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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.
With our flexible business model, we constantly pursue innovation and win the support and trust of our customers with high-quality High Quality Duplex 201 304 304L 316L 309S 310S 2205 Seamless and Welded Stainless Steel Pipe. Our products are exported to many countries and regions. High standard, refinement and zero defect are the basic requirements of our enterprise for workers and the basic working attitude of workers. Employing talents from the same line and adhering to the principle of 'honesty, good faith, real thing and sincerity', our company hopes to gain common development with clients from both at home and abroad!
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