Ratnakar Steel India is a premier manufacturer of high-quality **Stainless Steel Flanges**, providing critical connection points for high-pressure piping systems. Our flanges are engineered for maximum structural integrity, ensuring leak-proof sealing in petrochemical, oil, gas, and water treatment industries.
Engineering & Pressure Analysis
We produce a comprehensive range of flanges, from standard industrial sizes to custom-engineered dimensions, all featuring precision-machined faces for perfect gasket engagement.
- Flange Types: Weld Neck (WNRF), Slip-On (SORF), Blind (BLRF), Socket Weld (SWRF), Lap Joint, and Threaded
- Pressure Ratings: Class 150, 300, 600, 900, 1500, and 2500 LBS | PN6 to PN64
- Face Types: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), and Male/Female
- Material Grades: F304, F304L, F316, F316L, F321, F347, Duplex F51/F53
Stainless Steel Flanges Technical Data
Size & Pressure Class
Forged Material Grades
Flange Types & Sealing Faces
Technical Ratings
Key Applications
Testing & Compliance
Our Production Standard
Our manufacturing workflow utilizes closed-die forging and precision CNC turning to ensure superior grain flow and dimensional accuracy, meeting the most rigorous international safety and quality codes.
01. Grade Selection
Selecting forged-quality billets in grades like F316L to ensure maximum corrosion resistance and weldability.
02. Precision Forging
Utilizing hot forging and CNC machining to achieve exact flange thickness and bolt hole alignment.
03. Quality Testing
100% inspection for surface finish (AARH) and ultrasonic testing to ensure zero internal forging defects.