ASTM A106 Grade B and Grade C Carbon Steel Seamless Pipes
1. Product Description: ASTM A106 Grade B and Grade C Carbon Steel Seamless Pipes are tubular products manufactured to the specifications outlined in ASTM A106, a standard that covers seamless carbon steel pipes for high-temperature service. These pipes are designed without a welded seam, which provides a consistent material structure and increased resistance to various service conditions.
2. Product Parameters:
| Parameter | Description |
| Grades | ASTM A106 Grade B and Grade C |
| Material | Carbon Steel (Seamless) |
| Standard | ASTM A106 |
| Size Range | Wide range of diameters and wall thicknesses |
| Length | Standard lengths, customizable upon request |
| Ends | Plain ends, beveled ends, threaded, or socket-weld ends |
| Surface Treatment | As-rolled, normalized, or annealed |
3. Product Advantages:
- Seamless Construction: Offers a uniform wall thickness and improved resistance to pressure.
- High-Temperature Service: Suitable for applications where high-temperature performance is required.
- Enhanced Strength: Grade C provides higher tensile and yield strength compared to Grade B.
- Cost-Effective: A reliable and economical choice for a variety of industrial applications.
- Corrosion Resistance: Offers resistance to corrosion in many environments.
4. Product Uses:
- Oil and Gas Industry: Used for pipelines transporting oil, gas, and other fluids.
- Refineries: Suitable for high-temperature applications within oil refineries.
- Boiler and Superheater Tubes: Ideal for use in boiler systems and superheaters.
- Heat Exchangers: Employed in heat exchangers that operate at high temperatures.
- General Construction: Utilized in structural applications where high-strength tubing is needed.
5. Executing Standards:
- ASTM A106: The standard that defines the material, dimensions, and properties of seamless carbon steel pipes for high-temperature service.
6. Mechanical Properties:
| Property | ASTM A106 Grade B | ASTM A106 Grade C |
| Tensile Strength | ≥485 MPa (70,000 psi) | ≥485 MPa (70,000 psi) |
| Yield Strength | ≥240 MPa (35,000 psi) | ≥310 MPa (45,000 psi) |
| Elongation | ≥20% in 50 mm (2 in) | ≥20% in 50 mm (2 in) |
| Hardness | Rockwell B 90 max (optional) | Rockwell B 90 max (optional) |
7. Chemical Composition:
| Element | ASTM A106 Grade B Range (%) | ASTM A106 Grade C Range (%) |
| Carbon | 0.29 - 0.36 | 0.29 - 0.36 |
| Manganese | 0.35 - 0.60 | 0.35 - 0.60 |
| Phosphorus | ≤ 0.035 | ≤ 0.035 |
| Sulfur | ≤ 0.035 | ≤ 0.035 |
| Silicon | ≤ 0.35 | ≤ 0.35 |
Conclusion: ASTM A106 Grade B and Grade C Carbon Steel Seamless Pipes are versatile and reliable choices for high-temperature applications. Their seamless construction and adherence to ASTM A106 standards ensure that these pipes are suitable for a range of industrial uses. With a balance of mechanical properties and chemical composition, these pipes provide a cost-effective solution for demanding environments.
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