ASTM A106/A106M Grade B Seamless Carbon Steel Pipes
1. Definition:
ASTM A106/A106M Grade B Seamless Carbon Steel Pipes are high-quality pipes manufactured to meet the stringent requirements of the ASTM A106/A106M standard. These pipes are seamless, meaning they are made from a single piece of steel without any welds or seams. They are specifically designed for high-temperature applications and are widely used in various industries due to their durability and strength.
2. Advantages:
- Seamless Construction: Provides uniformity and eliminates the risk of seam-related failures.
- High-Temperature Tolerance: Designed to withstand temperatures exceeding 500°F (260°C).
- Pressure Resistance: Capable of withstanding high internal pressures, making them suitable for pressurized systems.
- Long Service Life: Built to last in demanding environments with consistent performance.
- Corrosion Resistance: Offers resistance to corrosion, reducing maintenance and replacement costs.
- Wide Range of Sizes: Available in various diameters and wall thicknesses to suit different applications.
3. Product Parameters:
Parameter | Description |
Standard | ASTM A106/A106M Grade B |
Material | Seamless Carbon Steel |
Size Range | Diameters from 1/8 inch to 24 inches and wall thicknesses as per ASTM A106/A106M |
Length | Standard lengths up to 40 feet, customizable upon request |
Ends | Plain ends, beveled ends, threaded, or socket-weld ends |
Surface Treatment | Normalizing, annealing, or as specified by customer |
4. Applications:
- Oil and Gas Industry: Used for transporting oil, gas, and other fluids at high temperatures.
- Power Plants: Employed in steam lines and other high-temperature systems within power generation facilities.
- Chemical Processing: Suitable for handling corrosive chemicals and high-temperature processes.
- Boiler Systems: Ideal for use in boiler tubes and superheaters.
- Petrochemical Plants: Utilized in pipelines and equipment where high temperatures are a factor.
5. Mechanical Properties:
Property | Requirement |
Tensile Strength | ≥485 MPa (70,000 psi) |
Yield Strength | ≥240 MPa (35,000 psi) |
Elongation | ≥20% in 2 in (50 mm) or 4D (diameter), whichever is greater |
Hardness | Rockwell B 90 maximum for pipes ≤ 2 in (50 mm) in diameter |
6. Chemical Composition:
Element | Typical Range (%) |
Carbon | 0.29 - 0.36 |
Manganese | 0.35 - 0.60 |
Phosphorus | ≤ 0.035 |
Sulfur | ≤ 0.035 |
Silicon | ≤ 0.35 |
Copper | ≤ 0.30 |
7. Heat Treatment: ASTM A106/A106M Grade B pipes undergo heat treatment processes such as normalization or annealing to achieve the desired mechanical properties and to ensure ductility.
Conclusion: ASTM A106/A106M Grade B Seamless Carbon Steel Pipes are engineered for high-temperature applications and offer a range of benefits that make them indispensable in various industries. Their seamless construction, combined with their mechanical and chemical properties, ensures reliable performance and longevity in demanding environments.
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