Rockwool board is the most economical insulating material. It is mainly applicable to insulation ,sound absorption and fireproof of power plant, oil deport,metallurgical and chemical industry equipment, such as: boiler, oil tank, heat exchanger, reaction tower, dust remover, dryer, oven, big pipes. Specification Density 40. 50. 60. 80. 100. 120. 150kg/m3 Thickness 30. 50. 80. 100mm Size L x W 1200*600mm Physical properties Thermal Conductivity <= 0.035W/mk 70 +/- 5 degree centigrade Fireproof Inflamable Grade A Applicable Temperature -240 to 650 degree centigrade Moistureproof >= 95%