... good bearing capability.Size Thickness for Rock wool: 50,75,100,150,200mmThickness for steel sheet: 0.4mm ... 80-150 kg/m3Feature:Rock wool sandwich panel uses vertical-hair-shaped rock wool as inner side, colored ... selecting the rock 105kg/m3 and the thickness 50-100mm as the core, the sound coefficient will ... ) 30minsThe fireproof degree of rock wool panels of 50-75-100mm are 0/1 (with their fire-proof ...