API 5L Gr. B/ASTM A53 Gr. B Carbon Seamless Boiler Steel Pipe
1. Product Description: API 5L Grade B/ASTM A53 Grade B Carbon Seamless Boiler Steel Pipe is a carbon steel pipe designed for use in boiler applications and other high-pressure environments. These pipes are seamless, ensuring uniform wall thickness and superior mechanical properties. They are manufactured to meet the stringent requirements of both the American Petroleum Institute (API) and the American Society for Testing and Materials (ASTM), ensuring quality and reliability.
2. Product Parameters:
Parameter | Description |
Grades | API 5L Grade B, ASTM A53 Grade B |
Material | Carbon Steel (Seamless) |
Standard | API 5L, ASTM A53 |
Size Range | Various diameters and wall thicknesses as per API/ASTM standards |
Length | Standard lengths, customizable upon request |
Ends | Plain ends, beveled ends, threaded, or socket-weld ends |
Surface Treatment | As-rolled, annealed, or normalized |
3. Mechanical Properties:
Property | Requirement |
Tensile Strength | ≥415 MPa (60,000 psi) |
Yield Strength | ≥240 MPa (35,000 psi) |
Elongation | ≥20% in 50 mm (2 in) or 4D, whichever is greater |
Hardness | Varies depending on heat treatment and processing |
4. Chemical Composition:
Element | Typical Range (%) |
Carbon | 0.29 - 0.36 |
Manganese | 0.35 - 0.60 |
Phosphorus | ≤ 0.025 |
Sulfur | ≤ 0.025 |
Silicon | ≤ 0.35 |
5. Product Uses:
- Boiler Tubes: Used in high-pressure boilers for steam generation.
- Superheater Tubes: Employed in the superheater sections of steam power plants.
- Heat Exchangers: Suitable for use in heat exchangers operating under high pressure and temperature.
- Pressure Vessels: Ideal for construction of high-pressure vessels and reactors.
- Oil and Gas Industry: Utilized in pipelines for transporting oil, natural gas, and other fluids.
6. Product Grade Standards:
- API 5L Grade B: This grade is part of the API 5L specification, which covers line pipes (seamless and welded) used for pipeline transportation systems in the petroleum and natural gas industries.
- ASTM A53 Grade B: This grade is part of the ASTM A53 specification, which covers seamless and welded steel pipes, with Grade B offering higher strength for more demanding applications.
Conclusion: API 5L Grade B/ASTM A53 Grade B Carbon Seamless Boiler Steel Pipe offers a balance of strength, ductility, and corrosion resistance suitable for high-pressure boiler systems and other demanding applications. Their seamless construction and adherence to API and ASTM standards ensure that these pipes provide a reliable and durable solution for various industrial applications.
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