Our Schedule Blind Flanges provide a robust and secure solution for terminating piping systems and sealing vessel openings. Manufactured from high-grade SS 304 and SS 316L, these Class 150# flanges are designed to withstand significant internal pressure. Available for both Schedule 10 and Schedule 40 systems, they offer a reliable, leak-proof seal that allows for easy future expansion or system maintenance.
| Technical Parameter | Specification Details |
|---|---|
| Material Grade | ASTM A182 F304, F304L, F316, F316L |
| Design Standard | ASME B16.5, MSS SP-44 |
| Pressure Class | Class 150# (Standard), 300#, 600# |
| Size Range | 1/2″ to 24″ (NPS) |
| Wall Schedules | Compatible with Schedule 10 and Schedule 40 |
| Face Type | Raised Face (RF) / Flat Face (FF) |
| Manufacturing | Forged and CNC Machined |
The Schedule Blind Flange is a solid disk used to block off a section of pipe or a nozzle on a vessel that is not in use. Unlike other flange types, a blind flange has no center hole, making it the primary component for pressure testing and system isolation in industrial piping networks.
Blind flanges are essential for safety and system integrity. They are commonly installed at the end of a pipe run to provide a permanent or temporary seal. In B2B industrial environments, they are frequently used during high-pressure testing to isolate sections of the pipeline, ensuring that every joint and weld meets the required safety standards before the system goes live.
One of the primary advantages of using a blind flange over a welded cap is accessibility. Because the flange is bolted, it can be easily removed by maintenance crews to allow for system cleaning, inspection, or the addition of new pipe runs. This modularity is vital for expanding industrial facilities where piping requirements may change over time.
Our blind flanges are manufactured to ASME B16.5 standards, ensuring perfect alignment with corresponding slip-on or weld-neck flanges. Forged from AISI 304 or 316L Stainless Steel, they offer exceptional resistance to corrosion and chemical attack. The SS 316L variant is particularly recommended for marine and chemical processing applications where resistance to pitting is mandatory.
Petrochemical Refineries: Sealing unused nozzles on pressure vessels and storage tanks.
Pipeline Testing: Used as a temporary seal during hydrostatic and pneumatic pressure tests.
Water Treatment: Termination of large-scale filtration lines for future expansion.
Chemical Processing: Secure isolation of high-pressure corrosive fluid lines in SS 316L.
Marine Engineering: Sealing ballast tank systems and offshore platform piping modules.
We are a leading stockist and trader of electro-mechanical materials, pipes, fittings, and valves, based in Riyadh. Our inventory includes a wide range of pipes and fittings in carbon steel, stainless steel, copper, cast iron, PVC, and ductile iron.
