Description
Technical Parameters
Technical Specification Table: Railway Dog Spike
| Category | Specification | Details / Value |
|---|---|---|
| Product Name | Railway Dog Spike (also known as Track Dog Spike, Cut Spike) | |
| Mechanical Properties | Tensile Strength | 400 - 550 MPa |
| Hardness | HRB 70 - 85 (Rockwell B Scale) | |
| Coating/Finish | Standard | Hot-Dip Galvanized to ASTM A153 or equivalent. Coating mass typically ≥ 600 g/m². |
| Alternative | Black (uncoated), for temporary tracks or indoor use. | |
| Dimensions & Weight | Length (L) | Common sizes: 127mm (5"), 140mm (5.5"), 152mm (6") |
| Shank Size (S) | ~16mm x 16mm (5/8" x 5/8") at the head, tapering to a point. | |
| Head Size (H) | ~32mm x 25mm (1.25" x 1") | |
| Weight | Approx. 0.45 - 0.68 kg (1.0 - 1.5 lbs) per spike, depending on size. | |
| Application | Rail Type | Flat-bottomed rails (e.g., ASCE, AREA, UIC profiles). |
| Sleeper Type | Hardwood or Softwood Sleepers. Not for use with concrete, steel, or composite sleepers. | |
| Typical Use Cases | • Traditional mainlines (in some regions) • Secondary and low-speed lines • Industrial sidings and spurs • Mining railways • Heritage and tourist railways |
Key Characteristics (Bullet Points):
- Historical Significance: One of the earliest and most iconic rail fastening systems, largely superseded by elastic fasteners (e.g., clips) on modern mainlines.
- High Holding Power: The square shank provides excellent resistance to rotation and pull-out in wooden sleepers.
- Maintenance Intensive: Requires frequent inspection and re-driving (re-tamping) to maintain gauge and tightness, especially as the wood sleeper ages.
- Durability Limitation: The performance is intrinsically linked to the condition of the wooden sleeper. Corrosion can be an issue if not properly galvanized.
- Specialized Installation: Driving requires skill and specialized heavy tools to avoid damaging the spike or the sleeper.
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