Flanges & fittings for power generation: thermal, nuclear-adjacent balance-of-plant, F11/F22/F91 alloy steel for high-temp steam service. Quote in 30 min.
Forged alloy steel flanges engineered for high-pressure, high-temperature (HPHT) main steam lines, superheater headers, feed-water piping, and balance-of-plant systems in thermal and CCGT power plants.
| Material Grade | Specific Application & Fluid Service |
|---|---|
| ASTM A182 F91 (9Cr-1Mo-V) | Ultra-supercritical steam lines to 650°C |
| ASTM A182 F11 / F22 | High-temperature steam lines up to 593°C |
| ASTM A105N / A350 LF2 | Balance-of-plant feed water lines |
Every flange manufactured for Power Generation Industry Flanges is forged from 100% prime tested steel billets with complete melt-heat traceability. Remax Forge performs Spectro chemical analysis, tensile testing, yield strength verification, elongation measurement, and Brinell or Vickers hardness checks according to ASTM A105, A182, A350, and ASME Section II standards.
For critical fluid handling and high-pressure duties, we execute Positive Material Identification (PMI) testing using calibrated XRF analyzers, Charpy V-notch impact testing at design minimum temperatures (down to -46°C for A350 LF2 or cryogenic conditions for austenitic alloys), and grain size examination compliant with ASTM E112.
Non-destructive examination (NDE) procedures including 100% Ultrasonic Testing (UT) for internal defect detection, Liquid Penetrant Inspection (LPI), and Magnetic Particle Inspection (MPI) are conducted per ASME Section V specifications.
Every dispatch is accompanied by an EN 10204 Type 3.1 Mill Test Certificate (MTC) detailing complete chemical, mechanical, and heat-treatment batch records. Independent third-party inspection (TPI) by global authorities including Lloyd's Register, Bureau Veritas, DNV-GL, TÜV, and SGS is routinely facilitated upon project requisition.
A: F91 (modified 9Cr-1Mo-V) is the standard choice for the highest-temperature ultra-supercritical steam circuits up to 650°C. F11/F22 Cr-Mo grades cover moderate elevated-temperature sections.
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