Weld Neck Flanges
WNRF flanges for high-pressure and high-temperature pipeline connections.
Flanges
Weld neck, slip-on, blind, socket weld, and threaded flanges in 150# to 2500# pressure classes.
Flanges
Hynox Alloys Solutions is a leading manufacturer, supplier, stockist, and exporter of high-quality Steel Flanges engineered to deliver exceptional performance, strength, and durability across a wide range of industrial applications. We offer an extensive selection of flanges, including Weld Neck Flanges, Slip-On Flanges, Blind Flanges, Socket Weld Flanges, Threaded Flanges, Lap Joint Flanges, Spectacle Blind Flanges, Orifice Flanges, and Long Weld Neck Flanges, manufactured in compliance with international standards.
Our steel flanges are available in Stainless Steel, Carbon Steel, Alloy Steel, Duplex & Super Duplex Steel, Nickel Alloys, Inconel, Monel, Hastelloy, Titanium, and other special alloys. Manufactured using premium-grade raw materials and advanced production techniques, our flanges provide outstanding corrosion resistance, high tensile strength, dimensional accuracy, and reliable performance under high-pressure and high-temperature conditions.
At Hynox Alloys Solutions, quality is our top priority. Every flange undergoes rigorous quality inspections and testing to ensure compliance with ASTM, ASME, ANSI, DIN, EN, BS, and ISO standards. Our experienced team is committed to delivering precision-engineered products that meet the exact requirements of our customers.
With a strong global presence, Hynox Alloys Solutions proudly serves industries such as Oil & Gas, Petrochemicals, Power Generation, Chemical Processing, Pharmaceuticals, Marine, Offshore, Water Treatment, Construction, Infrastructure, and Food Processing. Backed by competitive pricing, timely delivery, and outstanding customer support, we are dedicated to providing reliable steel flange solutions that meet the highest international quality standards.
Product Types
Slip-On Flanges
Economical flanges for low to medium pressure piping systems.
Blind Flanges
Pipeline isolation and hydrotest blind flanges in all pressure classes.
Socket Weld Flanges
Socket weld flanges for small bore high-pressure piping.
Popular Grades & Items
- Stainless Steel 304 Flanges
- Stainless Steel 316 Flanges
- Carbon Steel Flanges
- Inconel 625 Flanges
- Hastelloy C22 Flanges
- Nickel 201 Flanges
- Duplex Steel Flanges
Flanges Technical Specifications
| Parameter | Details |
|---|---|
| Product Form | Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint |
| Size Range | 1/2" NB to 60" NB |
| Pressure Class | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Standards | ASME B16.5, B16.47, B16.48, DIN, EN 1092 |
| Facing Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Bore Type | Standard Bore, Special Bore, Custom Bore |
| Schedule | SCH 10S to XXS (as per pipe matching) |
| Coating | Anti-Rust Oil, Yellow Zinc, Hot Dip Galvanized, PTFE |
| Surface Finish | Machined Face, Serrated Finish, Smooth Finish |
| Manufacturing Process | Forged, Plate Cut, Machined |
| Tolerance | As per ASME B16.5 / B16.47 Standard |
| Testing | PMI, UT, Dimensional, Hydro, Dye Penetrant |
| Certification | EN 10204 3.1 / 3.2, NACE, PED, ISO |
| Packing | Wooden Boxes, Pallets, Export Packing, Plastic Caps |
| Origin | Indian, European, Japanese, Korean Mills |
| Applications | Oil & Gas, Petrochemical, Power, Marine, Pharma |
| Available Grades | SS, CS, Alloy Steel, Duplex, Super Duplex, Nickel Alloys |
| Inspection | Third Party Inspection Available |
| Supply Condition | Ready Stock / Custom Manufacturing |
Weld Neck Flanges
Weld Neck Flanges (WNRF) are designed with a long tapered hub that provides smooth stress distribution and exceptional strength. They are the preferred choice for critical applications involving high pressure, cyclic loading, and elevated temperatures.
Features
- Excellent structural strength
- Superior fatigue resistance
- Smooth flow transition
- Ideal for high-pressure and high-temperature services
- Suitable for critical process piping
Slip-On Flanges
Slip-On Flanges (SORF) are easy to install and provide a cost-effective solution for low to medium pressure applications. They slide over the pipe before welding, making alignment and installation quick and efficient.
Features
- Easy installation and alignment
- Economical for general-purpose applications
- Good mechanical performance
- Suitable for low and moderate pressure systems
- Available in multiple pressure classes
Blind Flanges
Blind Flanges are used to seal the ends of piping systems, pressure vessels, and valves while allowing future access for maintenance, inspection, or system expansion. Their solid construction ensures maximum sealing performance under demanding conditions.
Features
- Leak-proof pipeline closure
- High pressure capability
- Easy access for maintenance
- Excellent structural integrity
- Suitable for hydrostatic testing and isolation
Socket Weld Flanges
Socket Weld Flanges (SWRF) are designed for small-diameter, high-pressure piping systems. The pipe fits into the socket before fillet welding, providing a strong connection with excellent alignment and reduced leakage risk.
Features
- Ideal for small-bore piping
- Strong and reliable welded connection
- Excellent pressure resistance
- Easy installation and accurate alignment
- Suitable for steam, hydraulic, and process piping
Why Choose Our Flanges?
- Manufactured from premium-quality certified raw materials
- Precision machining for accurate dimensions and superior sealing
- Available in Stainless Steel, Duplex Steel, Super Duplex Steel, Nickel Alloys, Titanium, Alloy Steel, Carbon Steel, Copper Nickel, and other specialty materials
- Manufactured in accordance with ASTM, ASME, ANSI, DIN, EN, BS, JIS, and MSS standards
- Available in RF, FF, RTJ, Tongue & Groove, and Ring Type Joint facing options
- Pressure ratings from Class 150 to Class 2500 and PN series
- Full material traceability with comprehensive inspection and testing
- Export-quality packaging for safe global delivery
Our comprehensive range of Industrial Flanges, including Weld Neck, Slip-On, Blind, and Socket Weld Flanges, is engineered to deliver outstanding strength, leak-proof sealing, and long-term reliability for the world's most demanding piping systems. Every flange undergoes strict quality inspections to ensure compliance with international standards and customer specifications.