GOST 15X5M and 15X1M Low Alloy High-Temperature Seamless Steel Pipes
1. Product Description: GOST 15X5M and 15X1M Low Alloy High-Temperature Seamless Steel Pipes are engineered for applications that demand high levels of heat resistance and mechanical strength. These pipes are manufactured from low alloy steel and are seamless, ensuring uniform wall thickness and superior structural integrity. Designed to withstand extreme temperatures, these pipes are ideal for use in various high-temperature industrial processes.
2. Product Parameters:
Parameter | Description |
Grades | GOST 15X5M and 15X1M |
Material | Low Alloy Steel (Seamless) |
Standard | GOST 15X5M and GOST 15X1M |
Size Range | Various diameters and wall thicknesses as per GOST 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 | Typical Requirements |
Tensile Strength | ≥440 MPa (64,000 psi) for 15X5M; ≥510 MPa (74,500 psi) for 15X1M |
Yield Strength | ≥295 MPa (42,500 psi) for 15X5M; ≥355 MPa (51,500 psi) for 15X1M |
Elongation | ≥20% in 50 mm (2 in) or 4D, whichever is greater |
Hardness | Varies depending on heat treatment |
4. Chemical Composition:
Element | Typical Range (%) for 15X5M | Typical Range (%) for 15X1M |
Carbon | 0.10 - 0.18 | 0.12 - 0.20 |
Chromium | - | 0.40 - 0.70 |
Molybdenum | - | 0.40 - 0.60 |
Manganese | ≤1.00 | ≤1.00 |
Phosphorus | ≤0.025 | ≤0.025 |
Sulfur | ≤0.025 | ≤0.025 |
5. Product Applications:
- High-Temperature Equipment: Used in equipment that operates under high temperatures, such as furnaces and boilers.
- Heat Exchangers: Ideal for use in heat exchangers that work in harsh thermal conditions.
- Power Plants: Employed in various components of power plants, including steam lines and turbines.
- Chemical and Petrochemical Industries: Suitable for pipelines and reactors that handle chemicals at elevated temperatures.
- Refineries: Utilized in refineries for high-temperature fluid transport and processing.
6. Product Advantages:
- Seamless Construction: Provides a consistent material structure and eliminates potential seam-related failures.
- High-Temperature Resistance: Low alloy steel offers excellent resistance to high temperatures and thermal cycling.
- Creep Resistance: Designed to resist deformation under prolonged exposure to heat.
- Weldability: The 15X5M and 15X1M grades have good weldability, making them easy to integrate into various systems.
- Corrosion Resistance: Enhanced resistance to corrosion and oxidation due to the alloy content.


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