Top 10 Weld neck flange factory in the World 2025

Are you in the market for high-quality weld neck flanges? Choosing the right factory can make all the difference in your project’s success. By comparing the top manufacturers, you’ll discover reliable options that ensure durability and performance. Dive in to find the best choices for your needs!

Weld Neck Flange Manufacturers – ASME/ANSI WN Flange Factory

Product Details: Weld Neck Flanges are designed to joint a piping system by butt welding, known for their tapered hub and gentle transition from flange thickness to pipe wall thickness. They are typically used in high pressure piping systems under high or low temperature conditions.

Technical Parameters:
– Size: 1/2″ (DN15) ~ 60″ (DN1500)
– Pressure Rating: 150#-2500# (PN6-PN40)

Application Scenarios:
– High pressure piping systems
– Applications requiring examination of the welded area by radiography

Pros:
– Reduces stress concentration from the bottom of the center
– Higher life expectancy than slip-on flanges under duress

Cons:
– Typically more expensive than slip-on flanges
– Requires precise matching with the schedule pipe being used

Western Forge & Flange | Flanges | Custom Forging

Product Details: Western Forge & Flange specializes in manufacturing various types of flanges and custom forgings, including Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint, Stub End, Studding Outlet, Long Weld Neck, and Orifice Set.

Technical Parameters:
– Flange types: Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint, Stub…
– Custom forgings available in Rings (up to 75″ diameter), Bars (up to 48″ length)…

Application Scenarios:
– Nuclear industry applications requiring high-quality flanges
– Oil & Gas industry for onshore, offshore, subsea, midstream, and downstream oper…

Pros:
– Over 75 years of experience in forging and manufacturing
– Wide range of materials available including stainless steel and high nickel allo…

Cons:
– Limited information on specific product pricing
– Potentially long lead times for custom orders

China Stainless Steel Flange, Welding Neck Flange, Slip-On Flange …

Product Details: Stainless steel flanges and pipe fittings manufactured by Wenzhou Shuangneng Valve Co., Ltd., including various types such as blind flanges, welding neck flanges, slip-on flanges, and more, designed for durability and reliability in industrial applications.

Technical Parameters:
– Sizes available: DN10(3/8″) to DN600(24″)
– Material: 304, 316, 316L stainless steel

Application Scenarios:
– Oil and gas industry
– Chemical processing

Pros:
– High corrosion resistance and durability
– Compliant with international standards (CE, ISO9001, TS)

Cons:
– Potentially higher cost compared to carbon steel options
– Requires precise installation to ensure leak-proof performance

Weld Neck Flanges – ZHONGNUO Flange

Product Details: Weld neck flange is the most widely used type in process piping, designed for butt weld connections to pipes. Suitable for high-pressure and temperature applications, available in various steel material grades.

Technical Parameters:
– Dimensions: ASME/ANSI: DN 1/2” – DN 24”, DIN: DN 15 – DN 2000, BS. EN1092: DN 15…
– Pressure ratings: ASME/ANSI: Class 150, 300, 600, 900, 1500, 2500lbs

Application Scenarios:
– Oil and gas industry
– Chemical industry

Pros:
– Suitable for high-pressure and temperature applications
– Available in various material grades including carbon and stainless steel

Cons:
– Requires precise welding for installation
– Higher cost compared to other flange types

Weld Neck Flange | China Hebei Haihao Flange Factory

Product Details: Weld Neck Flange (WN flange) is a flange with a long tapered neck designed for butt welding to pipes, providing high strength reinforcement suitable for high pressure and extreme temperature applications.

Technical Parameters:
– Neck thickness must match the pipe’s outer diameter and wall thickness.
– Available sealing faces: flat face (FF), raised face (RF), and ring type joint (…

Application Scenarios:
– Used in high pressure applications.
– Suitable for high temperature and low temperature situations.

Pros:
– Excellent stress distribution due to tapered neck.
– Easily inspected butt welding joint.

Cons:
– Requires precise matching with pipe dimensions.
– Installation may be more complex compared to other flange types.

Flange JIS B2220 10K,B16.5 welding neck flange dimensions,flangeolet …

Product Details: Welding neck flanges (JIS B2220 10K and ASME B16.5) and flange-olets, manufactured by Hebei Haihao Flange Factory, established in 1982 and located in Mengcun County, Cangzhou City, Hebei Province, China.

Technical Parameters:
– Material grades: ASTM A105, A350 LF2, A516 Gr.70, SS 316L
– Standards: JIS B2220, ASME B16.5, DIN 2576, GOST 33259
– Manufacturing process: Forging, machining, heat treatment, galvanizing
– Quality certifications: API, ABS, ISO 9001-2008, PED 97/23/EC

Application Scenarios:
– Oil and gas industry
– Chemical processing
– Shipbuilding
– Water treatment
– Power plants
– Steam systems
– Construction

Pros:
– Over 30 years of manufacturing experience
– Advanced manufacturing facility with adequate capacity
– High-quality piping products
– On-time delivery
– Excellent customer service
– Wide range of flange types available
– Custom manufacturing capabilities

Cons:
– Limited information about specific product dimensions
– No detailed pricing information provided
– Some technical specifications are not fully detailed

Weld Neck Flanges – mericaforgeinc.com

Product Details: Weld Neck Flanges are designed for high-pressure applications and provide a strong connection between pipes. They feature a long tapered hub that allows for a smooth transition from the flange to the pipe.

Technical Parameters:
– Available in various sizes ranging from 1/2″ to 24″.
– Manufactured with different thicknesses and materials to meet specific pressure…

Application Scenarios:
– Used in oil and gas pipelines.
– Commonly applied in chemical processing and power generation industries.

Pros:
– Provides a strong and reliable connection.
– Suitable for high-pressure and high-temperature applications.

Cons:
– Installation requires precise alignment and welding skills.
– Higher cost compared to other flange types.

Weld Neck Flange,Nozzle Flange Manufacturer and Supplier,Hub Flange

Product Details: Weld Neck Flanges (WNRF) are specialized pipe fittings with a long tapered hub and weld bevel at the end. They are designed for butt welding to pipes and are commonly used in high-stress applications.

Technical Parameters:
– Manufacturing Standards: ASME B16.5, B16.47-A/B, DIN 2573/2631, JIS Flange 5K
– Pressure Ratings: 150LB to 2500LB
– Materials: A105, A350 LF2, A694 F52, 20#, Carbon Steel
– Sizes: Range from 2″ to 34″ (DN50 to DN850)
– Finish: Black painting, standard finish
– Packaging: Plywood cases
– Supply Capacity: 12,000-20,000 tons/year

Application Scenarios:
– High-pressure pipeline systems
– Oil and gas applications
– Boiler pressure vessels
– Petroleum and chemical industries
– Shipbuilding and marine applications

Pros:
– Excellent stress distribution due to long tapered hub
– Reduced turbulence and erosion due to matching pipe bore
– Superior connection strength through butt welding
– Better mechanical properties with A105 steel
– Leak-proof sealing with RTJ (Ring Type Joint) option
– High pressure capability up to 2500LB

Cons:
– Relatively expensive due to long neck design
– Requires precise welding during installation
– More complex manufacturing process
– Heavier than other flange types
– May require special handling during transportation

Weld Neck Flanges Manufacturers, Suppliers, Buy WNRF & WNFF Flanges

Product Details: Weld Neck Flanges available for sale in sizes 1/2″ to 60″ with pressure ratings from 150 to 2500 Class. Manufactured in various standards including ANSI/ASME, BS, DIN, EN 1092-1, and JIS.

Technical Parameters:
– Manufacturing Specification: A182 Forged Weld Neck Flanges
– Materials: ASTM A182 Stainless Steel F309, F310, F317, F321 & F347, ASTM A182 Ch…

Application Scenarios:
– Used for the connection of all kinds of piping systems to convey water, steam, a…
– Widely used for high pressure applications.

Pros:
– More than 3 decades of experience in manufacturing and exporting.
– Complete traceability and certification provided for all products.

Cons:
– Limited to specific sizes and pressure ratings.
– Requires proper welding techniques for installation.

Weld Neck Flanges Manufacturer – Marcel Piping Projects Supply PVT. LTD.

Product Details: Weld Neck Flanges are commonly used in high-pressure and high/low temperature applications, featuring a long inching hub that can be welded with a pipe. They provide an unrestricted inflow of fluid and prevent pressure drops, turbulence, and corrosion.

Technical Parameters:
– Size Range: 1/2″ (15 NB) to 48″ (1200NB)
– Class/Pressure Rating: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN…

Application Scenarios:
– Offshore and Oil Field applications
– Mechanical Systems and Plumbing

Pros:
– Smooth distribution of mechanical stress
– Facilitates radiographic examinations for leak detection

Cons:
– Requires precise matching with connecting pipe dimensions
– Installation may be complex due to welding requirements

Related Video

Comparison Table

Company	Product Details	Pros	Cons	Website
Weld Neck Flange Manufacturers – ASME/ANSI WN Flange Factory	Weld Neck Flanges are designed to joint a piping system by butt welding, known for their tapered hub and gentle transition from flange thickness to pi…	– Reduces stress concentration from the bottom of the center – Higher life expectancy than slip-on flanges under duress	– Typically more expensive than slip-on flanges – Requires precise matching with the schedule pipe being used	www.steelpipesfactory.com
Western Forge & Flange	Flanges	Custom Forging	Western Forge & Flange specializes in manufacturing various types of flanges and custom forgings, including Weld Neck, Slip On, Blind, Socket Weld, Th…	– Over 75 years of experience in forging and manufacturing – Wide range of materials available including stainless steel and high nickel allo…
China Stainless Steel Flange, Welding Neck Flange, Slip-On Flange …	Stainless steel flanges and pipe fittings manufactured by Wenzhou Shuangneng Valve Co., Ltd., including various types such as blind flanges, welding n…	– High corrosion resistance and durability – Compliant with international standards (CE, ISO9001, TS)	– Potentially higher cost compared to carbon steel options – Requires precise installation to ensure leak-proof performance	www.sn-flange.com
Weld Neck Flanges – ZHONGNUO Flange	Weld neck flange is the most widely used type in process piping, designed for butt weld connections to pipes. Suitable for high-pressure and temperatu…	– Suitable for high-pressure and temperature applications – Available in various material grades including carbon and stainless steel	– Requires precise welding for installation – Higher cost compared to other flange types	www.znsteelflange.com
Weld Neck Flange	China Hebei Haihao Flange Factory	Weld Neck Flange (WN flange) is a flange with a long tapered neck designed for butt welding to pipes, providing high strength reinforcement suitable f…	– Excellent stress distribution due to tapered neck. – Easily inspected butt welding joint.	– Requires precise matching with pipe dimensions. – Installation may be more complex compared to other flange types.
Flange JIS B2220 10K,B16.5 welding neck flange dimensions,flangeolet …	Welding neck flanges (JIS B2220 10K and ASME B16.5) and flange-olets, manufactured by Hebei Haihao Flange Factory, established in 1982 and located in…	– Over 30 years of manufacturing experience – Advanced manufacturing facility with adequate capacity – High-quality piping products – On-time delivery…	– Limited information about specific product dimensions – No detailed pricing information provided – Some technical specifications are not fully detai…	www.weldflange.com
Weld Neck Flanges – mericaforgeinc.com	Weld Neck Flanges are designed for high-pressure applications and provide a strong connection between pipes. They feature a long tapered hub that allo…	– Provides a strong and reliable connection. – Suitable for high-pressure and high-temperature applications.	– Installation requires precise alignment and welding skills. – Higher cost compared to other flange types.	www.mericaforgeinc.com
Weld Neck Flange,Nozzle Flange Manufacturer and Supplier,Hub Flange	Weld Neck Flanges (WNRF) are specialized pipe fittings with a long tapered hub and weld bevel at the end. They are designed for butt welding to pipes…	– Excellent stress distribution due to long tapered hub – Reduced turbulence and erosion due to matching pipe bore – Superior connection strength thro…	– Relatively expensive due to long neck design – Requires precise welding during installation – More complex manufacturing process – Heavier than othe…	www.ncmflange.com
Weld Neck Flanges Manufacturers, Suppliers, Buy WNRF & WNFF Flanges	Weld Neck Flanges available for sale in sizes 1/2″ to 60″ with pressure ratings from 150 to 2500 Class. Manufactured in various standards including AN…	– More than 3 decades of experience in manufacturing and exporting. – Complete traceability and certification provided for all products.	– Limited to specific sizes and pressure ratings. – Requires proper welding techniques for installation.	themetalsfactory.com
Weld Neck Flanges Manufacturer – Marcel Piping Projects Supply PVT. LTD.	Weld Neck Flanges are commonly used in high-pressure and high/low temperature applications, featuring a long inching hub that can be welded with a pip…	– Smooth distribution of mechanical stress – Facilitates radiographic examinations for leak detection	– Requires precise matching with connecting pipe dimensions – Installation may be complex due to welding requirements	marcelforged.com

Frequently Asked Questions (FAQs)

What is a weld neck flange and why is it used?

A weld neck flange is a type of flange that has a long neck, which allows for better alignment and stress distribution during welding. It’s commonly used in high-pressure applications, such as pipelines and vessels, because it provides a strong and reliable connection.

What materials are weld neck flanges typically made from?

Weld neck flanges are usually made from materials like carbon steel, stainless steel, and alloy steel. The choice of material depends on the application requirements, including temperature, pressure, and corrosion resistance.

How do I choose the right weld neck flange for my project?

To choose the right weld neck flange, consider factors like the size, pressure rating, and material compatibility with your piping system. It’s also important to assess the operating environment and any specific industry standards that may apply.

Can I customize weld neck flanges for specific applications?

Yes, many factories offer customization options for weld neck flanges. You can request specific dimensions, materials, and pressure ratings to ensure they meet your unique project requirements.

What is the typical lead time for ordering weld neck flanges?

Lead times can vary based on the factory’s production schedule and the complexity of your order. Generally, you can expect a lead time of a few weeks, but it’s best to check directly with the manufacturer for precise timelines.