Place of Origin:
China
Brand Name:
YUHONG
Certification:
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:
ASTM A182 F321H
YUHONG Group is a globally recognized manufacturer specializing in high-performance flanges and pressure vessel components for critical industrial applications. With ISO 9001, ASME, and PED certifications, we deliver engineered solutions for the most demanding operating conditions.
Why Choose YUHONG?
✔ 25+ Years in high-temperature flange manufacturing
✔ Full material traceability with Mill Test Certificates
✔ Custom fabrication for unique project requirements
✔ Global supply chain with fast lead times
YUHONG's ASME SA182 F321H Flanges are specifically engineered for high-temperature service in:
Petrochemical processing
Power generation systems
Refinery applications
Aerospace components
Nuclear power plants
These flanges feature stabilized titanium composition for superior resistance to intergranular corrosion at elevated temperatures (up to 816°C/1500°F).
✔ High-Temperature Performance: Stabilized with titanium for carbide precipitation resistance
✔ Enhanced Strength: Maintains structural integrity under thermal cycling
✔ Full NDT Inspection: 100% UT (Ultrasonic), MT (Magnetic Particle), and PT (Liquid Penetrant) tested
✔ Multiple Standards: Compliant with ASME B16.5, B16.47, and custom specifications
✔ Corrosion Resistant: Excellent performance in oxidizing and mildly reducing environments
| Property | Value | Standard |
|---|---|---|
| Material Grade | ASME SA182 F321H (Ti-stabilized) | ASME BPVC Sec. II |
| Tensile Strength | ≥ 515 MPa (75 ksi) | ASTM A370 |
| Yield Strength | ≥ 205 MPa (30 ksi) | ASTM A370 |
| Elongation | ≥ 30% | ASTM A370 |
| Hardness | ≤ 90 HRB | ASTM E18 |
| Max Operating Temp | 816°C (1500°F) | ASME B16.34 |
| Parameter | Range |
|---|---|
| Size Range | 1/2" to 48" (DN15 to DN1200) |
| Pressure Class | Class 150 to Class 2500 |
| Face Types | RF, FF, RTJ (or custom) |
| Surface Finish | 3.2 μm Ra or better |
| Test Method | Standard | Coverage |
|---|---|---|
| UT (Ultrasonic) | ASTM A388 | 100% volume inspection |
| MT (Magnetic Particle) | ASTM E709 | 100% surface examination |
| PT (Liquid Penetrant) | ASTM E165 | 100% surface inspection |
✅ FCCU and hydrocracker units
✅ Steam headers and superheaters
✅ Heat exchanger systems
✅ High-temperature piping
✅ Boiler and pressure vessel connections
YUHONG implements strict quality control throughout manufacturing:
Raw material verification
In-process dimensional checks
Final NDT inspection
Hydrostatic testing available
Full documentation package
Customization Options Available:
Special sizes outside standard range
Unique facing requirements
Heat treatment variations
Special marking and packaging
Send your inquiry directly to us
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