property | Value |
| Tensile Strength | 400 - 550 MPa |
| Yield Strength | 250 MPa min |
| Elongation | 25% min |
| Hardness (HB) | 137 max |
Physical Properties
| Property | Value |
| Density | 7.85 g/cm³ |
| Melting Point | 1420-1460°C |
| Thermal Conductivity | 16.3 W/mK |
| Specific Heat | 490 J/kg·K |
Process Performance
| Property | Performance |
| Formability | Excellent |
| Weldability | Good |
| Machinability | Fair |
| Corrosion Resistance | Moderate |
Steel Grade
These steel pipes typically conform to various standards, including ASTM A106 Grade B, ASTM A53 Grade B, and API 5L Grade B.
Application
Oil and Gas Industry: Used for transporting oil, gas, and water in pipelines.
Construction: Ideal for structural applications, such as building frames and supports.
Mechanical Engineering: Used in machinery and equipment manufacturing.
Automotive Industry: Exhaust systems, chassis components, and structural elements.
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