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Help CenterSteel Pipe & Tube & High Pressure Boiler Tube，ASME SA213、ASTM A335、DIN 17175
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High Pressure Boiler Tube Product Specification
High pressure boiler tubes are special seamless steel pipes for boilers working under high pressure and above. They serve high-temperature and high-pressure conditions of 450–650℃ and pressure over 9.8MPa. Main materials include carbon steel and low-alloy heat-resistant steel. Manufactured in accordance with GB/T 5310-2023, they act as core pressure-bearing components for power station and industrial boilers.
1. Implementation Standards
Domestic Standard: GB/T 5310-2023
International Equivalent Standards: ASME SA213, ASTM A335, DIN 17175
2. Material Grade & Chemical Composition
20G Carbon Steel
Composition: C 0.17–0.24, Si 0.17–0.37, Mn 0.35–0.65, S≤0.020, P≤0.025Features: Low cost, excellent weldabilityApplication: Working condition ≤480℃, ≤10MPa; economizer, low-temperature superheater, steam pipeline
15CrMoG Low Alloy Steel
Composition: C 0.12–0.18, Si 0.17–0.37, Mn 0.40–0.70, Cr 0.80–1.10, Mo 0.40–0.55Features: Good creep resistance and oxidation resistanceApplication: Working condition ≤540℃, 10–14MPa; high-temperature superheater, reheater, main steam pipe
12Cr1MoVG Low Alloy Steel
Composition: C 0.08–0.15, Si 0.17–0.37, Mn 0.40–0.70, Cr 0.90–1.20, Mo 0.25–0.35, V 0.15–0.30Features: Superior high-temperature strength and stable grain structureApplication: Working condition ≤570℃, 17–20MPa; super-high pressure boilers, supercritical boiler key parts
P91 High Alloy Steel
Composition: Cr 8.0–9.5, Mo 0.85–1.05, W 1.5–2.0, V 0.18–0.25, Nb 0.06–0.10Features: Outstanding high temperature bearing capacityApplication: Working condition ≤600℃, 25–30MPa; supercritical and ultra-supercritical boiler pipelines
3. Common Specifications
Outer Diameter: 16–630mm
Wall Thickness: 2.0–100mm
Length: 4–12m, customized length available
Weight Formula: W(kg/m)=0.02466×(OD-WT)×WT
4. Production Process
Raw round steel billet → Heating → Piercing → Hot rolling → Sizing → CoolingOptional cold rolling & bright annealing for high precision surfaceHeat treatment, straightening, nondestructive testing, cutting, surface treatment, final inspection and packaging
5. Mechanical Properties
| Grade | Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) | Impact Energy(J) |
|---|---|---|---|---|
| 20G | 430–550 | ≥265 | ≥24 | ≥35 |
| 15CrMoG | 440–640 | ≥295 | ≥22 | ≥35 |
| 12Cr1MoVG | 470–640 | ≥345 | ≥21 | ≥35 |
| P91 | ≥585 | ≥415 | ≥20 | ≥41 |
6. Core Performance
Excellent high-temperature lasting strength, anti-oxidation capability and structural stability.100% ultrasonic inspection and hydrostatic pressure test conducted for each pipe.
7. Application Scope
Power station boilers, industrial high-pressure boilers, waste incineration boilers, petrochemical high-temperature pressure vessels and heat exchanger pipelines.
8. Packaging & Certification
Products bundled with anti-rust coating. Each tube marked with grade, size, standard, batch number and production info. Complete official quality certificate provided.
9. Delivery
Delivery Lead Time: 5-7 working days
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