In oil & gas, petrochemical and industrial pipeline systems, unreliable flange connections can cause leakage risks, maintenance downtime and unexpected project delays. This type of flange is designed to safely close pipeline ends, pressure vessels and equipment nozzles while maintaining system integrity during operation, testing and maintenance.
We manufacture high-quality forged blind flanges according to ASME B16.5, API and international standards. Our products are produced from premium carbon steel, stainless steel and alloy materials with strict dimensional inspection and material traceability. Available in Class 150 to Class 2500 pressure ratings, they provide excellent sealing performance, corrosion resistance and long service life for demanding industrial applications.
With stable quality and strict manufacturing standards, Senrui supplies faucets to distributors, wholesalers, and OEM customers worldwide.
Key Features of Blind Flange
1.High Pressure Resistance
Designed for demanding pipeline systems,
Blind Flanges can withstand high-pressure applications from Class 150 to Class 2500LB, ensuring reliable performance in oil & gas, petrochemical and industrial projects.
2. Excellent Sealing Performance
Manufactured with precision-machined sealing surfaces including
RF (Raised Face), FF (Flat Face) and RTJ (Ring Type Joint) to provide secure and leak-resistant connections.
3. Forged High Strength Construction
Produced through advanced forging processes, blind flanges feature improved mechanical strength, better grain structure and enhanced durability compared with standard cast products.
4. Wide Material Selection
- ASTM A105 Carbon Steel
- ASTM A350 LF2 Low Temperature Steel
- ASTM A182 F304/F316 Stainless Steel
- Alloy Steel Materials
Suitable for different temperature, pressure and corrosion environments.
5.Precision Machining & Dimensional Accuracy
- Bolt hole positioning
- Flange thickness
- Outside diameter
- Facing finish
Providing easy installation and reliable connection performance.
Applications
1. Oil & Gas Pipeline Systems
- Crude oil pipelines
- Natural gas transmission systems
- Refinery piping networks
- Offshore platform piping
Key benefits:
- High-pressure performance
- Leak prevention
- Safe pipeline maintenance
2. Petrochemical & Chemical Processing Plants
- Reactors
- Heat exchangers
- Storage tanks
- Process pipelines
- Chemical transfer systems
3. Power Generation Industry
- Steam pipelines
- Cooling water systems
- Boiler connections
- High-pressure piping systems
4. LNG & Cryogenic Applications
- LNG storage facilities
- Gas processing plants
- Cryogenic equipment connections
5. Marine & Shipbuilding Industry
- Ship piping systems
- Offshore platforms
- Ballast water systems
- Marine equipment connections
6. Water Treatment & Industrial Pipeline Projects
- Water supply pipelines
- Wastewater treatment plants
- Pump stations
- Industrial utility systems
Why Choose Our Blind Flange?
A blind flange plays a key role in pipeline isolation and pressure control. Compared with temporary sealing methods, forged blind flanges provide stronger mechanical strength and safer long-term performance.
✔ High-pressure resistance up to Class 2500LB
✔ Precision bolt hole machining
✔ Smooth sealing surface finish
✔ Customized sizes and materials available
✔ Corrosion and weather resistance
✔ Long service life
✔ Strict quality inspection
