ASTM A335 P91 Alloy Steel Seamless Boiler Tube with 610mm OD and 30mm WT for High Pressure Power Plant Applications
Price:
USD 1800-2500 / Ton
MOQ:
5 Tons
Delivery Time:
15-30 working days after order confirmation
Brand:
WNRLN
Product Description
ASTM A335 P91 Alloy Steel Seamless Boiler Tube
ASTM A335 P91 (9Cr-1Mo-V) is a creep strength enhanced ferritic (CSEF) alloy steel specifically developed for high-temperature service in ultra-supercritical (USC) power plants. With excellent oxidation resistance up to 650°C and superior creep rupture strength, these seamless boiler tubes are the industry standard for superheater, reheater, and main steam piping applications.
Key Features
- Enhanced Creep Strength: Vanadium and niobium microalloying provides superior long-term creep resistance at elevated temperatures
- Large Diameter Capability: Available up to 610mm OD with 30mm wall thickness for high-pressure steam circuits
- Full NDT Coverage: 100% ultrasonic testing, eddy current inspection, and hydrostatic pressure testing per ASME SA335 specification
- Normalized and Tempered: Precise heat treatment ensures uniform martensitic microstructure and optimal mechanical properties
- Traceability: Full mill test certificates with heat number traceability from steelmaking to final delivery
Material Specifications
| Property | Value |
|---|---|
| Grade | ASTM A335 P91 / ASME SA335 P91 |
| Chemical Composition | C: 0.08-0.12, Mn: 0.30-0.60, Cr: 8.00-9.50, Mo: 0.85-1.05, V: 0.18-0.25 |
| Tensile Strength | ≥585 MPa |
| Yield Strength | ≥415 MPa |
| Elongation | ≥20% |
| Hardness | ≤250 HB |
Applications
- Ultra-supercritical boiler superheaters
- Reheaters
- Main steam piping
- High-temperature headers
- Pressure parts in thermal power plants operating at steam temperatures up to 620°C
Quality Assurance
All tubes undergo rigorous inspection including PMI (Positive Material Identification), dimensional verification, 100% UT/ET, and hydrostatic testing. Third-party inspection by SGS, BV, TUV, or Lloyd's Register available upon request.
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Company
ZHANGJIAGANG HUA DONG ENERGY TECHNOLOGY CO.,LTD
Location
Rm. 1202, Buildiing A, Wanda Plaza, Zhangjiagang, Jiangsu, China
Contact Person
Yolanda Zou