What are the different specifications of SKL Clips?

SKL Clips are not a single specification product, but rather a series of railway elastic fasteners. In international railway engineering, the common, mature, and widely used SKL Clip specifications mainly include the following:

I. Common SKL Clip Models
The most common models currently used in engineering applications are:

• SKL 1
• SKL 3
• SKL 12
• SKL 14
• SKL 15

Among these, SKL 12 and SKL 14 are the most widely used specifications, commonly used in high-speed railways, heavy-haul railways, and urban rail transit systems.

II. Main Differences Between Different Specifications
Different SKL Clip specifications differ mainly in the following aspects:

1. Different Elastic Downforce
Different models provide different under-rail clamping forces to meet the needs of different axle loads, speed levels, and track conditions.

2. Different Geometric Dimensions
Including wire diameter, bending shape, overall height, and installation stroke, these parameters directly affect the elastic performance and service life of the clip.

3. Different Compatible Track Systems

Each SKL Clip model can be matched with different rail types (such as UIC60, UIC54, 60E1, etc.) and different sleeper or fastening systems.

4. Different Applicable Line Grades

SKL 1 / SKL 3: Primarily used for traditional railways or specific fastening systems.

SKL 12 / SKL 14: Suitable for high-speed railways, heavy-haul railways, and subways.

SKL 15: Used for lines with higher requirements for clamping force and fatigue performance.

III. Customization Support

In addition to standard models, SKL Clips can also be customized according to project needs, such as:

Wire diameter and elasticity adjustment

Different anti-corrosion surface treatments

Reinforced design for special climates or heavy-load conditions

SKL Clips mainly consist of multiple specifications, including SKL 1, SKL 3, SKL 12, SKL 14, and SKL 15, with different specifications corresponding to different track structures and operating conditions. This modular design allows SKL Clips to be widely used on various modern railway lines.