... .6kg 20FT can load 8000-10000pcsStone coated metal roofing advantages:1.Color Stone Coated metal Roof provides the advantages of long life ... , strength, durability and beauty.Stone-coated steel roof are durable in hurricanes,blizzards,tornadoes,hail,fire and ... .3.Light,Versatility and Economy-weight of Color Stone Coated metal Roof is only 1/6 weight of an ordinary cement ...