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Help CenterSteel Pipe & Tube & High Pressure Boiler Tube，GB/T 5310-2023, GB/T 8163, GB/T 17395
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Steel Pipe & Tube & High Pressure Boiler Tube，GB/T 5310-2023, GB/T 8163, GB/T 17395NegotiableMOQ: 5 Metric Tons -
Steel Pipe & Tube & High Pressure Boiler Tube，GB/T 5310-2023, GB/T 8163, GB/T 17395NegotiableMOQ: 5 Metric Tons
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Steel Pipe & Tube & High Pressure Boiler Tube，GB/T 5310-2023, GB/T 8163, GB/T 17395NegotiableMOQ: 5 Metric Tons
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Steel Pipe & Tube & High Pressure Boiler Tube，GB/T 5310-2023, GB/T 8163, GB/T 17395NegotiableMOQ: 5 Metric Tons
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Steel Pipe & Tube & High Pressure Boiler Tube，GB/T 5310-2023, GB/T 8163, GB/T 17395NegotiableMOQ: 5 Metric Tons
Detailed Description of High Pressure Boiler Tubes
1. Product Overview
High pressure boiler tube is a kind of key seamless steel pipe used for pressure-bearing parts of high-pressure and ultra-high pressure boilers. It operates continuously under harsh working conditions of high temperature, high pressure and steam corrosion. It is mainly applied to manufacture superheaters, reheaters, main steam pipes, air guide pipes and other components of power station boilers. Strict standards are adopted for material selection, production process and quality inspection, complying with GB/T 5310-2023 national standard.
2. Executive Standards
Domestic Standards: GB/T 5310-2023, GB/T 8163, GB/T 17395
International Equivalent Standards: ASME BPVC, SA-335, DIN 17175, JIS G3467
3. Material Grades & Applicable Working Conditions
Carbon Steel (Operating temperature ≤480℃)
20G: Basic grade steel with stable performance, widely used in water wall tubes and low-temperature section superheater tubes.
Low Alloy Heat-resistant Steel (480℃-580℃)
15CrMoG: Excellent oxidation resistance and creep resistance, suitable for medium-temperature superheaters and reheaters.12Cr1MoVG: High lasting strength, the preferred material for high-temperature reheaters and main steam pipelines.
High Alloy Heat-resistant Steel (≥580℃)
P91 (10Cr9MoW2VNb): Outstanding high-temperature mechanical property, used for ultra-supercritical boiler main steam pipes.12Cr2MoWVTiB: Good high-temperature structural stability, applied in ultra-high temperature pipeline systems.
4. Specification Parameters
Outer Diameter: 10mm-762mm, common sizes: φ38, φ42, φ51, φ60, φ76, φ89, φ108
Wall Thickness: 2mm-120mm, conventional thickness: 4mm-20mm
Length: Fixed length 6m-12m, customized length available
Theoretical Weight Formula: W=0.02466×(OD-WT)×WT
5. Production Technology
Smelting: Electric furnace smelting + LF/VD external refining, strictly control impurity elements
Hot working: Tube billet heating → piercing → hot rolling / cold drawing
Heat treatment: Normalizing and tempering to optimize internal structure
Finishing: Straightening, cutting end, non-destructive testing, hydraulic pressure test, rust prevention treatment
6. Core Technical Requirements
Chemical Composition
Strictly control carbon, silicon, manganese, sulfur, phosphorus and alloy element content in accordance with national standards to ensure stable material performance.
Mechanical Properties
Reach qualified tensile strength, yield strength, elongation and impact toughness at room temperature and high temperature, meet high temperature lasting strength index.
Process Performance
All tubes pass hydraulic pressure test without leakage; pass flaring and flattening test with no cracks.
Full Inspection Non-destructive Testing
100% ultrasonic testing, eddy current testing and surface defect inspection to eliminate internal and external defects.
7. Delivery Status
Carbon steel and low alloy steel are delivered under normalizing and tempering condition; high alloy steel is delivered after quenching and tempering. Surface can be polished, pickled or coated with anti-rust oil as required.
8. Application Fields
Thermal power generation industry: Large-scale power station boiler pressure-bearing pipelines
Petrochemical industry: High temperature and high pressure reaction pipeline, cracking furnace pipe
Industrial boiler field: High pressure steam boiler, waste heat boiler
Nuclear power industry: Conventional island steam delivery system
9. Packaging & Marking
Steel tubes are bundled in standard packing, equipped with plastic pipe caps at both ends for moisture-proof and collision-proof protection.Clear marking including standard number, material grade, specification, heat number, manufacturer logo and production date is printed on each pipe. Complete official quality certificates are provided together with goods.
10. Product Advantages
Excellent high temperature and high pressure resistance, stable organizational structure, no deformation during long-term service
Strong anti-oxidation and steam corrosion resistance, long service life
Strict full-range quality inspection, high operation safety, effectively prevent pipe burst accidents
Complete specifications and customizable sizes to match different boiler operating parameters
11. Purchasing Tips
Prioritize products complying with GB/T 5310-2023 official standard
Select proper steel grade according to actual operating temperature and pressure
Verify complete qualification documents including material test report and inspection records
Check tube surface condition and dimensional tolerance before acceptance
Delivery Information
Delivery cycle: 5-7 working days
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