The DT railway fastening system, as a mature fastening solution for urban rail transit, demonstrates outstanding performance advantages in vibration reduction, adjustability, environmental resistance and maintenance, perfectly meeting the operational requirements of subways and light rails.
Its most significant advantage lies in superior vibration damping. The two-stage elastic design combines rail pad and plate pad to achieve approximately 21kN/mm vertical static stiffness, reducing acceleration transfer function values by 5-10dB compared to conventional fasteners. This "dual damping" structure effectively absorbs vibration energy generated by train operation, minimizing impacts on tunnel structures and surrounding buildings. Particularly suitable for metro lines in urban centers, it ensures both operational smoothness and environmental friendliness.
The system provides flexible and precise adjustment capabilities. Gauge adjustment is achieved through polygonal gauge blocks - quadrilateral blocks allow 6mm adjustment while hexagonal blocks reach 10mm, meeting lateral precision requirements. Vertical adjustment up to 15mm is possible by stacking pads of different thicknesses, accommodating elevation changes caused by subgrade settlement or rail wear. This modular adjustment requires no complex tools, ensuring high construction efficiency and adaptability to long-term track geometry changes.
Excellent environmental resistance is another key feature. Metal components like T-bolts and baseplates feature anti-corrosion treatments (e.g. zinc plating), demonstrating outstanding performance in metro's humid and dusty environments - passing 480-hour salt spray tests without red rust. Insulation components use high-strength nylon materials maintaining stable resistance above 10⁸Ω, preventing stray current interference with track circuits and ensuring reliable signaling system operation. Rubber pads employ anti-aging formulations with less than 20% elasticity degradation between -40°C to 60°C, suitable for various climate zones.
The system offers controllable maintenance costs. Standardized design of wear-prone components like spring clips and gauge blocks enables replacement without disassembling the entire structure - single component replacement takes only 10-15 minutes. With simplified connections and fewer failure points, the system requires 30% less maintenance frequency throughout its lifecycle compared to conventional fasteners, significantly reducing service interruptions - ideal for high-passenger-volume urban rail lines.
GNEE RAIL is a professional trading company focusing on the export of railway fasteners, committed to providing reliable rail connection products for global railway construction projects. The main products include a full range of railway fasteners such as various spring clip fastener systems, sleeper bolts, anti-loosening washers and insulating components, which are suitable for various application scenarios such as conventional railways, heavy-duty railways and urban rail transit.