Pearlitic Alloy Steel Tubes For High-pressure Boiler Applications
Gb 5310 12cr2mog seamless boiler tubes, compliant with gb/t 5310-2017, are pearlitic alloy steel tubes designed for high-pressure boilers, offering excellent high-temperature creep resistance and corrosion resistance for superheaters, reheaters, and steam pipelines.
Pearlitic Alloy Steel Tubes For High-pressure Boiler Applications
Gb 5310 12cr2mog seamless boiler tubes, compliant with gb/t 5310-2017, are pearlitic alloy steel tubes designed for high-pressure boilers, offering excellent high-temperature creep resistance and corrosion resistance for superheaters, reheaters, and steam pipelines.
GB 5310 12Cr2MoG seamless boiler tubes, compliant with GB/T 5310-2017, are pearlitic alloy steel tubes designed for high-pressure boilers operating at pressures ≥9.8 MPa and temperatures between 450°C and 650°C. These tubes are manufactured using seamless processes, either hot-rolled (extrusion, expansion) or cold-drawn (rolling), ensuring high dimensional accuracy and structural integrity. They are primarily used for superheaters, reheaters, steam pipelines, and other high-pressure components in power plant boilers, with a maximum wall temperature of ≤540°C for superheaters.
Available in outer diameters from 23 mm to 1500 mm and wall thicknesses from 2.8 mm to 150 mm, GB 5310 12Cr2MoG seamless tubes offer excellent high-temperature mechanical properties, including creep resistance, due to their composition of chromium (Cr), molybdenum (Mo), and other alloying elements. The manufacturing process involves smelting via electric furnace, oxygen converter, or electroslag remelting, with tube blanks produced by continuous casting, die casting, or hot rolling (forging). Heat treatment (normalizing and tempering) enhances mechanical properties, while rigorous testing (hydraulic, flattening, flaring, ultrasonic, low-power, non-metallic inclusions, grain size, microstructure, and decarburization layer) ensures compliance with GB/T 5310-2017 standards.[](https://www.sunnysteel.com/gb-5310-15crmog-high-pressure-seamless-boiler-tubes.php)
Compared to GB 5310 20G or 20MnG, 12Cr2MoG tubes provide superior creep resistance and thermal strength at 500–550°C due to their higher chromium and molybdenum content, making them ideal for ultra-supercritical boiler applications. Weldability is good, with options for manual welding (e.g., H12CrMo or H15CrMo welding wire) or automatic welding (e.g., argon arc or submerged arc), though preheating may be required for thicker walls. Surface treatments like varnishing or galvanizing prevent rust, and tubes are delivered with plain, beveled, or threaded ends. These tubes are widely used in power generation, petrochemicals, and industrial boiler systems, ensuring reliable performance under high-pressure and high-temperature conditions.
GB 5310 12Cr2MoG seamless boiler tubes are a durable, high-performance solution for high-pressure boiler systems, offering safety, efficiency, and longevity in critical industrial environments.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08–0.15 |
| Silicon (Si) | 0.17–0.37 |
| Manganese (Mn) | 0.40–0.70 |
| Phosphorus (P) | ≤0.030 |
| Sulfur (S) | ≤0.030 |
| Chromium (Cr) | 2.00–2.50 |
| Molybdenum (Mo) | 0.90–1.10 |
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 450–600 |
| Yield Strength (MPa) | ≥280 |
| Elongation, min (%) | ≥20 |
| Impact Energy (J, 0°C) | ≥27 |
Superior creep strength at 500–550°C for ultra-supercritical boilers.
Resistant to steam and water corrosion at high temperatures.
Handles up to 540°C for superheaters.
Eliminates weak points for enhanced safety.
Weldable with standard techniques for easy installation.
Durable for reduced maintenance in high-pressure systems.
| Feature | GB 5310 12Cr2MoG | GB 5310 20MnG | GB 5310 15CrMoG |
|---|---|---|---|
| Material Type | Pearlitic Alloy Steel | Carbon Steel | Pearlitic Alloy Steel |
| Temperature Range | ≤540°C (superheater) | ≤450°C (headers/steam pipes) | ≤540°C (superheater) |
| Tensile Strength (MPa) | 450–600 | 415–580 | 440–640 |
| Yield Strength (MPa) | ≥280 | ≥240 | ≥295 |
| Weldability | Good (preheating may be required) | Good | Moderate |
| Applications | Ultra-supercritical boilers | High-pressure boilers | Ultra-supercritical boilers |
| Key Advantage | High creep resistance | High strength and toughness | High thermal strength |
A curated list of long-tail keywords for GB 5310 12Cr2MoG seamless boiler tubes, covering specifications, applications, and material properties.
Note: GB 5310 12Cr2MoG seamless boiler tubes comply with GB/T 5310-2017 standards. For detailed specifications, refer to the standards or contact a certified supplier.
GB 5310 12Cr2MoG seamless boiler tubes are vital for high-pressure and high-temperature systems in power generation, petrochemicals, and manufacturing, offering superior creep resistance and durability at pressures ≥9.8 MPa and temperatures of 450°C–650°C.
Handles pressures ≥9.8 MPa for efficient power generation.
Operates reliably up to 540°C for optimal steam production.
Enhances thermal efficiency in high-pressure boiler systems.
Ensures safe high-pressure steam flow up to 650°C.
Supports high-pressure petrochemical processes.
Facilitates efficient heat transfer in industrial systems.
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