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China Rail Insulator Nylon Inserts for Railway Track Fastening Systems Supplier
The rail sleeve is also called nylon insert, plastic dowel, nylon dowel, plastic sleeve.
Railway plastic dowel pre-inserted into the concrete sleepers and used together with the screw spikes as the fastening components of rail fastening system to fix the railroad tracks.
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Applications of Nylon rail inserts:
- Cast-in place slab track anchoring
- Concrete tie inserts for turnouts
- Segmental tunnel concrete ring inserts
- Restraining rail brackets
- Direct fixation plates
- Electrical isolation anchor
- Anchor guard-rail
The material of our railway plastic dowel is made using either HDPE or PA66 + GF30% and the product color is available in white, black and dark brown.
Technical Parameter of HDPE Rail Plastic Dowel
| 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) |
Technical Parameter of PA66 Railway Nylon Plastic Sleeve
| 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 | 4.0 |
| 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 |
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