Rail Plastic Dowel - Railway Fastening
Size: for different sizes of screw spikes or anchor bolts
Standard: GB, DIN, UIC, AREMA/ASTM, BS, JIS etc
Surface: customization
Packing: upon customers
what is a Rail Plastic Dowel?
A rail plastic dowel is a component in a concrete sleeper system that acts as a threaded anchor for screw spikes and other fasteners, securing the rail to the concrete tie. It is pre-inserted into the concrete sleeper and provides a strong, reliable fastening point while also preventing corrosion and offering electrical insulation.
The Function and purpose of Railway Plastic Dowel
- Secures the rail: The dowel forms a threaded base for the screw spike, ensuring a secure and stable connection between the rail and the concrete sleeper.
- Prevents corrosion: Its design helps prevent the screw spike from loosening and corroding over time.
- Provides electrical insulation: Made from materials like PA66 or HDPE, the dowel isolates the track from the reinforced concrete structure, preventing electrical conductivity that could be a safety hazard.
- Protects the sleeper: It protects the concrete sleeper from damage during the installation and servicing of the fastening system.
Rail plastic dowel material specifications
HDPE (High-Density Polyethylene): A common material that is durable and provides good insulation.
| HDPE Plastic Dowel Specifications | ||||
| No. | Technique parameter | Unit | Technical requirement | Value |
| 1 | Density | g/ | 0.95-0.98 | 0.95 |
| 2 | Tensile strength | Mpa | ≥19 | 19 |
| 3 | Elongation | % | >80 | 150 |
| 4 | Melting point | °C | 170-190 | 190 |
| 5 | Insulation resistance | Ω | ≥1×1010 | 3.5×1010 |
| 6 | Hardness | A | ≥98 | 98(A) |
PA66 (Polyamide 66): Often reinforced with glass fiber for high strength and durability.
Material PA66 : Nylon 66.69%, glass fiber 30%, other 1%.
| PA66 Plastic Dowel Specifications | ||||
| No. | Technique parameter | Unit | Technical requirement | Value |
| 1 | Density | g | 1.3-1.45 | 1.45 |
| 2 | Tensile strength | Mpa | ≥170 | 178 |
| 3 | Elongation | % | ≤4.4 | 4 |
| 4 | Bending Strength | Mpa | ≥250 | 290 |
| 5 | Impact Strength(No gap) | KJ/m2 | ≥80 | 85 |
| 6 | Melting point | °C | 250°C-270 | 270 |
| 7 | Insulation resistance | Ω | ≥1×108 | 5×108 |
| 8 | Glass fiber content | % | 30-35 | 35 |
| 9 | Hardness | HRR | ≥110 | 118 |
How does a plastic dowel work?
How it works?
- The plastic dowel is embedded into a pre-cast concrete sleeper.
- It is used in combination with other components like the screw spike, guide plates, and rail clips.
- As the screw spike is tightened into the dowel, it creates a tight, secure fastening system that holds the rail in place.
Product Packaging & Delivery
Rail plastic dowels are typically packaged in woven bags, often with a weight of around 25kg each, and are frequently shipped on a pallet for added stability. These bags are sometimes fumigation-free and the pallets provide a way to transport the dowels, which are part of larger railway fastening systems, via trucks and trains.
GNEE RAIL is a leading railway fastener manufacturer in China, holding production licenses issued by the Ministry of Railways. Leveraging advanced CNC machining technology and stringent quality inspection standards, we enhance product performance. Our railway fastener products feature minimal installation clearance and strong fastening reliability, meeting track fixation requirements for different rail gauges. Custom manufacturing is available based on customer drawings or samples. Our technical team responds promptly and optimizes production details, consistently adhering to the commitment of "supplying optimal products at optimal prices," serving global rail transit construction and maintenance enterprises.
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