ASTM A178, A179, and A192 - American Standard Seamless Carbon Steel Pipes
1. Product Description: American Standard Seamless Carbon Steel Pipes ASTM A178, A179, and A192 are premium-grade pipes designed for high-temperature and high-pressure applications. These pipes are manufactured from carbon steel and are seamless, ensuring a uniform wall thickness and superior structural integrity. They are widely used across various industries due to their strength, durability, and resistance to corrosive environments.
2. Product Parameters:
| Parameter | Description |
| Grades | ASTM A178, A179, A192 |
| Material | Seamless Carbon Steel |
| Standard | ASTM A178, A179, A192 |
| Size Range | Various diameters and wall thicknesses as per 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. Product Advantages:
- Seamless Construction: Provides a consistent material structure and eliminates potential seam-related failures.
- High-Temperature Service: Suitable for applications where temperatures can reach into the hundreds of degrees Celsius.
- Pressure Resistance: Designed to withstand high internal pressures, essential for power generation and petrochemical applications.
- Long Service Life: Built to last with minimal maintenance in demanding conditions.
- Corrosion Resistance: Offers resistance to corrosion, reducing the need for frequent replacements.
4. Product Uses:
- Boiler Tubes: Used in the construction of industrial and power boilers.
- Superheater and Reheater Tubes: Employed in the superheater and reheater sections of steam power plants.
- Heat Exchangers: Suitable for use in heat exchangers operating under high pressure and temperature.
- Petrochemical Industry: Utilized in pipelines and equipment within the petrochemical industry.
- Refineries: Ideal for high-temperature pipelines and components in oil refineries.
5. Executing Standards:
- ASTM A178: Covers seamless carbon steel boiler tubes for high-temperature service.
- ASTM A179: Specifies seamless cold-drawn low-carbon steel boiler and superheater tubes.
- ASTM A192: Defines seamless carbon steel pipes for high-temperature and high-pressure service.
6. Mechanical Properties:
| Property | ASTM A178/A179 Requirement | ASTM A192 Requirement |
| Tensile Strength | ≥415 MPa (60,000 psi) | ≥415 MPa (60,000 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 | Varies depending on heat treatment | |
7. Chemical Composition:
| Element | ASTM A178/A179 Range (%) | ASTM A192 Range (%) |
| Carbon | 0.15 - 0.30 | 0.15 - 0.30 |
| 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 A178, A179, and A192 American Standard Seamless Carbon Steel Pipes are engineered to provide exceptional performance in high-temperature and high-pressure environments. Their seamless construction and adherence to ASTM standards make them suitable for a wide range of applications in the power generation, petrochemical, and refining industries. These pipes offer a reliable and durable solution for critical applications where safety and efficiency are paramount.
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