Products Description
Product Specifications
| Standards | ASTM A213 / ASME SA213 |
| Steel Grades |
TP201 TP202 TP304 TP304L TP304H TP309S TP309H TP310S TP316 TP316L TP317 TP321 TP347 TP347H TP348 TP348H TP444 T2 T5 T5b T5c T9 T11 T12 T17 T21 T22 T23 T24 T36 T91 |
| Equivalent Standards | EN 10216-5, JIS G3463, DIN 17459 |
| Outer Diameter (OD) | 6.0 mm – 127.0 mm |
| Wall Thickness (WT) | 0.4 mm – 12.7 mm |
| Length | Up to 24 meters |
| Surface Treatment | Pickled |
| Production Process | Cold Drawn |
| Condition | Solution Annealed |
ASTM A213 Seamless Stainless Boiler Tube is manufactured using austenitic stainless steel grades-such as TP304H, TP316L, and TP347H-and undergoes pickling and passivation treatments. These tubes exhibit excellent corrosion resistance, capable of withstanding the corrosive effects of media such as steam, condensate, and flue gas within power generation systems.
The tubing is subjected to precision cold drawing, resulting in an outer diameter tolerance of ≤ ±0.05 mm and a wall thickness tolerance of ≤ ±10%. Compared to carbon steel tubes-such as those specified under ASTM A192 or ASTM A210-ASTM A213 stainless steel maintains superior mechanical strength at elevated temperatures, with the TP347H grade capable of withstanding temperatures up to 700°C.
Customized Services
- TORICH offers U-bending services, incorporating simultaneous solution heat treatment after bending to ensure that wall thickness is not reduced at the bend section.
- We provide customized end finishes-including plain ends, mitered ends, threaded ends, internal chamfers, and weld-prep bevels-designed for seamless compatibility with automated welding systems.
Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Ni | Ti | Nb+Ta |
|---|---|---|---|---|---|---|---|---|---|
| TP304H (%) | 0.04–0.10 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.0–11.0 | - | - |
| TP321H (%) | 0.04–0.10 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 17.0–19.0 | 9.0–12.0 | ≥5×C to ≤0.70 | - |
| TP347H (%) | 0.04–0.10 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 17.0–19.0 | 9.0–13.0 | - | ≥10×C to ≤1.10 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (0.2%, MPa) | Elongation (%) | Hardness (HB) |
| TP304H | ≥515 | ≥205 | ≥35 | ≤90 |
| TP321H | ≥515 | ≥205 | ≥35 | ≤90 |
| TP347H | ≥515 | ≥205 | ≥35 | ≤90 |
Possible Alternative Grades
- For supercritical and ultra-supercritical thermal power units operating at temperatures of 600°C or higher, T92 and TP317L are suitable choices.
- For conventional medium-temperature, medium-pressure thermal power units, T22 and TP304 are recommended for their excellent cost-effectiveness.
- TP347HFG demonstrates oxidation-scale spalling resistance in high-temperature steam (580–620°C) that is far superior to that of TP347H, thereby effectively preventing scale-induced blockages.
application areas
ASTM A213 seamless stainless steel boiler tubes are widely utilized in various power generation facilities, including:
- Utility Boilers
- Superheaters
- Reheaters
- Heat Recovery Steam Generators (HRSG)
- Ultra-supercritical Boilers
- Steam Piping
- Boiler Economizers
- Biomass Power Plants
- Waste-to-Energy Plants
- Auxiliary Thermal Systems in Nuclear Power Plants
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What temperature and pressure ranges are ASTM A213 seamless stainless steel boiler tubes suitable for within the power generation sector?
A: ASTM A213 seamless stainless boiler tubes are typically used in power generation from -20°C to 800°C and 0.1 MPa to 30 MPa, depending on grade selection and service conditions.
Q: Why TP304 is not used, and TP304H is preferred?
A: TP304 has ≤0.08% carbon and is not optimized for long-term high-temperature creep resistance. TP304H has controlled higher carbon (0.04–0.10%), improving high-temperature strength and making it suitable for steam service above ~550°C.
Q: Are hydrostatic testing and non-destructive testing performed prior to delivery?
A: Yes. All tubes undergo 100% hydrostatic testing, as well as eddy current testing (ECT) and ultrasonic testing (UT), to ensure there are no leaks or internal defects before shipment.
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