Ratnakar Steel India is a specialized manufacturer of premium **Stainless Steel Instrument Fittings**, engineered for high-precision applications in analytical and process instrumentation. Our fittings ensure leak-tight performance and high resistance to vibration and pressure surges in critical control environments.

Precision & Reliability Analysis

We provide a comprehensive range of compression and flared fittings, designed to provide a secure grip on tubing while maintaining structural integrity under extreme thermal and mechanical stress.

  • Size Range: 1/16" to 2" (Fractional) | 3mm to 50mm (Metric)
  • Types: Double Ferrule, Single Ferrule, Male/Female Connectors, Union Elbows, Tees
  • Material Grades: SS 316, 316L, 304, 304L, Monel, Hastelloy, Titanium
  • Pressure Class: Up to 10,000 PSI (Grade and Size dependent)

Stainless Steel Instrument Fitting Technical Data

Size & Configuration
FRACTIONAL: 1/16" to 2" METRIC: 3mm to 50mm TYPE: Double Ferrule, Single Ferrule THREADS: NPT, BSPT, BSPP, UNF, Metric
High-Precision Grades
AUSTENITIC: 316, 316L, 316Ti, 304, 304L, 321 SUPER ALLOYS: Monel 400, Hastelloy C276, Inconel 625 SPECIAL: Duplex 2205, Titanium Grade 2
Technical Ratings
PRESSURE: Up to 10,000 PSI (Gas-Tight) TEMP RANGE: -325°F to 1200°F (-198°C to 648°C) VIBRATION: High Resistance Fatigue Life
Surface & Sealing Finish
FINISH: Electropolished, Silver Plated Nut threads SEAL: Metal-to-Metal burnished surface finish CONDITION: Solution Annealed, Precision Machined
Key Applications
Analytical & Lab Instrumentation CNG/LNG Piping Systems Chromatography & Sampling Panels Control & Hydraulic Lines
Testing & Compliance
STANDARDS: ASTM A276, A479, ASME SA479 TESTING: Helium Leak Test, Hydrostatic, Burst Test CERTIFICATION: EN 10204 3.1, NACE MR0175/ISO 15156

Our Production Excellence

Our manufacturing process involves high-precision CNC machining and burnishing of internal surfaces to ensure a gas-tight seal and effortless assembly for your instrumentation technicians.

01. Grade Selection

Utilizing high-molybdenum SS 316/316L for superior resistance to chloride stress corrosion cracking.

02. Precision Machining

Advanced CNC turning to achieve micro-inch surface finishes and tight tolerances for ferrule engagement.

03. Performance Testing

Rigorous helium leak testing and burst pressure verification to ensure zero-leakage in the field.