Stainless Steel Precision Tubes for Instrumentation, Control Lines & High-Purity Fluid Systems
Inox Steel India
Inox Steel India is a leading manufacturer, stockist, and exporter of Instrumentation Tubes conforming to ASTM A269 and ASTM A632.
These tubes are designed for high-purity, high-precision, and corrosion-critical environments, ensuring reliable performance in control systems, measurement lines, chemical dosing systems, pneumatic circuits, and offshore subsea control lines.
Instrumentation tubes must deliver:
Our tubes are supplied in:
Best for: Medium-size precision tubing used in instrumentation, hydraulic & pneumatic control.
Grades:
Characteristics:
Used in: Instrumentation panels · Hydraulic lines · Gas sampling · Steam lines
Best for: High-purity, small OD control lines & sensitive instrumentation systems.
Grades:
Characteristics:
Used in: Panel instruments · Chemical dosing · Gas lines · Offshore umbilicals
1. Cold Drawing / Cold Rolling
Achieves tight tolerance & uniform mechanical strength.
2. Bright Annealing (BA Furnace)
Ensures clean ID, low carbon, corrosion resistance.
3. Pickling & Passivation
Removes scale & impurities for clean-bore finish.
4. ID/OD Polishing
Ensures smooth internal surface and accurate flow.
5. Coil-forming (Optional)
For long continuous control lines.
6. NDT Testing
Eddy current + hydrotest ensure leak-free performance.
| Application | Media | Industries |
| Impulse Lines | Steam · Gas · Liquid | Oil & Gas · Power |
| Hydraulic Instrumentation | Hydraulic Oil | Machinery |
| Gas Sampling Lines | Natural Gas | Analyzer Shelters |
| Panel Tubing | Air · Nitrogen | Process Panels |
| Steam Trace Tubing | Saturated Steam | Thermal Power |
| Standard | Grade | Price (INR/kg) | Price (USD/kg) |
| ASTM A269 | 304/304L | ₹250 – ₹350 | $3.30 – $4.60 |
| ASTM A269 | 316/316L | ₹280 – ₹420 | $3.50 – $5.35 |
| ASTM A632 | 316/316L | ₹320 – ₹490 | $4.00 – $6.00 |
| Nickel Alloys | 625/600/400 | ₹1,500 – ₹3,200 | $18 – $38 |