Blind Flanges
| Specification | Details |
|---|---|
| Product Name | Blind 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 | Bolted Flanged Connection |
| Flange Type | Blind Flange for Closing Pipe Ends, Nozzles and Equipment Openings |
| Facing Type | Raised Face / Flat Face / Ring Type Joint, as applicable |
| Bore Type | Solid Blind Design / Customized Configuration |
| 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 | Not normally welded; connection is made through bolting and suitable gasket |
| Fabrication | Suitable for machining and finishing according to applicable material procedures |
| Dimensional Accuracy | Precision dimensions according to applicable flange standards |
| Customization | Size, Material Grade, Pressure Class, Facing, 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 Blind 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, Pressure Vessels, Heat Exchangers and Industrial Process Piping |
1. Most Common Types of Blind Flanges
| Type | Details |
|---|---|
| Standard Blind Flanges | Used to close pipe ends, nozzles and equipment openings in industrial piping systems. |
| Raised Face Blind Flanges | Features a raised sealing surface and is commonly used with suitable gaskets for reliable bolted connections. |
| Flat Face Blind Flanges | Provides a flat sealing surface for applications requiring a flat-face configuration. |
| Ring Type Joint Blind Flanges | Features an RTJ groove for suitable high-integrity gasketed connections in demanding pressure applications. |
| Stainless Steel Blind Flanges | Suitable for piping systems requiring corrosion resistance and reliable mechanical performance. |
| Carbon Steel Blind Flanges | Commonly used in oil & gas, petrochemical, water treatment and general industrial applications. |
| Alloy Steel Blind Flanges | Suitable for applications requiring enhanced strength and performance under elevated-temperature conditions. |
| Duplex Blind Flanges | Provides high mechanical strength with strong resistance to chloride corrosion, pitting and stress-corrosion cracking. |
| Super Duplex Blind Flanges | Designed for highly corrosive environments requiring excellent resistance to pitting, crevice and chloride corrosion. |
| Nickel Alloy Blind Flanges | Used in demanding chemical and corrosive services requiring specialized nickel alloy performance. |
| Titanium Blind Flanges | Suitable for applications requiring lightweight construction and excellent corrosion resistance. |
| Customized Blind Flanges | Manufactured according to customer drawings, material grade, size, pressure class, facing, thickness, drilling pattern and testing requirements. |
2. Blind Flanges – Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Blind 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 | Bolted Flanged Connection |
| Flange Design | Solid Disc Design for Closing Pipe Ends, Nozzles and Equipment Openings |
| Facing Type | Raised Face / Flat Face / Ring Type Joint, as applicable |
| Bore Type | Solid Blind Design / Customized Configuration |
| 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 | Not normally welded; connection is made through bolting and suitable gasket |
| Fabrication | Suitable for machining and finishing according to applicable material procedures |
| Dimensional Accuracy | Precision dimensions according to applicable flange standards |
| Customization | Size, Material Grade, Pressure Class, Facing, Thickness, 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 Blind 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, Pressure Vessels, Heat Exchangers and Industrial Process Piping |
3. Blind Flanges – Supply & Quality Details
| Parameter | Details |
|---|---|
| Material Identification | As per Selected Material Grade and Applicable Specification |
| Flange Configuration | Standard Blind / Customized Blind Flanges |
| 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 |
| Thickness | As per Applicable Standard and Pressure Class |
| 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, Thickness, 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 Blind Flanges Supply |
| Applications | Oil & Gas, Petrochemical, Chemical Processing, Power Generation, Marine, Water Treatment, Pressure Vessels, Heat Exchangers and Industrial Process Piping |
Most Common Types Of Blind Flanges
| Type | Details |
|---|---|
| Standard Blind Flanges | Used to close pipe ends, nozzles, vessels and equipment openings in industrial piping systems. |
| Raised Face Blind Flanges | Features a raised sealing surface for use with suitable gaskets in standard piping and equipment connections. |
| Flat Face Blind Flanges | Provides a flat sealing surface for applications requiring a flat-face configuration. |
| Ring Type Joint Blind Flanges | Features an RTJ groove for suitable high-integrity gasketed connections in demanding pressure applications. |
| Stainless Steel Blind Flanges | Manufactured from stainless steel for applications requiring corrosion resistance and reliable mechanical performance. |
| Carbon Steel Blind Flanges | Commonly used in oil & gas, petrochemical, water treatment and general industrial piping applications. |
| Alloy Steel Blind Flanges | Suitable for applications requiring enhanced mechanical strength and elevated-temperature performance. |
| Duplex Blind Flanges | Provides high strength along with strong resistance to chloride corrosion, pitting and stress-corrosion cracking. |
| Super Duplex Blind Flanges | Suitable for highly corrosive environments requiring enhanced resistance to pitting, crevice and chloride corrosion. |
| Nickel Alloy Blind Flanges | Used in demanding chemical and corrosive services where specialized nickel alloy performance is required. |
| Titanium Blind Flanges | Suitable for applications requiring lightweight construction and excellent corrosion resistance. |
| Spectacle Blind Flanges | Used for positive isolation of piping systems by providing a solid blind section and an open spacer section in one assembly. |
| Customized Blind Flanges | Manufactured according to customer drawings, material grade, size, pressure class, facing, thickness, drilling pattern and testing requirements. |
Why Should You Buy Blind Flanges from Metalx Nickel & Alloys?
- Experienced Blind 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 corrosion-resistant, high-performance and specialty alloy flanges to customers across the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Africa, Europe, Asia and other global markets.
- Specialized Blind Flanges Exporter offering Blind Flanges in carbon steel, stainless steel, alloy steel, nickel alloys, titanium, duplex, super duplex and other suitable materials according to applicable international standards and customer requirements.
- Global Blind 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 Blind Flanges Supplier providing solid flanges for closing pipe ends, nozzles, pressure vessels and equipment openings, with suitable material grades and pressure ratings for demanding industrial piping systems.
- Wide Specialty Flanges Range including Blind Flanges, Stainless Steel Blind Flanges, Carbon Steel Blind Flanges, Alloy Steel Blind Flanges, Duplex Blind Flanges, Super Duplex Blind Flanges, Nickel Alloy Blind Flanges, Titanium Blind Flanges, Weld Neck Flanges, Slip-On Flanges, Socket Weld Flanges, Threaded Flanges, Lap Joint Flanges and Orifice Flanges.
| Key Feature | Details |
|---|---|
| Reliable Pipeline Closure | Provides a practical method for closing pipe ends, nozzles and equipment connections. |
| Positive Isolation | Suitable for permanent or temporary isolation of piping sections when correctly selected and installed. |
| Strong Construction | Forged and machined construction provides dependable structural performance for suitable industrial applications. |
| Multiple Material Options | Available in stainless steel, carbon steel, alloy steel, duplex, super duplex, nickel alloys and other specialty materials. |
| Multiple Pressure Classes | Available in Class 150, 300, 600, 900, 1500 and 2500 according to applicable requirements. |
| Multiple Facing Options | Available with Raised Face (RF), Flat Face (FF) and Ring Type Joint (RTJ) configurations. |
| Corrosion Resistance | Specialty alloy grades can be selected for corrosive service environments according to application requirements. |
| High-Temperature Suitability | Appropriate material grades can be selected for elevated-temperature applications within recommended service limits. |
| Easy Maintenance Access | Allows piping systems to be opened later for inspection, cleaning, maintenance or modification. |
| Dimensional Accuracy | Machined flange surfaces, thickness and bolt-hole configurations can be produced according to applicable standards. |
| Custom Manufacturing | Size, material, pressure class, facing, dimensions, finish and testing requirements can be customized. |
| International Standards | Manufactured according to ASME, EN, DIN, ASTM and other applicable international specifications. |
| Inspection & Documentation | Material Test Certificates and inspection documentation can be supplied according to project requirements. |
| Export Ready | Suitable packaging and product identification can be provided for domestic and international shipment. |
| Wide Applications | Used in oil & gas, petrochemical, chemical, power, refinery, pressure vessel and general process industries. |
| Specification | Details |
|---|---|
| Product Name | Blind Flanges |
| Material Grade | Stainless Steel / Carbon Steel / Alloy Steel / Duplex / Super Duplex / Nickel Alloys / Inconel / Incoloy / Monel / Hastelloy and More |
| Material Type | Forged Metallic Flange |
| Flange Standard | ASME B16.5 / ASME B16.47 / EN 1092-1 / DIN and Other Applicable Standards |
| Material Standards | ASTM / ASME / EN / DIN / JIS and Other Applicable Specifications |
| Common Stainless Steel Grades | ASTM A182 F304/F304L / F316/F316L and Other Applicable Grades |
| Nickel Alloy Options | Inconel / Incoloy / Monel / Hastelloy and Selected Nickel Alloy Grades |
| Manufacturing Type | Forged / Hot Forged / Precision Machined |
| Size Range | NPS 1/2 to NPS 24 under ASME B16.5, with Larger Sizes as per Suitable Standards |
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500 |
| Connection Type | Bolted Flanged Connection |
| Flange Design | Solid Disc Design for Closing Pipe Ends and Equipment Openings |
| Facing Type | Raised Face (RF) / Flat Face (FF) / Ring Type Joint (RTJ) |
| Bore Type | Solid Blind Design / Customized Configuration |
| Surface Finish | Machined / Smooth / As Required by Specification |
| Dimensions | As per Applicable Standard and Customer Requirement |
| 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 | As per Standard / Project Specification / Customer Requirement |
| Marking | Size / Grade / Standard / Pressure Class / Facing / Heat Number as Applicable |
| Customization | Size / Material Grade / Pressure Class / Facing / Thickness / Dimensions / Finish / Testing |
| Packaging | Export-Ready Packaging Suitable for Transportation and Handling |
| Export Supply | Worldwide Blind Flanges Export Supply |
| Applications | Piping Systems / Pressure Vessels / Refineries / Chemical Plants / Power Plants / Oil & Gas Facilities / Industrial Equipment |
1. What are Blind Flanges?
Blind Flanges are solid flanges used to close pipe ends, nozzles, pressure vessels and equipment openings . They provide a bolted connection and can be removed when inspection, maintenance or modification is required.
2. What standards are used for Blind Flanges?
Blind Flanges are commonly manufactured according to ASME B16.5, ASME B16.47, EN 1092-1, DIN and other applicable international standards, depending on the project requirements.
3. What materials are available for Blind Flanges?
Blind Flanges can be supplied in Stainless Steel, Carbon Steel, Alloy Steel, Duplex, Super Duplex, Nickel Alloys, Inconel, Incoloy, Monel, Hastelloy and other suitable materials.
4. What pressure classes are available for Blind Flanges?
Common pressure classes include Class 150, 300, 600, 900, 1500 and 2500 . The appropriate class depends on flange size, material, temperature, pressure and applicable design standard.
5. What facing options are available for Blind Flanges?
Common facing options include Raised Face (RF), Flat Face (FF) and Ring Type Joint (RTJ) . The required facing can be selected according to the piping system, gasket and applicable standard.
6. Where are Blind Flanges commonly used?
Blind Flanges are widely used in oil gas facilities, refineries, petrochemical plants, chemical processing units, power plants, pressure vessels, water treatment systems, marine installations and industrial process piping .