Product Name: Phenolic Paper Tube, Phenolic Paper Laminated Tube, Phenolic Paper Insulating Tube. Model NO.: ID5-25mm Brand: Kd Color: Brown Certification: ISO9001 Classification: Hybrid Insulation Materials Maximum Voltage: 10KV~20KV Thermal Rating: B 130 Material: Phenolic and Paper Chemistry: Inorganic Insulation Type: Solid Application: Insulators, Electrical Winding Insulation, Winding Wire Coating Insulation, Electrical base, Shell, Motor, Switch baseplate Length: 1000mm Trademark: kd Transport Package: Carton Specification: Wall thickness above 1.5mm Origin: China Product Description Phenolic paper tube,phenolic laminated tube,phenolic paper insulating tube.SpecificationsPhenolicpaper tube is made from impreganated electrical grade kraft paper.Phenolic resin bondedpaper tubing is formed by hot rolling baking electrical insulating rollingpaper or insulatingpaper impregnated with phenolic resin under heat and pressure. It is insulation class E(120 degree). Wth high mechanical heat-resistant and dielectric properties, it is used as insulating structural parts in electrical equipments, also used under humidity environment and in transformer oil.Test reportname of productphenolic paper tube 10.5*13.5*1000mmtime of productionMarch,2012standard no.JB/T3172-1999itemunitstandard valuetest resulttest modedensityg/cm3≥1.101.19JB/T3172-1999water absorption%≤8.05.5heat stability(120ºC/24H)-----NOT FLAWNOT KNOBelectrical strength in oil(90ºC,5MIN)-----≥8.0MV/M8.5MV/MPASSdielectric loss factor-----≤3*1022.1*102