Our products: Epoxy glass fiber reinforced entwined tube with complete specification is developed for
110kV~1,000kV composite hollow insulators, reactors, arresters, fuses, mutual inductors, on load tap changers,
transformers and other high-voltage electrical equipment structures, with performance parameters reaching IEC
standards, and nationally advanced level.
It is entwined by uninterrupted fiber wet method; twining angle, ±50~55 (we can adjust twining angle to reach
your mechanical performance requirement); fiber content (weight ratio), 70~75%; density, 2.00 g/cm3; water
absorption, 0.01 %; axial thermal expansion coefficient, 1.8 E-05 1/K; glass transition temperature, 110~120 ºC;
chemical resisting mineral oil: excellent; solvent and dilute acid: good; tensile elastic modulus, axially 14,000
MPa; tensile strength: axially 280 MPa; tensile strength: annularly 600 MPa; compressive strength: axially 240
MPa; bending strength: axially 350 MPa; shearing strength: 150 MPa; relative dielectric constant: 2-3.2;
dielectric dissipation factor: 0.003-0.015; partial discharge capacity≤5; insulation strength: axially 3~6 kV/mm;
insulation strength: radially 10~12 kV/mm; lightning impact: 110 KVP; power frequency impact: 50 KV; thermal
rating: B, F and H; internal diameter>6mm ; external diameter<500mm; length<1,500mm. The above data is only
for reference, our sleeve parameters are customized according to customer demands.