plastic bellow cover is made up with nylon cloth,plastic cloth fabric or synthetic rubber through folding. the material of plastic accordion cover can endure high temperature oil, and cooling fluid,the highest touchingtemperature can reach 4000Cm and the fastest speed can reach 100m/min.. Structure of accordion cover: 1.material:nylon or protective cloth. 2.support: pvc sheet. 3. connective plate resin plate, iron plate