Blind Flanges
Starting From 48Rs/Pcs
Technical Specifications of Blind Flanges In India
| Size Range | 1/2" to 48" (Available in Raised Face [RF], Flat Face [FF], and Ring Type Joint [RTJ] sealing face profiles) |
| Material Grades | Stainless Steel: ASTM A182 F304, F304L, F316, F316L, F321, F347 |
| Carbon Steel | ASTM A105, A350 LF2, A694 F42 to F70 |
| Alloy Steel | ASTM A182 F5, F9, F11, F22, F91 |
| High Nickel Alloy | Monel 400/K500, Inconel 600/625/718, Incoloy 800/800H/825, Hastelloy C22/C276, Nickel 200/201, Cupronickel (90/10 & 70/30) |
| Thickness / Pressure Class | Pressure Ratings: Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500 |
| Dimensional Standard | Conforms strictly to ASME B16.5, ASME B16.47 Series A & B |
| Surface Finish | CNC Serrated Finish (Spiral or Concentric Stock Finish), Smooth Finish, Black Anti-Rust Paint, Yellow Varnish, Hot-Dip Galvanized, Pickled & Passivated |
| Origin | Indian / Imported |
Sourcing Terms & Timeline
Payment Terms
Letter of Credit / Bank Transfer / Advance
Delivery Package
Mill Test Certificate (MTC) + Inspection Reports
Standard Delivery
2-5 Working Days in Maharashtra region
Custom Cuts Support
Custom length cutting & shearing facilities available
Verified Suppliers
No verified suppliers linked to this product yet.
Benefits and Application of Blind Flanges
Benefits
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Total Flow Isolation and Safety: Provides a definitive, mechanical shut-off that successfully contains extreme hydraulic pressures, preventing hazardous media leaks or fugitive gas emissions.
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Exceptional Pressure and Stress Absorption: The solid, thick-center architecture absorbs heavy pipeline bending stresses and continuous hydraulic pressure spikes better than almost any other flange configuration.
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Easy Maintenance Accessibility: Allows rapid mechanical removal of bolts to open the pipe end, giving service crews easy access to the pipeline interior for cleaning, inspection, or system expansion.
Applications
Blind flanges are widely utilized across industrial piping infrastructure to block off active pipeline networks during localized maintenance or system modifications. In cross-country oil and gas manifold grids, high-yield Carbon Steel blind flanges are bolted onto terminal ends to provide secure high-pressure sealing that safely contains volatile hydrocarbons. Chemical processing operations rely extensively on Stainless Steel and High Nickel Alloy blind flanges to cap unused reactor ports and acid line headers, delivering vital protection against extreme localized pitting and chemical decay. Within modern thermal power generation facilities, heavy-duty Alloy Steel blind flanges are integrated into high-pressure steam bypass headers to seal lines reliably under deep thermal fatigue loops. Additionally, marine engineering platforms employ erosion-proof Cupronickel and Stainless Steel blind flanges on seawater cooling loops and bilge mains to withstand continuous wave vibration and rapid chloride-accelerated corrosion.
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