Blind Flanges

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MOQ : 10 Units

Blind Flanges Specification

Application
Oil & Gas, Petrochemical, Waterworks, Power Plants

Grade
ASTM A105 / A350 LF2 / A182 F304, F316, F11, F22, etc.

Dimension (L*W*H)
Customized as per Requirements

Feature
Corrosion Resistance, Durable

Purity
Industrial Grade

Product Type
Blind Flange

Material
Carbon Steel, Stainless Steel, Alloy Steel

Standard
ANSI B16.5 / ASME B16.47 / DIN / JIS / EN / BS

Shape
Round

Surface
Rust Resistant Coated

Connection
Flanged

Technics
Forged

Pressure
Class 150 / 300 / 600 / 900 / 1500 / 2500

Size
1/2 to 60 (DN15-DN1500)

Color
Metallic Silver / Black

Testing
100% Radiography, Hydro Test, Visual & Dimensional Inspection

Hardness
Depends on Material Grade

Face Type
Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

Weight
Varies by Size & Material

Temperature Range
Up to 600C (Depending on Material)

Finish
Smooth / Serrated / Stock Finish

Manufacturing Method
Closed Die Forged

End Type
Blind (No Opening)

Coating
Anti-rust Oil, Black Paint, Galvanized as required

Bolt Hole Diameter
As per Standard or Custom

Blind Flanges Trade Information

Minimum Order Quantity
10 Units

Supply Ability
1000 Units Per Month

Delivery Time
7 Days

Main Domestic Market
All India

Blind Flanges About

Specifications of Blind Flanges:

Available in stainless steel, carbon steel, and alloy materials.
Offered with raised face, RTJ face, or flat face designs.
Available in multiple sizes and pressure ratings to meet your specific requirements.

Engineered for Durability and Safety

Blind flanges are manufactured through closed die forging, ensuring high structural integrity and performance. They undergo thorough testing, including 100% radiography, hydro, visual, and dimensional inspections. Available coatings such as anti-rust oil, black paint, or galvanizing provide an added layer of corrosion resistance, making them suitable for demanding environments.

Customized to Meet Industry Needs

Available in a variety of standards (ANSI, ASME, DIN, JIS, EN, BS) and materials (carbon steel, stainless steel, alloy steel), our blind flanges can be customized in size, coating, and finish. This flexibility ensures compatibility with different piping systems and project requirements across oil & gas, petrochemical, and power plant industries.

FAQ's of Blind Flanges:

Q: How are blind flanges typically used in industrial applications?

A: Blind flanges are used to close off ends of piping systems, pressure vessel openings, or valves, allowing for section isolation during maintenance, pressure testing, or system expansion. Their ability to withstand high pressure and temperature makes them essential in oil & gas, petrochemical, waterworks, and power plant projects.

Q: What materials and grades are available for blind flanges?

A: Blind flanges are manufactured from materials such as carbon steel, stainless steel, and alloy steel. Common grades include ASTM A105, A350 LF2, A182 F304, F316, F11, and F22, among others. Material selection depends on application requirements like temperature, pressure, and corrosion resistance.

Q: When should I choose a specific face type such as Raised Face (RF), Flat Face (FF), or Ring Type Joint (RTJ)?

A: The choice of face type depends on the service conditions and flange compatibility. Raised Face (RF) is common for general industrial applications, Flat Face (FF) is preferred where gasket seating must be uniform, and Ring Type Joint (RTJ) is selected for high-pressure, high-temperature environments requiring a leak-proof seal.

Q: Where can these blind flanges be installed?

A: Our blind flanges can be installed on pipeline ends, pressure vessel nozzles, and valve outlets in locations requiring secure sealing. They conform to various international standards, ensuring global applicability in industries such as oil & gas, petrochemical, and waterworks.

Q: What manufacturing and testing processes are used for these blind flanges?

A: The manufacturing process involves closed die forging, resulting in high strength flanges with precise dimensions. Each flange is subjected to rigorous testing: 100% radiography, hydrostatic pressure testing, and both visual and dimensional inspections, ensuring reliability and safety in service.

Q: How does coating enhance the performance of blind flanges?

A: Coatings like anti-rust oil, black paint, or galvanizing are applied to protect the flange surface from corrosion. This prolongs service life, especially in harsh or corrosive environments, and maintains the reliability of the flange where safety and longevity are paramount.

Q: What are the benefits of choosing a customized blind flange?

A: Custom blind flanges allow for precise matching to system dimensions, material, and pressure requirements. This reduces the risk of leakage or failure, enhances operational safety, and ensures seamless integration with existing infrastructure, supporting efficient and cost-effective maintenance or expansion.

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