Low-alloy Steel Tubes For High-pressure Boiler Applications
Gb 5310 10cr9mo1vnbn seamless boiler tubes, compliant with gb/t 5310-2017, are low-alloy steel tubes for high-pressure boilers, offering excellent high-temperature strength and corrosion resistance for superheaters, reheaters, and petrochemical applications.
Low-alloy Steel Tubes For High-pressure Boiler Applications
Gb 5310 10cr9mo1vnbn seamless boiler tubes, compliant with gb/t 5310-2017, are low-alloy steel tubes for high-pressure boilers, offering excellent high-temperature strength and corrosion resistance for superheaters, reheaters, and petrochemical applications.
GB 5310 10Cr9Mo1VNbN seamless boiler tubes, compliant with GB/T 5310-2017, are low-alloy steel tubes designed for high-pressure boilers operating at pressures ≥9.8 MPa and temperatures up to 600°C. These tubes are manufactured using seamless processes, either hot-rolled (extrusion, expansion) or cold-drawn (rolling), ensuring high dimensional accuracy and structural integrity.
Available in outer diameters from 23 mm to 1500 mm and wall thicknesses from 2.8 mm to 150 mm, GB 5310 10Cr9Mo1VNbN seamless tubes offer exceptional high-temperature strength, creep resistance, and corrosion resistance due to their composition, including approximately 10% chromium (Cr), 9% molybdenum (Mo), 1% vanadium (V), and 0.3–0.5% niobium (Nb), with nitrogen (N) for enhanced stability. The steel is smelted via electric furnace plus furnace refining or electroslag remelting, with vacuum degassing for refined quality, and tube blanks are produced by continuous casting, die casting, or hot rolling (forging). Heat treatment results in a tempered martensite microstructure, ensuring durability under high-temperature conditions. 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.
These tubes excel in ultra-supercritical boilers due to their high thermal conductivity, thermal shock resistance, and resistance to oxidation and erosion. They are weldable using manual welding (e.g., H12CrMo or H15CrMo welding wire) or automatic welding (e.g., argon arc or submerged arc), with preheating recommended for thicker walls. Surface treatments like varnishing or galvanizing prevent rust, and tubes are delivered with plain, beveled, or threaded ends. Widely used in power generation, petrochemicals, and industrial boiler systems, GB 5310 10Cr9Mo1VNbN seamless boiler tubes ensure reliable performance in harsh, high-pressure environments.
GB 5310 10Cr9Mo1VNbN seamless boiler tubes are a critical solution for high-pressure boiler systems, offering safety, efficiency, and longevity in demanding industrial applications.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08–0.12 |
| Silicon (Si) | 0.20–0.50 |
| Manganese (Mn) | 0.30–0.60 |
| Phosphorus (P) | ≤0.020 |
| Sulfur (S) | ≤0.010 |
| Chromium (Cr) | 8.00–9.50 |
| Molybdenum (Mo) | 0.85–1.05 |
| Vanadium (V) | 0.18–0.25 |
| Niobium (Nb) | 0.06–0.10 |
| Nitrogen (N) | 0.03–0.07 |
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 585–740 |
| Yield Strength (MPa) | ≥415 |
| Elongation, min (%) | ≥20 |
| Impact Energy (J, 0°C) | ≥40 |
GB 5310 10Cr9Mo1VNbN Seamless Boiler Tubes are designed for high-pressure and high-temperature applications in power plant boilers. Manufactured to stringent GB 5310 standards, these seamless alloy tubes are composed of chromium, molybdenum, vanadium, and niobium, providing exceptional strength, corrosion resistance, and thermal performance. Ideal for superheater and reheater systems, these tubes ensure reliable and efficient operation in demanding industrial environments.
The alloy composition of 10Cr9Mo1VNbN, including chromium, molybdenum, vanadium, and niobium, imparts superior high-temperature strength and creep resistance. This makes the tubes capable of withstanding extreme temperatures and pressures without deformation or failure, ensuring long-term reliability in boiler systems.
10Cr9Mo1VNbN seamless boiler tubes offer excellent resistance to corrosion and erosion, even in harsh industrial conditions. The presence of chromium and other alloying elements forms a protective layer that shields the tubes from corrosive gases and liquids, extending their lifespan and reducing maintenance costs.
These tubes exhibit good thermal conductivity, facilitating efficient heat transfer in boiler systems. Additionally, their excellent thermal shock resistance allows them to endure rapid temperature fluctuations without cracking or weakening, maintaining structural integrity under varying operational conditions.
Manufactured with precision, 10Cr9Mo1VNbN high-pressure seamless boiler tubes feature accurate dimensions and tight tolerances. This ensures a perfect fit and seamless integration into complex industrial piping systems, minimizing installation issues and enhancing overall system performance.
The high toughness and ductility of 10Cr9Mo1VNbN steel prevent brittle fracture, even under low-temperature conditions. This enhances the safety and reliability of the tubes, making them suitable for critical applications where failure is not an option.
High strength for ultra-supercritical boilers up to 600°C.
Resists oxidation and erosion at high temperatures.
Handles temperatures up to 600°C for reliable performance.
Eliminates weak points for enhanced safety.
Weldable with standard techniques for easy installation.
Durable for reduced maintenance in high-pressure systems.
| Feature | GB 5310 10Cr9Mo1VNbN | GB 5310 12Cr1MoVG | GB 5310 15CrMoG |
|---|---|---|---|
| Material Type | Low-Alloy Steel (Tempered Martensite) | Pearlitic Alloy Steel | Pearlitic Alloy Steel |
| Temperature Range | ≤600°C | ≤580°C (superheater) | ≤540°C (superheater) |
| Tensile Strength (MPa) | 585–740 | 470–640 | 440–640 |
| Yield Strength (MPa) | ≥415 | ≥255 | ≥295 |
| Weldability | Good (preheating recommended) | Good | Moderate |
| Applications | Ultra-supercritical boilers, petrochemicals | High-pressure boilers | Ultra-supercritical boilers |
| Key Advantage | Superior creep and corrosion resistance | High endurance strength | High thermal strength |
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Note: GB 5310 10Cr9Mo1VNbN seamless boiler tubes comply with GB/T 5310-2017 standards. For detailed specifications, refer to the standards or contact a certified supplier.
GB 5310 10Cr9Mo1VNbN seamless boiler tubes are essential for high-pressure and high-temperature systems in power generation, petrochemicals, and manufacturing, offering superior creep resistance and corrosion resistance at pressures ≥9.8 MPa and temperatures up to 600°C.[](https://www.sunnysteel.com/gb-5310-10cr9mo1vnbn-high-pressure-seamless-boiler-tubes.php)
Handles pressures ≥9.8 MPa for efficient power generation.
Operates reliably up to 600°C for optimal steam production.
Enhances thermal efficiency in high-pressure boiler systems.
Ensures safe high-pressure steam flow up to 600°C.
Supports high-pressure petrochemical processes.
Facilitates efficient heat transfer in industrial systems.
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