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Rail Insulator, Plastic Sleeve, Nylon Plastic Dowel – Anyang Railway Equipment

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 Plastic Dowel(plastic sleeve):

  • 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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