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Cold Drawn · Seamless · Precision Hydraulic Tubing
Inox Steel India
Inox Steel India is a leading manufacturer, stockist, and exporter of Hydraulic Tubes manufactured in accordance with DIN 2391 and EN 10305 standards.
These tubes are engineered for high-pressure hydraulic circuits, hydraulic cylinder manufacturing, heavy-duty machinery, automotive systems, precision assemblies, and load-bearing fluid transfer systems.
Hydraulic tubes operate under demanding conditions involving:
Our cold-drawn precision tubes ensure outstanding dimensional accuracy, smooth bore finish, high tensile strength, and excellent performance in hydraulic and pneumatic systems.
We supply hydraulic tubes in ST35, ST37.4, ST45, ST52, E235, and E355 grades, fully compliant with European standards.
Hydraulic tubes must withstand:
Hence, the industry prefers DIN 2391 and EN 10305 because these standards guarantee:
Common grades:
Key advantages:
Types:
Grades:
Advantages:
1. Cold Drawing
Achieves tight OD, WT, and ID tolerances.
2. Normalizing / Stress Relieving
Ensures uniform mechanical properties.
3. Bright Annealing / Phosphating
Enhances corrosion resistance and internal cleanliness.
4. OD Finishing & Straightening
Perfect straightness for hydraulic assembly.
5. Inner Surface Cleaning
Essential for hydraulic oil purity.
6. NDT Testing
Eddy current & UT test ensure leak-proof tubes.
| Application | Pressure | Media | Industries |
| Hydraulic & Pneumatic Lines | Medium | Hydraulic oil, air | Automotive · Machinery |
| Fuel Injection Lines | Medium-High | Diesel, petrol | Automotive |
| Brake & Steering Lines | Medium | Brake fluid | Commercial Vehicles |
| Heat Exchanger Piping | Medium | Oil, water | HVAC · Industrial |
| General Machine Hydraulics | Medium | Hydraulic oil | Manufacturing |
| Application | Pressure | Industries |
| Hydraulic Cylinder Outer Tubes | High | Construction · Mining |
| Telescopic Cylinder Tubes | High | Material Handling |
| High-Pressure Feed Lines | High | Press Machines |
| Earthmoving Equipment | High | Excavators, Loaders |
| CNC Hydraulic Assemblies | High | Automation Systems |
| Application | Pressure | Media | Industries |
| Hydraulic Cylinder Tubes | Very High | Hydraulic oil | Construction · Mining |
| Hydraulic Power Packs | Very High | Mineral oils | Industrial Hydraulics |
| Heavy-Duty Mobile Hydraulics | Very High | Pressure fluids | Earthmoving |
| Impact & Load-Shock Systems | Very High | Oil | Steel Mills |
| Marine Hydraulic Steering | Very High | Hydraulic oil | Marine |
| Grade | Condition | Price (INR/kg) | Price (USD/kg) | Applications |
| ST35 / E235 | NBK | ₹85 – ₹135 | $1.10 – $1.65 | Medium Pressure Lines |
| ST37.4 | BK | ₹95 – ₹150 | $1.25 – $1.90 | Auto Hydraulics |
| ST45 / E355 | NBK/BK | ₹110 – ₹170 | $1.35 – $2.20 | High Pressure |
| ST52 / E355 | NBK/BKS | ₹120 – ₹185 | $1.50 – $2.50 | Cylinder Tubes |
ST52 / E355 → highest strength + perfect for honing/skiving. Yes — ST45 / ST52 tubes in NBK/BKS condition handle high-pressure hydraulic circuits. Yes — fully finished honed/roller-burnished tubes for cylinder barrels. Yes — phosphated + oiled tubes supplied for automotive & hydraulic use. Yes — to GCC, Africa, Europe, USA, and South American markets. Which grade is best for hydraulic cylinders?
Are these tubes suitable for 400–600 bar pressure?
Do you supply honed and skived tubes?
Are phosphated tubes available?
Do you export hydraulic tubes?