The composite fiberglass tube is made by wrapping the fiberglass impregnated with epoxy resin on the vulcanized fiber tube. The fiberglass wire can be wrapped on the vulcanized fiber tube at the angle required by customers, which provides the tube better strength and water resistance. In addition, a layer of gray UV-proof paint is applied on the composite tube, which prolongs its service life.
Advantages of composite fiberglass tube: 1. no sparks will be generated; 2. the formation of burnt black layer prevents excessive wear of inner liner; 3. Proper amount of gas is generated; 4. The arc is extinguished instantly. Other used names: composite epoxy fiberglass winding tube, composite tube, cutout tube, arc extinguishing tube, fuse tube, explosion-proof tube, paint wire tube, HV fuse cutout tube.
| SN | Parameter | Unit | Standard |
| 1 | density | g/cm3 | 1. 8—1.9 |
| 2 | absorption | % | 180—300 |
| 3 | shear strength | Pa(kg5/cm2) | 150—200 |
| 4 | bending strength | 100—200 | |
| 5 | compressive strength | <0.5 | |
| 6 | vertical interlayer withstand voltage | ≥1.0×106 | |
| Thickness (withstand normal voltage for 5 min)
2.0 2.5 3.0 4.0 5.0 6.0 7.0 8.0 |
KV
14 16 18 20 24 28 30 34 |
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| 7 | （500V） surface resistivity | Ω | >1.0×1012 |
| 8 | （500V） volume resistivity | Ω×cm3 | >1.0×1012 |
| 9 | dielectric loss angular tangent value at 50Hz frequancy | % | <0.5 |
| 10 | temperature resistance | ℃ | 110-220 |
| Color | Gray/natural color/any color customers need |
| Length | Maximum: 50’’/1270(mm) |
| Tube diameter | Minimum: 0.2’’/5(mm) |
