- sales@sanghviint.com
- Kumbharwada, Mumbai - 400 004
Blind Flange
Product Details
Blind Flanges
We manufacture a wide range of high-strength, corrosion-resistant flanges in materials such as Stainless Steel, Carbon Steel, and various alloys to ensure leak-proof performance even in high-pressure environments.
Description
Blind Flanges are solid, bore-less discs designed to seal the end of pipes, valves, or pressure vessel openings. This design makes them essential for stopping flow or isolating a system for inspection, maintenance, and pressure testing. Capable of withstanding high pressure and temperature conditions, they are manufactured from a wide range of materials, including Stainless Steel, Carbon Steel, Alloy Steel, Duplex, Super Duplex, and Nickel Alloys, ensuring superior durability and corrosion resistance. Our flanges can be supplied with raised face (RF), flat face (FF), or ring-type joint (RTJ) surfaces and comply with all major international standards like ASME, ANSI, DIN, EN, BS, and JIS. Their high mechanical strength and ease of installation provide reliable, leak-proof sealing for critical piping systems in industries such as oil & gas, petrochemical, and power generation.
Specifications of Blind (Flange)
| Specification | Details |
|---|---|
| Product | Blind Flange |
| Size Range | 1/2" NB to 72" NB (DN15 to DN1800) – Custom sizes available |
| Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500 / PN6 to PN400 |
| Face Types | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Standards | ASME B16.5, ASME B16.47 Series A & B, ASTM, ANSI, DIN, EN 1092-1, BS 4504, JIS B2220, ISO |
| Material Grades |
Stainless Steel: 304, 304L, 316, 316L, 321, 347 Carbon Steel: ASTM A105, ASTM A350 LF2 Alloy Steel: ASTM A182 F1, F5, F9, F11, F22, F91 Duplex / Super Duplex: UNS S31803, S32205, S32750, S32760 Nickel Alloys: Inconel, Monel, Hastelloy, Alloy 20 Other Alloys: Copper Nickel, Aluminium, Titanium |
| Manufacturing Process | Forged, Heat Treated, CNC Machined |
| Surface Finish | Black Coated, Anti-Rust Oil, Galvanized, Pickled, Polished |
| Testing & Certification | Hydrostatic Test, Ultrasonic Test (UT), Magnetic Particle Test (MPI), PMI Test, IBR / Third-Party Inspection |
| Applications | Oil & Gas, Petrochemical, Power Generation, Water Supply, Chemical Processing, Shipbuilding, Marine, Construction, Pipeline Testing & Maintenance |
| Special Features | Leak-Proof Sealing, High Pressure & Temperature Resistance, Easy Installation & Removal, Reusable for Testing & Maintenance |
Key Features
01 End Closure
Blind Flanges are primarily used to seal the ends of pipelines, valves, or equipment, providing a secure block-off point for safety and efficiency.
02 Inspection & Maintenance
They allow easy access for inspection, cleaning, and modification of piping systems without requiring complete dismantling.
03 Strength & Durability
Manufactured using carbon steel, stainless steel, duplex, and alloy grades, these flanges deliver excellent mechanical strength and corrosion resistance.
04 Standard Compliance
Our Blind Flanges are manufactured to meet global standards such as ASME B16.5, ASME B16.47, DIN, EN, and JIS, ensuring compatibility and reliability.
05 Wide Applications
Extensively used in oil & gas, petrochemical, power generation, shipbuilding, and water treatment industries for safe piping system isolation.
06 Leak-Proof & Pressure Resistant
Blind Flanges provide a tight, leak-proof seal in high-pressure and high-temperature systems, ensuring safety and efficiency in operations.
Catalogue