SS Blind Flanges (BLRF)
Raj Metals is a trusted manufacturer of Stainless Steel Blind Flanges (BLRF), engineered to provide a secure seal for the ends of piping systems, valves, and pressure vessel openings. Unlike standard flanges, our blind flanges feature a solid, boreless construction designed to withstand significant internal pressure and rigorous bolt loading. These flanges are indispensable for isolating pipeline sections during maintenance, repairs, or for facilitating future system expansions. Precision-forged from high-grade stainless steel—such as 304L and 316L—our blind flanges ensure a 100% leak-proof seal and superior structural integrity, delivering long-term reliability even in the most demanding high-pressure industrial environments.
Key Features of Our SS Blind Flanges
✓ Secure Pipeline Termination & Reliable System Sealing
✓ Engineered for Maximum Internal Pressure Containment
✓ Optimized Access for System Inspection, Maintenance & Cleaning
✓ Precision-Machined Gasket Surfaces for Leak-Proof Performance
Product Specifications
| Parameter | Details |
|---|---|
| Product Form | SS Blind Raised Face (BLRF) / Flat Face (BLFF) / RTJ |
| Size Range | 1/2" NB to 64" NB |
| Pressure Class | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Face Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Manufacturing Type | Precision Forged |
| Surface Finish | Pickled, Bright Polished, or Standard Mill Finish |
| Standard Compliance | ANSI/ASME B16.5, B16.47, DIN, EN 1092-1 |
| Testing | PMI, Ultrasonic (UT), Magnetic Particle (MPI), Hydrostatic |
| Certification | MTC EN 10204 3.1, NACE MR0175 / MR0103 Compliance |
SS Blind Flanges (BLRF) Size Chart
| Nominal Size | Pressure Class | Facing | Recommended Use |
|---|---|---|---|
| 1/2" - 2" | 150# - 600# | RF / FF / RTJ | Small-bore pipeline termination |
| 2-1/2" - 8" | 150# - 900# | RF / FF / RTJ | Process isolation & maintenance |
| 10" - 24" | 150# - 600# | RF / RTJ | Plant & refinery vessel openings |
| Above 24" | Class 150# / 300# | Custom | Large-scale industrial infrastructure |
| Custom Requirement | Custom sizes, special SS grades, and drawing-based fabrication available. | ||
