Super Duplex Steel Long Weld Neck Flanges
Precision-engineered long weld neck flanges for high-pressure and high-temperature applications requiring superior stress distribution.
Price
USD 900 - USD 18,000 Per Ton
Manufacturer & Supplier
Renaissance Pipe Fitting Inc.
Type
Forged, Plate, Machined, Custom Fabricated
Form
Slip On Flanges, Weld Neck Flanges, Socket Weld Flanges, Blind Flanges, Lap Joint Flanges, Threaded Flanges, Long Weld Neck Flanges, Spectacle Flanges, Ring Joint Flanges, Orifice Flanges, Plate Flanges, Customised Flanges
Standards
ASME B16.5, ASME B16.47 Series A, ASME B16.47 Series B, MSS SP-44, API 6A, API 605, EN 1092-1, DIN, BS, JIS, AWWA C207
Our Super Duplex Steel Flanges Variants
Super Duplex Steel Blind Flanges
Super Duplex Steel Lap Joint Flanges
Super Duplex Steel Long Weld Neck Flanges
Super Duplex Steel Orifice Flanges
Super Duplex Steel Plate Flanges
Super Duplex Steel Ring Joint Flanges
Super Duplex Steel Slip On Flanges
Super Duplex Steel Socket Weld Flanges
Super Duplex Steel Spectacle Blind Flanges
Super Duplex Steel Threaded Flanges
Super Duplex Steel Weld Neck Flanges
Super Duplex Steel grades for Flanges
Browse the available grades for Super Duplex Steel used in Flanges.
F53
Premium super duplex stainless steel with outstanding corrosion resistance and high mechanical strength.
Best For
Seawater, offshore and chloride-rich environments
Applications
Subsea systems, offshore platforms, desalination plants, marine equipment
F55
High-alloy super duplex stainless steel offering superior resistance to pitting and crevice corrosion.
Best For
Extreme offshore and aggressive chemical environments
Applications
Oil & gas processing, marine engineering, chemical plants, desalination systems
Industry Standards
International specifications, manufacturing standards, and compliance requirements applicable to this material.
ASTM A182
Forged super duplex stainless steel flanges, fittings, valves and piping components.
ASME SA182
ASME equivalent specification covering forged super duplex steel components.
Long Weld Neck Flanges
Long Weld Neck Flanges are designed for applications involving pressure vessels, storage tanks, and critical piping systems. Their extended neck provides superior reinforcement and stress distribution.
Features
- Extended Neck Design
- Excellent Stress Distribution
- High Pressure Capability
- Superior Mechanical Strength
- Long Service Life
Applications
- Pressure Vessels
- Heat Exchangers
- Storage Tanks
- Offshore Platforms
- Refinery Equipment
Quality Assurance
Available with EN 10204 3.1 certification and third-party inspection.
Industries Served
- Oil & Gas
- Petrochemical
- Refineries
- Power Generation
- Chemical Processing
- LNG
- Offshore
- Marine
- Desalination
- Water Treatment
- Hydrogen
- Mining
- Pharmaceutical
- Food Processing
- Pipeline Infrastructure
- Pulp & Paper
- Renewable Energy
Features
- Precision machined sealing faces
- Raised Face, RTJ and Flat Face options
- Full material traceability
- Custom dimensions available
- Third-party inspection support
- NACE compliant materials available
- Global export packaging
- Custom drilling patterns available
- Dimensional Accuracy
- Corrosion Resistance
- High Efficiency
- Excellent Finish
- Durable Construction
Advantages
- Leak-proof piping connections
- Easy maintenance and inspection
- Suitable for high-pressure systems
- Excellent structural integrity
- Wide range of pressure classes
- Easy assembly and disassembly
- Excellent dimensional accuracy
- Available in all industrial materials
- Long service life
- Cost-effective piping solution
Applications
- Pipeline Systems
- Pressure Vessels
- Heat Exchangers
- Process Piping
- Refineries
- Power Plants
- Chemical Plants
- Offshore Platforms
- LNG Terminals
- Water Treatment Facilities
Inspection & Testing
- PMI Testing
- Dimensional Inspection
- Hydro Testing
- Ultrasonic Testing
- Radiography
- Hardness Testing
- Visual Inspection
- Material Verification
- Third Party Inspection
Manufacturing Process
- Raw Material Inspection
- Forging
- Heat Treatment
- Machining
- Drilling
- Facing Operations
- PMI Testing
- Dimensional Inspection
- Final Inspection
- Packing & Dispatch
Certifications
- EN 10204 3.1
- ISO 9001
- PED
- NACE MR0175
- IBR
- API
Why Choose Us
- 25+ years manufacturing experience
- Complete flange product range
- ASME B16.5 and B16.47 compliant manufacturing
- Worldwide export capabilities
- Fast production lead times
- Third-party inspection support
- Complete material traceability
- Competitive international pricing
- Custom manufacturing available
- Dedicated engineering support