Description
Technical Parameters
Railway Screw Spikes: Product Specification
| CATEGORY | SPECIFICATION |
|---|---|
| Product Designation | High-Strength Screw Spike |
| Material Composition | 35CrMoA Alloy Steel / 45Mn2 Vanadium Steel |
| Thread Profile | ISO Metric Trapezoidal Thread (8° flank angle) |
| Drive Configuration | Forged Square Head / Heavy Hex Nut |
| Surface Treatment | Mechanical Zinc Plating (40-60μm) / Dacromet Coating |
| Mechanical Properties | Tensile Strength: 640-800 MPa • Yield Strength: ≥540 MPa |
| Corrosion Resistance | Salt Spray Test: 240-360 hours (Red rust) |
| Temperature Range | -40°C to +120°C (Service condition) |
Technical Application Profile
| CHARACTERISTIC | DETAILS |
|---|---|
| Sleeper Compatibility | Pre-stressed Concrete Sleepers • Hardwood Timber |
| Installation Torque | 450-600 N·m (Calibrated torque wrench required) |
| Clamping Force | 45-60 kN (Per spike) |
| Key Advantage | Maintains constant tension under dynamic loading |
| Special Applications | Turnouts • Bridge Approaches • Transition Zones |
| Maintenance Protocol | Ultrasonic tension testing during scheduled inspections |
| Design Life | 25+ years (Depending on environmental conditions) |
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