Glass fabric duct

Construction : Glass fabric coated with both external PVC inflammable retard agent and internal aluminium foil laminated with polyesterfilm is adhered seamless in high temperature with coated high tensile spring steel wire reinforced. Material : 1. external - Glass fiber fabric+PVC inflammable retard agent 2. internal - aluminium foil+polyester film laminated3. High tensile spring steel wire coated with anti-corrosion agent Steel wire thickness : 1.2mm ~ 3.0mm Adhension : High frequency heating and mechanically locked on a high temperature 500