The Type I fastening system is a commonly used clip system in railway track construction, mainly applied to ballasted tracks of standard-gauge railways. With a simple structure and strong versatility, it meets the needs of general railway transportation.
System Composition
The system primarily consists of ω-shaped elastic clips, gauge retainers, retainer seats, and spiral spikes:
ω-shaped elastic clips (core components) are divided into Type A (for middle positions) and Type B (for joint positions). They clamp rails via elasticity, providing a stable clamping force of ≥8 kN to secure the rail-sleeper connection.
Gauge retainers adjust the gauge (typically within ±8 mm) to fit different track designs.
Retainer seats buffer and support, distributing forces between clips and sleepers.
Spiral spikes (mostly Q235-A steel) fasten components to sleepers.
Elevating vs. Non-elevating Types
Elevating fasteners:
Add 1–10 mm elevating pads between rails and sleepers to adjust track height by 0–10 mm.
Suitable for areas requiring frequent correction of track irregularities (e.g., settled sections post-operation) or ballastless tracks with high smoothness demands (especially for 60 kg/m rails).
Non-elevating fasteners:
Simpler structure without elevating pads, focusing on gauge maintenance.
Used for 50 kg/m rail ballasted tracks or 60 kg/m rail lines with stable heights (e.g., early conventional railways, low-grade lines, and sections with subgrade stability, minimal height variation, and curve radii ≥295 m).
Practical Applications
The Type I fastening system plays a key role in railway construction and maintenance, leveraging mature technology and excellent cost-effectiveness.
GNEE RAIL is a professional company focusing on the international trade of railway fasteners, mainly supplying various track fasteners, connecting bolts, elastic washers and other products. We have stable production bases and a professional quality inspection team to ensure that each batch of products meets international railway industry standards.