Why Choose Our 4140 Honed Cylinder Tubes?

4140 honed cylinder tubes are high-strength, precision-finished steel tubes widely used in hydraulic cylinders, industrial machinery, and heavy-duty equipment. Made from chromium-molybdenum alloy steel (AISI 4140), these tubes undergo precision honing to achieve an ultra-smooth internal surface, ensuring optimal sealing, reduced friction, and extended service life.

YUTONG INDUSTRY ,specialize in manufacturing 4140 honed tubes with strict quality control, advanced processing techniques, and industry-leading expertise. Our products meet ASTM, DIN, and ISO standards, making them ideal for high-pressure hydraulic systems, oil & gas equipment, and mobile hydraulics.

Key Advantages of 4140 Honed Cylinder Tubes

1. Superior Material Properties (AISI 4140 Alloy Steel)

✔ High Tensile Strength (850-1000 MPa) – Withstands extreme pressure in hydraulic systems
✔ Excellent Toughness & Fatigue Resistance – Ideal for dynamic, high-load applications
✔ Good Machinability & Weldability – Easier to fabricate than high-carbon steels
✔ Heat Treatable (Quenched & Tempered) – Enhances hardness (HRC 28-32) and durability

2. Precision Honing Process for Optimal Performance

Our 4140 honed tubes undergo multi-stage honing to achieve:
✔ Ultra-Smooth Surface Finish (Ra 0.2-0.4 µm) – Minimizes wear on seals & pistons
✔ Tight Dimensional Accuracy (±0.02mm) – Ensures perfect fit with hydraulic components
✔ Improved Straightness (≤0.1mm/m) – Reduces friction and uneven wear

3. Corrosion & Wear Resistance

✔ Optional Chrome Plating (20-50µm) – For enhanced corrosion resistance in harsh environments
✔ Phosphating or Nitriding Treatments – Improves surface hardness and longevity