Ultra-thin Telescopic Casing

1: Winding angle, 45°~65° (winding angle can be adjusted according to different requirements to achieve better mechanical properties);

2: Fiber content (weight ratio), 70% to 75%;

3: Density, 2.00g/cm³;

4: Water absorption, less than 0.03%;

5: Axial thermal expansion coefficient, 1.8E-05 1/K;

6: Glass transition temperature, 110~120℃;

7: Chemical resistance Mineral oil: excellent;

8: Solvent and dilute acid: excellent;

9: Tensile elastic modulus, axial 14000 MPa;

10: Tensile strength: 280 MPa in the axial direction; 600 MPa in the circumferential direction;

11: Shear strength: 150 MPa;

12: Bending strength: axial 350 MPa;

13: Compressive strength: axial 240 MPa;

14: Relative dielectric constant 2-3.2;

15: Dielectric loss factor 0.003-0.015;

16: Partial discharge ≤5;

17: Dielectric strength: axial 3~6kv/mm; radial 10~12kv/mm;

18: Lightning shock: 110KV;

19: Power frequency shock: 50KV;

20: Heat resistance class: B, F, H;

21: inner diameter > 5mm; outer diameter < 300mm; length < 2000mm.

The above data is only for reference, the casing parameters we produce are customized for each customer's needs!

Contact available at : 

Jacky Shen - Sales manager 


  • Description

The ultra-thin telescopic casing can be used to protect the telescope and incorporates a telescopic function, which is the result of years of research and development by our manufacturer, Hetai. We utilize an ultra-thin design with the added feature of telescopic functionality, constructed using high-quality fiberglass, providing excellent resistance against scratches and impacts in daily life.

Product Specifications:

- Material: Fiberglass

- Size (collapsed): Adjustable based on different telescope models

- Size (expanded): Adjustable based on different telescope models

- Color: Options include black, silver, gray, etc.

- Weight: Adjustable based on different telescope models.

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