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Blind Flanges
Blind Flanges are solid pipe flanges designed to close and seal the ends of piping systems, valves, and pressure vessel openings. Manufactured from premium quality materials, they provide excellent strength, pressure resistance, corrosion protection, and leak-proof sealing performance for oil & gas, petrochemical, power plants, chemical processing, marine, and industrial applications.
Overview
Blind Flanges are essential piping components used to terminate or isolate pipeline sections by securely closing pipe ends, valves, and equipment openings. Unlike other flanges, Blind Flanges do not have a center bore, making them ideal for complete pipeline closure.
These flanges are designed to withstand high-pressure and high-temperature conditions while allowing easy access for inspection, cleaning, modification, or future pipeline expansion. Their strong construction ensures safe and reliable operation in demanding environments.
Veltronova Industries supplies premium quality Blind Flanges manufactured using advanced technology and superior-grade materials. Available in various sizes, pressure classes, face types, materials, and international standards, our Blind Flanges are widely used in refineries, oil & gas plants, petrochemical industries, chemical processing units, power generation plants, marine, and heavy engineering applications.
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Technical Specifications
| Material | Grades Available | Standards | Size Range | Pressure Class | Types | Face Finish |
|---|---|---|---|---|---|---|
| Carbon Steel Blind Flanges | ASTM A105, A350 LF2 | ASME B16.5, ASME B16.47, ANSI | ½” – 60” | Class 150 – Class 2500 | Raised Face Blind, Flat Face Blind, RTJ Blind | RF, FF, RTJ |
| Stainless Steel Blind Flanges | SS 304/304L, 316/316L, 321, 347, 904L | ASTM A182, ASME B16.5 | ½” – 60” | Class 150 – Class 2500 | Blind Plate Flange, Industrial Blind Flange | Polished, Raised Face |
| Alloy Steel Blind Flanges | ASTM A182 F5, F9, F11, F22, F91 | ASTM A182, ANSI B16.5 | ½” – 48” | Class 150 – Class 2500 | High Pressure Blind Flange | RF, RTJ Finish |
| Duplex / Super Duplex Blind Flanges | UNS S31803, S32205, S32750, S32760 | ASTM A182 | ½” – 48” | Class 150 – Class 2500 | Pipeline Blind Flange | Pickled & Passivated |
| Inconel Blind Flanges | Inconel 600, 601, 625, 718 | ASTM B564 | ½” – 24” | Class 150 – Class 2500 | Blind Pipe Flanges | Polished Finish |
| Hastelloy Blind Flanges | Hastelloy C22, C276 | ASTM B564 | ½” – 24” | Class 150 – Class 2500 | Industrial Blind Flanges | Polished, Pickled |
| Monel Blind Flanges | Monel 400, K500 | ASTM B564 | ½” – 24” | Class 150 – Class 1500 | Blind End Flange | Machined Finish |
| Titanium Blind Flanges | Titanium Gr.1, Gr.2, Gr.5 | ASTM B381 | ½” – 24” | Class 150 – Class 1500 | Blind Closure Flange | Pickled, Polished |
Features & Advantages of Blind Flanges
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Improves stress distribution for enhanced structural integrity.
Applications Across Industries
Oil & Gas
Used in upstream, midstream and downstream pipeline systems.
Petrochemical
Used in upstream, midstream and downstream pipeline systems.
Power Generation
Used in upstream, midstream and downstream pipeline systems.
Chemical Processing
Used in upstream, midstream and downstream pipeline systems.
Marine & Offshore
Used in upstream, midstream and downstream pipeline systems.
Water Treatment
Used in upstream, midstream and downstream pipeline systems.
Frequently Asked Questions
Technical questions on our Blind Flanges, answered by our engineering team.
Blind Flanges are used to close pipe ends, valves, and pressure vessel openings, providing secure sealing and allowing future access for maintenance or expansion.
Yes, Blind Flanges are available in pressure classes up to Class 2500, making them suitable for high-pressure and high-temperature conditions.
They are available in Stainless Steel, Carbon Steel, Alloy Steel, Duplex & Super Duplex, Nickel Alloys, Copper-Nickel, Inconel, Hastelloy, Monel, and Titanium.
Blind Flanges are manufactured according to ASME B16.5, ASME B16.47, ASTM, ANSI, DIN, EN, and other international standards.
Blind Flanges provide excellent sealing, easy installation, high-pressure resistance, corrosion protection, pipeline isolation, and long-lasting performance in industrial systems.
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