ASTM A269 TP304L Superheated Steam Pipes
Material：Stainless Steel
Surface Treatment：Polish, Sandblasting, Pickling
Shape：Round
Technicial：Cold Rolling/Drawing
Outside Diameter：3.18-810mm
Wall Thickness：0.2-40mm
Size：8"-72"(DN200-DN1800)/219.1mm-1829mm
Standard：ASTM A312, ASTM A213, ASTM A269, etc.
Transport Package：with Plastic Caps on Both End, Pack Into Bundle
What is ASTM A269 TP304L superheated steam pipes ?
ASTM A269 TP304L superheated steam pipe is a low-carbon austenitic stainless steel seamless pipe (carbon content ≤ 0.03%) that complies with the American ASTM standard. It is specially designed for high-temperature and high-pressure steam systems. It has excellent resistance to intergranular corrosion, high-temperature strength and processing performance, and is suitable for harsh working conditions such as power station boilers and petrochemical superheaters.
ASTM A269 TP304L power station boiler steam pipe
Advantages of SA 269 TP 304L annealed tubing
ASTM A269 Grade 304L heater tubes vs. TP304 stainless steel tubes
TP304L stainless steel heat exchanger tubes have a lower carbon content (≤0.03% vs. TP304's ≤0.08%), are less likely to precipitate chromium carbide during welding or at high temperatures, and have an intergranular corrosion resistance of more than 50%. When operating for a long time at temperatures above 600°C, the risk of intergranular corrosion is significantly reduced, making them more suitable for steam systems with frequent starts and stops or temperature fluctuations.
What is the maximum temperature and pressure resistance of ASTM A269 Grade TP304L bright annealed tubes?
Temperature range: Long-term use temperature ≤800°C, short-term peak value up to 850°C.
Pressure resistance: The specific pressure depends on the wall thickness, for example: outer diameter 57mm× wall thickness 3.5mm, the allowable stress at 500°C is about 85 MPa (calculated according to ASME BPVC II-D).
Why choose our TP304L superheated steam pipe?
✅ High temperature working condition adaptation: Through long-term pressure resistance test simulating superheated steam environment (600℃, 20 MPa), cumulative operation for more than 10,000 hours without leakage.
✅ Fast delivery: 500 tons of inventory are always available, and it will be shipped directly to the world within 3-7 days after placing an order.
✅ Technical support: Provide steam pipeline stress calculation (including thermal expansion compensation solution) and welding process guidance to reduce the difficulty of engineering design.
Specification of SA 269 TP304L steam locomotive boiler pipes
| Item | Specification |
|---|---|
| Standard | ASME SA-269 |
| Material Grade | TP304L (Low Carbon Austenitic Stainless Steel) |
| Application | Steam locomotive boiler tubes / heat exchanger pipes |
| Manufacturing Process | Seamless or Welded, Annealed |
| Outer Diameter (OD) | 6.0 mm – 50.8 mm (1/4" – 2") |
| Wall Thickness (WT) | 0.5 mm – 3.0 mm (customizable) |
| Length | 5.8 m – 6.1 m (random / fixed lengths available) |
| Surface Finish | Bright Annealed (BA) / Pickled & Passivated |
| Tolerances | OD: ±1.5%, WT: ±10% (per SA-269) |
| Testing | Eddy Current / Hydrostatic / PMI (as required) |
| Delivery Condition | Solution Annealed (Soft, Clean) |
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