High-Performance Alloy and Super Duplex Flanges Delivered to Singapore
Haihao Group has successfully completed the shipment of high-performance threaded and weld neck flanges to a customer in Singapore. The order includes nickel alloy threaded flanges and super duplex stainless steel RTJ flanges, all manufactured in full compliance with ASME B16.5 requirements.
These flanges are designed for demanding service conditions involving high pressure, corrosion, and critical sealing performance, reflecting Haihao Group’s strong capability in supplying special alloy and duplex flange solutions for international projects.
ASTM A182 F55 super duplex weld neck RTJ flanges SCH 80S Class 2500
Flange Types and Technical Details
Threaded Reducing Flange (RF × NPT)
One part of the shipment consists of reducing threaded flanges manufactured from ASTM B564 UNS N06625 (Inconel 625). This nickel-based alloy provides exceptional resistance to corrosion, oxidation, and high-temperature environments.
Key specifications:
- Type: Threaded Flange, RF × NPT(F)
- Size: 1″ × 1/2″
- Pressure Class: Class 300
- Standard: ASME B16.5
- Material: ASTM B564 UNS N06625
These UNS N06625 threaded flanges are widely used in chemical processing, offshore systems, and high-reliability piping connections where welding is not preferred.
Weld Neck RTJ Flange – Super Duplex Stainless Steel
The shipment also includes weld neck ring-type joint (RTJ) flanges produced from ASTM A182 Grade F55 super duplex stainless steel. With SCH 80S wall thickness and a high-pressure rating, these flanges are suitable for severe service applications.
Key specifications:
- Type: Weld Neck Flange, RTJ
- Size: 1″
- Wall Thickness: SCH 80S
- Pressure Rating: Class 2500
- Standard: ASME B16.5
- Material: ASTM A182 Gr. F55
The super duplex F55 RTJ flange offers high mechanical strength and excellent resistance to pitting and stress corrosion cracking, making it ideal for oil & gas and high-pressure piping systems.
Material Advantages for Critical Applications
By combining UNS N06625 nickel alloy flanges with ASTM A182 F55 super duplex flanges, this delivery meets diverse operational requirements, including:
- High pressure and temperature resistance
- Superior corrosion performance in aggressive media
- Reliable sealing for RTJ and threaded connections
- Long service life with reduced maintenance
All flanges were produced under strict quality control to ensure dimensional accuracy, material traceability, and compliance with project specifications.
Trusted Flange Supplier
Haihao Group supplies a full range of ASME B16.5 flanges, including threaded flanges, weld neck flanges, RF and RTJ types, in carbon steel, stainless steel, duplex, super duplex, and nickel alloys. Our products are widely used in:
- Oil and gas facilities
- Petrochemical and chemical plants
- Offshore and marine engineering
- High-pressure industrial piping systems