Flange Fittings
Weld Neck Flanges
Precision-engineered weld neck flanges developed for secure, high-strength pipe connections and demanding industrial, process and high-pressure piping applications.
Product Type:
Weld Neck Flanges / WNRF Flanges
Size Range:
1/2" NB to 48" NB
Standards:
ASME / ANSI / ASTM
Pressure Class:
150 to 2500 LBS
Application:
Industrial, Process & High-Pressure Piping
About This Product
Weld Neck Flanges
GS MetalFit supplies weld neck flanges for piping systems where dependable connections, structural strength and controlled stress distribution are important. The extended tapered hub of a weld neck flange provides a smooth transition between the flange and pipe, making this flange type suitable for demanding service conditions.
Our weld neck flange range is available in stainless steel, carbon steel, alloy steel, duplex and super duplex steel, nickel alloys and cupro nickel materials. Different sizes, pressure classes, flange faces, material grades and dimensional requirements can be supplied according to project specifications.
Weld neck flanges are commonly selected for high-pressure, high-temperature and critical piping systems where a robust welded connection is required.
The range includes slip on, SORF and slip on plate flange configurations available in stainless steel, duplex, super duplex, carbon steel, alloy steel, nickel alloys and cupro nickel grades. Products can be supplied in different sizes, pressure classes, face types, materials and dimensions according to specified project requirements.
Product Forms
WNRF Flange
Weld Neck Raised Face Flange
Weld Neck Flat Face Flange
Weld Neck RTJ Flange
Stainless Steel Weld Neck Flange
Carbon Steel Weld Neck Flange
Alloy Steel Weld Neck Flange
Duplex Steel Weld Neck Flange
Super Duplex Weld Neck Flange
Nickel Alloy Weld Neck Flange
Cupro Nickel Weld Neck Flange
Technical Specifications
Materials & Grades
Stainless Steel Weld Neck Flanges
Available in ASTM A182 / A240 grades including F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H and 904L.
Duplex & Super Duplex Steel Weld Neck Flanges
Available in ASTM / ASME A/SA182 grades including F44, F45, F51, F53, F55, F60, F61, 2205 (UNS S31803) and 2507 (UNS S32750).
Carbon Steel Weld Neck Flanges
Available in ASTM / ASME A/SA105, A350, A181 LF2, A516 Grade 70, A36 and A694 grades including F42, F46, F52, F60, F65, F70, LF2 and LF3.
Alloy Steel Weld Neck Flanges
Manufactured according to applicable ASTM / ASME specifications including A/SA182 and A387 grades F1, F5, F9, F11, F12, F22 and F91.
Copper & Cupro Nickel Weld Neck Flanges
Available in selected copper and copper-nickel grades including UNS C10100, C10200, C10300, C10800, C12000, C12200, C70600 and C71500, including Cu-Ni 90/10 and Cu-Ni 70/30.
Nickel Alloy Weld Neck Flanges
Available in ASTM / ASME SB564, SB160, SB472 and SB162 materials including Nickel 200, Nickel 201, Monel 400, Monel K500, Inconel 600, Inconel 601, Inconel 625, Inconel 800, Inconel 825, Hastelloy C276 and Alloy 20.
Applications
Process Piping
Oil & Gas Industries
Chemical & Petrochemical Plants
Power Generation Projects
Refineries & Industrial Plants
Marine & Offshore Applications
General Engineering & Fabrication
Why Choose GS MetalFit?
Wide Material Selection
Weld neck flanges are available in stainless steel, carbon steel, alloy steel, duplex, super duplex, nickel alloys and cupro nickel grades.
Multiple Pressure Classes
Products can be supplied in pressure classes ranging from 150 LBS to 2500 LBS according to project requirements.
Different Face Configurations
Flat Face, Raised Face and Ring Type Joint options can be supplied for different piping arrangements.
Project-Based Specifications
Size, material, dimensions, pressure class and applicable standards can be selected according to customer drawings and technical requirements.
Industrial Applications
Suitable flange solutions for process, chemical, petrochemical, oil and gas, power and general industrial piping systems.
Weld Neck Flanges Manufacturer & Supplier
GS MetalFit supplies Weld Neck Flanges and WNRF Flanges for industrial and critical piping applications where a strong and reliable flange-to-pipe connection is required. The tapered hub design helps provide a gradual transition from the flange to the pipe and is commonly used in systems exposed to higher pressure, temperature and mechanical loading.
Our weld neck flange range includes stainless steel, carbon steel, alloy steel, duplex, super duplex, nickel alloy and cupro nickel materials. Flanges can be supplied in different sizes, pressure classes and face configurations to match specified piping requirements.
Weld Neck Flanges are available with Raised Face (RF), Flat Face (FF) and Ring Type Joint (RTJ) configurations. Depending on the project, products can be supplied according to ASME B16.5, ASME B16.47, MSS SP-44, API 605, AWWA and other applicable standards.
GS MetalFit supports requirements for Weld Neck Flanges used in oil and gas facilities, refineries, chemical plants, petrochemical systems, power projects, process industries and general engineering applications.
Our slip on flanges are available in stainless steel, duplex and super duplex steel, carbon steel, alloy steel, nickel alloys and cupro nickel grades. Products can be supplied with Flat Face, Raised Face and Ring Type Joint configurations according to specified requirements.
Slip on flanges are suitable for piping systems where practical flange installation and reliable pipe connections are required. Size, pressure class, material grade, flange face and applicable standard can be selected according to project specifications.
GS MetalFit supports enquiries for slip on and SORF flanges used in industrial piping, process systems, chemical and petrochemical applications, oil and gas, power projects, fabrication and general engineering requirements.
The range includes slip on, SORF and slip on plate flange configurations available in stainless steel, duplex, super duplex, carbon steel, alloy steel, nickel alloys and cupro nickel grades. Products can be supplied in different sizes, pressure classes, face types, materials and dimensions according to specified project requirements.
Stainless Steel Weld Neck Flanges
GS MetalFit supplies stainless steel Weld Neck Flanges in commonly specified grades such as 304, 304L, 316, 316L, 321, 321H, 347, 347H and 904L. These flanges can be selected for applications requiring corrosion resistance and dependable performance in industrial piping systems.
Carbon Steel & Alloy Steel Weld Neck Flanges
Carbon steel and alloy steel WNRF flanges are available for applications where mechanical strength and pressure-handling capability are important. Material options include ASTM A105, A350, A182 and A387 grades, subject to project requirements.
Duplex, Super Duplex & Nickel Alloy Weld Neck Flanges
For demanding environments, GS MetalFit supplies duplex, super duplex and nickel alloy weld neck flanges in grades such as UNS S31803, UNS S32205, UNS S32750, Nickel 200, Monel 400, Inconel 600, Inconel 625, Inconel 825, Hastelloy C276 and Alloy 20.
These material options can be considered for applications involving corrosion, aggressive process media, elevated temperatures and other specialized operating conditions.
Weld Neck Flanges for Global Industrial Requirements
GS MetalFit supplies Weld Neck Flanges for domestic and international project requirements. Products can be prepared according to specified material grades, dimensions, pressure classes, flange faces, standards and customer drawings.
Whether the requirement is for stainless steel WNRF flanges, carbon steel weld neck flanges, duplex weld neck flanges, nickel alloy WNRF flanges or customized flange specifications, GS MetalFit can support product enquiries for a wide range of industrial piping applications.
These material options can be considered for applications involving corrosion, aggressive process media, elevated temperatures and other specialized operating conditions.