Clip I Rail Fastening System Overview
Clip I Rail Fastening System is a widely used method for securing rails to railway sleepers or ties. It is designed to provide a secure and durable connection while allowing for some degree of flexibility to accommodate thermal expansion and contraction of the rails.
The Clip I system typically consists of a spring steel clip that is attached to the rail base, a plastic or rubber pad that is placed between the clip and the sleeper to dampen vibrations and reduce noise, and a variety of fasteners such as screws or bolts to secure the clip to the sleeper.

Technical Parameters
| Item | Executive Standard | Type |
| Clip I Rail Fastening System | (Line 3156) TB/T1495.1-5-92 | Screw spike |
| Washer | Q235 | 6X25X50 |
| Nut | Q235 | M24 |
| Rail Clip | 60Si2Mn | A clip |
| Rail Clip | 60Si2Mn | B clip |
| Nylon Insulator | PA66 | 2-4 |
| Nylon Insulator | PA66 | 0-6 |
| Rail gauge apron | Q235 | 6# |
| Rail gauge apron | Q235 | 10# |
| Rail gauge apron | Q235 | 14# |
| Rail gauge apron | Q235 | 20# |
| Rubber Pad | Rubber | P50 |
| P60 | ||
| Rubber |

