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Product Introduction
The KPO fastening system is a special connection component for rails in the railway turnout area, with KPO3, KPO6, and KPO9 as product categories. The system consists of KPO clips, adjustable sleeper screws, high-strength T-bolt nuts, disc springs, and elastic iron pads. The main material of the clip is Q235, and the screws and other force-bearing parts are made of 35CrMo alloy steel. In view of the frequent conversion and complex force characteristics of the turnout area, the geometric position of the rails can be accurately maintained. The advantages lie in flexible adjustment performance and stable clamping force. The production process involves die forging, precision grinding, surface nickel plating for corrosion protection, and high-precision assembly of components to ensure the reliability of turnout operation.
The KPO type spiral spike fastener system is a gusset fastener system for railway tracks. It uses spiral spikes as the main fastening components and plays an important role in railway track construction and maintenance.
System composition
KPO gusset: It is a key component of the system. It is usually made of high-strength steel. Through a specific design and structure, it can effectively buckle the rails and fix them on the sleepers to prevent the rails from moving vertically and horizontally during train operation.
Spiral spike: Generally, high-quality carbon structural steel, such as Q235-A steel, etc. The specifications are M24×195, etc. Its function is to pass through the reserved holes on the KPO gusset and the sleeper, and fasten the gusset to the sleeper through threaded connection to provide stable fastening force.
Other accessories: May also include washers, insulating gauge blocks, rubber pads, etc. Washers are used to increase the contact area, disperse pressure, and prevent damage to the surface of the gusset plate and sleeper; insulating gauge blocks are used to maintain the gauge of the rails and provide certain insulation properties to prevent current from being transmitted to the sleepers through the rails; rubber pads are placed between the rails and the gusset plate to play a buffering and shock-absorbing role, reducing the impact of vibration and noise generated during train operation on track components.
Product Specifications
| Specifications for ONE unit of KPO type rail fastening system | ||
| Item | Quantity | Material |
| KPO clip | 2 | Q235 |
| Screw spike | 2 | Grade 4.6: Q235 |
| Grade 5.6: 35# | ||
| Grade 8.8: 45# | ||
| HS bolt 4 | 4 | Grade4.6: Q235 |
| Grade5.6: 35# | ||
| Grade8.8: 45# | ||
| Hex nut 2 | Grade 5: 35# | |
| 2 | Grade 8: 45# | |
| Double coil spring washer | 2 | 65Mn |
Product Application
Product Packaging & Delivery
Foldable metal mesh basket + waterproof and dustproof cover packaging: Foldable metal mesh baskets are used to load fasteners. The mesh design facilitates ventilation and customs inspection. After the fasteners are loaded into the basket, they are covered with a waterproof and dustproof cover, which is tightly fixed to the edge of the mesh basket with elastic ropes. When multiple foldable metal mesh baskets are stacked, the bottom basket is equipped with support feet and the top basket has a slot to ensure stable stacking. After stacking, the entire set of baskets is fixed with plastic strapping, and can be folded to save space when idle.
As a leading exporter of railway fasteners, GNEE RAIL is committed to building a global supply chain service platform. We integrate domestic high-quality production resources, and our products cover a full range of fasteners such as rail fasteners and sleeper bolts. We have established a strict quality assessment model and implement monthly quality assessments on cooperative factories. All exported products are accompanied by complete test reports.
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