Rockwool acoustic Board / Panel 1)Density:40-150kg/m3 2)Thickness:30-100mm 3) ... ,metallurgical and chemical industry equipment, such as: boiler, oil tank, heat exchanger, reaction tower, dust remover, dryer, oven, big pipes.SpecificationDensity40 ... Grade AApplicable Temperature-240 to 650°CMoistureproof≥95% Rockwool acoustic Panel/Board