Weld Neck Flanges
| Specification | Details |
|---|---|
| Product Name | Weld Neck Flanges |
| Material Grade | Carbon Steel / Stainless Steel / Alloy Steel / Nickel Alloys / Titanium / Duplex Stainless Steel, as applicable |
| Material Type | Forged Metallic Flange |
| Manufacturing Type | Forged / Hot Forged / Precision Machined |
| Flange Standard | ASME B16.5 / ASME B16.47 and other applicable standards |
| Material Standards | ASTM / ASME / EN / DIN / JIS and other applicable specifications |
| Size | 1/2″ to 24″ or As per Customer Requirement |
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500, as applicable |
| Connection Type | Butt-Weld Flanged Connection |
| Facing Type | Raised Face / Flat Face / Ring Type Joint, as applicable |
| Bore Type | Standard Bore / Heavy Bore / Customized Bore |
| Neck Type | Long Tapered Hub / Weld Neck Design |
| Surface Finish | Machined / Polished / As Specified |
| Dimensions | As per ASME B16.5 / ASME B16.47 and Customer Requirements |
| Heat Treatment | As per Applicable Material Specification |
| MTC | EN 10204 3.1 / 3.2 |
| Testing | Chemical / Mechanical / Dimensional / Hardness / Visual / PMI and Other Tests as Required |
| Tensile Strength | As per Applicable Material Specification and Grade |
| Yield Strength | As per Applicable Material Specification and Grade |
| Elongation | As per Applicable Material Standard |
| Corrosion Resistance | Depends on the selected material grade and service environment |
| High-Temperature Performance | Depends on material grade and applicable service limits |
| Welding | Suitable for butt welding using appropriate welding procedures for the selected material |
| Fabrication | Suitable for machining and fabrication using grade-specific procedures |
| Dimensional Accuracy | Precision dimensions according to applicable flange standards |
| Customization | Size, Material Grade, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Inspection | Dimensional, Visual and Material Inspection as Required |
| Marking | Size, Grade, Standard, Class, Facing and Heat/Batch Identification as Applicable |
| Origin | European / American / Japanese / Korean and Other Approved Origins |
| Export Supply | Worldwide Weld Neck Flanges Export Supply |
| Exporter Support | Technical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination |
| Applications | Oil & Gas, Petrochemical, Chemical Processing, Power Generation, Marine, Water Treatment, Heat Exchangers and Industrial Process Piping |
1. Most Common Types of Weld Neck Flanges
| Type | Details |
|---|---|
| Standard Weld Neck Flanges | Designed for butt-welded pipe connections and commonly used in industrial piping systems. |
| Long Weld Neck Flanges | Features an extended neck and is suitable for applications requiring additional structural support or extended hub length. |
| Raised Face Weld Neck Flanges | Provides a raised sealing surface for suitable gasketed pipe and equipment connections. |
| Flat Face Weld Neck Flanges | Features a flat sealing surface for applications where this facing configuration is required. |
| Ring Type Joint Weld Neck Flanges | Features an RTJ groove for high-integrity gasketed connections in suitable high-pressure applications. |
| Stainless Steel Weld Neck Flanges | Manufactured from stainless steel for applications requiring corrosion resistance and reliable mechanical performance. |
| Carbon Steel Weld Neck Flanges | Commonly selected for general industrial, oil & gas and process piping applications. |
| Alloy Steel Weld Neck Flanges | Suitable for applications requiring enhanced mechanical properties and elevated-temperature performance. |
| Duplex Weld Neck Flanges | Provides high strength and strong resistance to chloride corrosion, pitting and stress-corrosion cracking. |
| Super Duplex Weld Neck Flanges | Suitable for highly corrosive environments requiring superior pitting, crevice and chloride resistance. |
| Nickel Alloy Weld Neck Flanges | Used in demanding chemical and corrosive applications where specialized nickel alloy performance is required. |
| Titanium Weld Neck Flanges | Suitable for applications requiring low density, high corrosion resistance and a strong strength-to-weight ratio. |
| Customized Weld Neck Flanges | Manufactured according to customer drawings, material grade, dimensions, pressure class, facing, bore, drilling pattern and testing requirements. |
2. Weld Neck Flanges – Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Weld Neck Flanges |
| Material Grade | Carbon Steel / Stainless Steel / Alloy Steel / Nickel Alloys / Titanium / Duplex Stainless Steel, as applicable |
| Material Type | Forged Metallic Flange |
| Manufacturing Type | Forged / Hot Forged / Precision Machined |
| Flange Standard | ASME B16.5 / ASME B16.47 and other applicable standards |
| Material Standards | ASTM / ASME / EN / DIN / JIS and other applicable specifications |
| Size | 1/2″ to 24″ or As per Customer Requirement |
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500, as applicable |
| Connection Type | Butt-Weld Flanged Connection |
| Facing Type | Raised Face / Flat Face / Ring Type Joint, as applicable |
| Bore Type | Standard Bore / Heavy Bore / Customized Bore |
| Neck Type | Long Tapered Hub / Weld Neck Design |
| Surface Finish | Machined / Polished / As Specified |
| Dimensions | As per ASME B16.5 / ASME B16.47 and Customer Requirements |
| Heat Treatment | As per Applicable Material Specification |
| MTC | EN 10204 3.1 / 3.2 |
| Testing | Chemical / Mechanical / Dimensional / Hardness / Visual / PMI and Other Tests as Required |
| Inspection | Dimensional, Visual and Material Inspection as Required |
| Marking | Size, Grade, Standard, Class, Facing and Heat/Batch Identification as Applicable |
| Welding | Suitable for butt welding using appropriate welding procedures for the selected material |
| Fabrication | Suitable for machining and fabrication using grade-specific procedures |
| Dimensional Accuracy | Precision dimensions according to applicable flange standards |
| Customization | Size, Material Grade, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Origin | European / American / Japanese / Korean and Other Approved Origins |
| Export Supply | Worldwide Weld Neck Flanges Export Supply |
| Exporter Support | Technical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination |
| Applications | Oil & Gas, Petrochemical, Chemical Processing, Power Generation, Marine, Water Treatment, Heat Exchangers and Industrial Process Piping |
3. Weld Neck Flanges – Supply & Quality Details
| Parameter | Details |
|---|---|
| Material Identification | As per selected material grade and applicable specification |
| Flange Configuration | Standard Weld Neck / Long Weld Neck / Customized Weld Neck |
| Size Range | 1/2″ to 24″ or As per Requirement |
| Pressure Classes | Class 150 / 300 / 600 / 900 / 1500 / 2500 |
| Applicable Standards | ASME B16.5 / ASME B16.47 and applicable ASTM, ASME, EN, DIN or JIS specifications |
| Facing Options | Raised Face / Flat Face / Ring Type Joint |
| Bore Options | Standard Bore / Heavy Bore / Customized Bore |
| Surface Finish | Machined / Polished / As Specified |
| Heat Treatment | As per Applicable Material Specification |
| Testing | Chemical / Mechanical / Dimensional / Hardness / Visual / PMI / Other Tests |
| Inspection | Dimensional, Visual and Material Inspection |
| Certification | EN 10204 3.1 / 3.2 |
| Marking | Size, Grade, Standard, Class, Facing and Heat/Batch Identification |
| Material Traceability | Heat Number and Batch Identification as Applicable |
| Customization | Material, Size, Pressure Class, Facing, Bore, Dimensions, Drilling Pattern, Finish and Testing |
| Packaging | Export-Worthy Wooden Cases, Boxes, Pallets or Customized Packaging |
| Documentation | MTC, Inspection Reports, Test Certificates and Other Documents as Required |
| Export Supply | Worldwide Weld Neck Flanges Supply |
| Applications | Oil & Gas, Petrochemical, Chemical Processing, Power Generation, Marine, Water Treatment, Heat Exchangers and Industrial Process Piping |
Most Common Types Of Weld Neck Flanges
| Type | Details |
|---|---|
| Standard Weld Neck Flanges | Designed for butt-welded pipe connections and commonly used in industrial piping systems. |
| Long Weld Neck Flanges | Features an extended neck and provides additional support for suitable piping and equipment connections. |
| Raised Face Weld Neck Flanges | Features a raised sealing surface for suitable gasketed piping and equipment connections. |
| Flat Face Weld Neck Flanges | Provides a flat sealing surface for applications requiring this particular facing configuration. |
| Ring Type Joint Weld Neck Flanges | Features an RTJ groove for high-integrity gasketed connections in suitable high-pressure applications. |
| Stainless Steel Weld Neck Flanges | Manufactured from stainless steel for applications requiring corrosion resistance and reliable mechanical performance. |
| Carbon Steel Weld Neck Flanges | Commonly used in general industrial, oil & gas and process piping applications. |
| Alloy Steel Weld Neck Flanges | Suitable for applications requiring enhanced mechanical properties and elevated-temperature performance. |
| Duplex Weld Neck Flanges | Provides high mechanical strength and strong resistance to chloride corrosion, pitting and stress-corrosion cracking. |
| Super Duplex Weld Neck Flanges | Suitable for highly corrosive environments requiring superior resistance to pitting, crevice and chloride corrosion. |
| Nickel Alloy Weld Neck Flanges | Used in demanding chemical and corrosive applications requiring specialized nickel alloy performance. |
| Titanium Weld Neck Flanges | Suitable for applications requiring low density, high corrosion resistance and a strong strength-to-weight ratio. |
| Customized Weld Neck Flanges | Manufactured according to customer drawings, material grade, dimensions, pressure class, facing, bore, drilling pattern and testing requirements. |
Why Should You Buy Weld Neck Flanges from Metalx Nickel & Alloys?
- Experienced Weld Neck Flanges Supplier & Exporter serving international buyers, importers, distributors, EPC contractors, stockholders, traders and industrial end users.
- 20+ Years of Flange & Alloy Industry Experience in supplying and exporting high-performance, corrosion-resistant and specialty alloy flanges to customers across the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Africa, Europe, Asia and other global markets.
- Specialized Weld Neck Flanges Exporter offering Weld Neck Flanges in carbon steel, stainless steel, alloy steel, nickel alloys, titanium, duplex and other suitable materials according to applicable international standards and customer requirements.
- Global Weld Neck Flanges Sourcing Network with access to reputed mills, manufacturers, authorized suppliers and approved stockholders across the USA, Europe, Japan, South Korea and other major international supply markets.
- Reliable Weld Neck Flanges Supplier providing flanges for demanding piping systems requiring high structural strength, reliable butt-welded connections, good stress distribution, dimensional accuracy and dependable performance under suitable pressure and temperature conditions.
| Key Feature | Details |
|---|---|
| Long Tapered Hub | Provides improved stress distribution between the flange and connected pipe. |
| High-Pressure Suitability | Suitable for demanding piping systems operating under significant pressure. |
| High-Temperature Applications | Can be selected for high-temperature industrial services according to the material grade and design requirements. |
| Strong Butt-Welded Connection | The butt-weld configuration provides a strong and reliable pipe-to-flange joint. |
| Multiple Pressure Classes | Available in Class 150, 300, 600, 900, 1500 and 2500 configurations. |
| Multiple Facing Options | Available with Raised Face (RF), Flat Face (FF) and Ring Type Joint (RTJ) facings. |
| Wide Material Selection | Can be supplied in carbon steel, stainless steel, duplex, super duplex, nickel alloys and other special alloys. |
| International Standards | Manufactured according to applicable ASME, EN and customer-specified standards. |
| Corrosive Service Suitability | Special alloy and stainless-steel grades can be selected for demanding corrosive environments. |
| Dimensional Accuracy | Machined dimensions, bore and flange faces can be produced according to applicable requirements. |
| Custom Manufacturing | Size, grade, pressure class, facing, bore, dimensions and finish can be customized. |
| Industrial Versatility | Used across oil & gas, chemical, petrochemical, refinery, power and process industries. |
| Inspection & Documentation | Material certificates and inspection documents can be provided according to project requirements. |
| Specification | Details |
|---|---|
| Product Name | Weld Neck Flanges |
| Manufacturing Standard | ASME B16.5 / ASME B16.47 and other applicable standards |
| International Standard | EN 1092-1 and Customer-Specified Standards |
| Pressure Classes | Class 150 / 300 / 600 / 900 / 1500 / 2500 |
| Material Options | Carbon Steel / Stainless Steel / Duplex / Super Duplex / Nickel Alloys and Other Special Alloys |
| Common Stainless Grades | 304/304L / 316/316L / 321 / 347/347H |
| Nickel Alloy Options | Inconel / Incoloy / Hastelloy / Monel and Other Nickel-Based Alloys |
| Facing Types | Raised Face (RF) / Flat Face (FF) / Ring Type Joint (RTJ) |
| Connection Type | Butt Weld |
| Size Range | As per Applicable Standard and Customer Requirement |
| Surface Finish | As per Applicable Standard or Customer Specification |
| Manufacturing Type | Forged / Machined as Applicable |
| Neck Design | Long Tapered Hub for Improved Stress Distribution |
| Bore Type | Standard Bore / Heavy Bore / Customized Bore |
| Dimensions | As per Applicable Standard and Customer Requirements |
| Testing | Dimensional / Chemical / Mechanical and Other Applicable Tests |
| Inspection | As per Standard / Project Specification / Customer Requirement |
| Documentation | Material Test Certificates and Inspection Documents as Applicable |
| Customization | Material Grade / Size / Pressure Class / Facing / Bore / Dimensions / Finish |
| Applications | Oil & Gas / Chemical / Petrochemical / Refinery / Power / Marine / Process Industries |
1. What are Weld Neck Flanges?
Weld Neck Flanges are flanges with a tapered hub designed for butt-welded connections . They are commonly used in piping systems where strength, alignment and reliable performance are important.
2. What standards are used for Weld Neck Flanges?
Weld Neck Flanges are commonly manufactured according to ASME B16.5, ASME B16.47 and EN 1092-1 , along with applicable material and customer-specific specifications.
3. What materials are available for Weld Neck Flanges?
They can be supplied in Carbon Steel, Stainless Steel, Duplex, Super Duplex, Nickel Alloys and other special alloys . Common stainless grades include 304/304L, 316/316L, 321 and 347/347H.
4. What pressure classes are available?
Weld Neck Flanges are available in Class 150, 300, 600, 900, 1500 and 2500 , subject to the applicable standard, size and material requirements.
5. What facing options are available for Weld Neck Flanges?
Common facing options include Raised Face (RF), Flat Face (FF) and Ring Type Joint (RTJ) . The appropriate facing can be selected according to the piping system and application requirements. weldability and suitability for selected elevated-temperature applications .
6. Where are Weld Neck Flanges commonly used?
Weld Neck Flanges are widely used in oil and gas pipelines, refineries, petrochemical plants, chemical processing units, power plants, marine systems, pressure vessels, heat exchanger piping and industrial process plants .