TP304 Tube for Construction of High-Pressure Power Station Boilers
Jun 11, 2025
Leave a message
When it comes to high-pressure boiler construction, choosing the right tubing material is critical for long-term safety, corrosion resistance, and pressure performance. TP304 stainless steel tubes, specified under ASTM A213, are a popular and cost-effective option for power station boiler tubing, especially in environments where both high temperature and corrosion resistance are required.
What Is TP304 Stainless Steel Tube?
TP304 (UNS S30400) is an austenitic stainless steel with the following composition: 18% Chromium, 8% Nickel, with excellent resistance to oxidation and thermal cycling, and good mechanical properties up to ~870°C (1600°F). ASTM A213 TP304 seamless pipe is most commonly used in boiler heat exchangers, superheaters, and steam piping.
Why Use TP304 Tubes for Power Station Boilers?
High-pressure boilers in thermal and nuclear power plants operate under extreme conditions:
Temperatures above 500°C
Pressures exceeding 100 bar
Corrosive steam and feedwater environments
TP304 tubes are chosen for:
✅ Creep strength at elevated temperatures
✅ Resistance to scaling and thermal fatigue
✅ Good weldability for field installation and repairs
✅ Availability in seamless, straight-length formats
TP304 stainless steel tube for power plant
Boiler water walls and superheaters
Steam pipelines and headers
Pre-heaters and economizers
Turbine heat exchange tubing
Note: While TP304 is adequate for moderate high-pressure boilers, in ultra-supercritical systems, TP316, TP321, or TP347H may be required depending on chloride levels and temperature limits.
ASTM A213 TP304 high-pressure boilers pipe Specifications
| Parameter | Value |
|---|---|
| Standard | ASTM A213 / ASME SA213 |
| Grade | TP304 (UNS S30400) |
| Tube Type | Seamless (required for boiler use) |
| Size Range | OD: 6 – 101.6 mm; WT: 0.5 – 5 mm |
| Tensile Strength | ≥ 515 MPa |
| Yield Strength | ≥ 205 MPa |
| Elongation | ≥ 35% |
| Heat Treatment | Mandatory solution annealing |
| Non-Destructive Testing | Eddy current or hydrostatic testing required |
| Certification | EN 10204 3.1 / 3.2; PED, ASME, IBR optional |
Comparison with Other Boiler Tube Grades
| Grade | Max Temp | Corrosion Resistance | Cost | Use Case |
|---|---|---|---|---|
| TP304 | ~870°C | Good | $ | General boiler tubing |
| TP316 | ~870°C | Higher (molybdenum added) | $$ | Chloride-rich steam |
| TP321 | ~870°C | Similar (titanium-stabilized) | $$ | Post-weld stability |
| TP347H | ~900°C | Higher + creep resistance | $$$ | Superheater tubing |
Why Choose TP304 austenitic boiler tubes for steam systems?
🔩 Reliability under thermal cycling and high pressure
🌊 Good resistance to oxidizing and mildly corrosive steam
🧰 Easily weldable and maintainable in the field
💰 Cost-effective compared to higher alloy grades
📑 Globally certified with ASME, EN, ISO, and PED standards
📩 Need ASTM A213 TP304 Boiler Tubes?
We offer TP304 seamless stainless steel boiler tubes with:
OD & wall thickness per ASME or EN standards
Hydro / eddy current testing
Third-party inspection (TÜV, BV, SGS)
Ready stock or custom mill order
Contact us now to request MTC, datasheet, or project support.
Send Inquiry