... wire,mainly used for heat preservation of large-caliber pipeline,storage tank,large-scale equipment,irregular thing,valve and pipe ... roofs.Rock wool glass cloth felt:it's used in large-caiber industrial equipment and construction structure with the properties ... be used as insulated materials of boiler,shipping,valve and large-caliber and irregular pipelines. rockwool insulationDensity: 50--120kg/m3 ...