Our Alloy Steel Tube Fittings are engineered for mission-critical instrumentation and sampling systems where the failure of a single connection is not an option.
Utilizing a sophisticated Double Ferrule mechanical grip, these fittings provide a torque-free, leak-proof seal that remains secure even under intense vibration and thermal cycling. Unlike standard pipe fittings, our alloy tube connectors are precision-machined from forged blanks to ensure chemical and thermal compatibility with high-grade Chrome-Moly tubing. This makes them indispensable for hydraulic control lines, chemical injection skids, and turbine monitoring systems in high-heat environments.
We supply a comprehensive range of F11, F22, and F91 Tube Fittings, including Male/Female Connectors, Union Tees, Crosses, and Nut-Ferrule sets. Designed for easy installation without specialized tools, our fittings provide a gas-tight seal and are fully compatible with fractional and metric tubing. Every batch undergoes rigorous pressure testing and PMI verification to guarantee reliability in the most demanding petrochemical and power generation infrastructures.
| Specification | Technical Details |
|---|---|
| Material Standards | ASTM A182 / ASME SA182 (Forged Alloy Steel) |
| Available Grades | F5, F9, F11, F12, F22, F91 (Chrome-Moly Grades) |
| Pressure Ratings | Up to 6,000 PSI (Standard) | High Pressure up to 15,000 PSI |
| Fitting Types | Male/Female Connectors, Union Elbows, Union Tees, Crosses, Bulkhead Unions, Ferrule Sets, Nut & Front/Back Ferrule |
| Size Range | Fractional: 1/16" to 2" | Metric: 2mm to 50mm |
| Thread Standards | NPT, BSPT (Tapered), BSPP (Parallel), SAE/MS Straight Threads, Metric Threads |
| Design Technology | Double Ferrule Swagelok-Type (Mechanical Grip), Single Ferrule, Compression Type |
| Testing & Inspection | Pneumatic Leak Test (Nitrogen), Hydrostatic Test, PMI (Positive Material Identification), Vibration Fatigue Testing |
| Temperature Range | -20°F to 1200°F (-29°C to 648°C) depending on Grade |
| Value Added Services | Oxygen Cleaning (Oil-Free), Silver Plating of Nuts (Anti-Galling), Custom Manifold Fabrication |
| Standard / Classification | Available Material Grades & Engineering Attributes |
|---|---|
| ASTM A182 (Forged Alloy) | F1, F5, F9, F11 (Class 1/2), F22, F91 (High-Temperature Forgings) |
| Design Standards | ASME B31.3 (Process Piping), ASME B31.1 (Power Piping) Compliance |
| Pressure Ratings | Standard: 3000 PSI to 6000 PSI | Ultra-High: Up to 15,000 PSI |
| Thread Configuration | NPT (ANSI/ASME B1.20.1), BSPT, BSPP, SAE/MS Straight Thread |
| Sealing Technology | Double Ferrule Swage-Type, Single Ferrule, Bite-Type, Flare (JIC 37°) |
| Instrumentation Standards | ASTM A213 / A269 (Tube Compatibility), MSS-SP-99 (Instrument Valves) |
| Hardness Requirements | Fully Annealed Ferrules (Max 190 HV) to ensure proper tube "bite" |
| NACE Compliance | NACE MR0175 / ISO 15156 (For H2S/Sour Service Instrumentation) |
| Cleanliness Standards | ASTM G93 Level C (Oxygen Service Cleanliness), Oil-Free Passivation |
Essential for connecting alloy tubing to female threaded ports in valves or manifolds. Features a precision-cut thread for leak-proof engagement.
A three-way connection that merges or splits fluid flow. The double ferrule design ensures all three ports remain gas-tight under vibration.
Designed to pass tubing through panels or enclosures. Provides a rigid, leak-proof mounting point for instrumentation control boxes.
Facilitates precise 90-degree directional changes in tight spaces. Forged body construction provides superior strength at the bend radius.
Four-way distribution fitting used in complex hydraulic networks and sampling manifolds to minimize connection points and leak paths.
The critical sealing components including the Front and Back ferrules. Precisely hardened to "bite" into the tube without damaging it.
Dhanavir Steel is a premier stockholder and global supplier of high-performance Stainless Steel, Special Alloys and Nickel Alloys.
© Copyright by Dhanavir Steel | Designed by Mesotek
Dhanavir Steel provides end-to-end industrial steel solutions, specializing in Pipes, Fittings, and Flanges. We combine technical expertise in NACE and IBR testing with a robust global supply chain to deliver quality-assured materials for demanding environments.
Dhanavir Steel provides end-to-end industrial steel solutions, specializing in Pipes, Fittings, and Flanges. We combine technical expertise in NACE and IBR testing with a robust global supply chain to deliver quality-assured materials for demanding environments.