钢板厚度(mm) 每平米重量(Kg) 3 8.76 4 11.76 5 14.76 6 17.75 7 20.75 8 23.75 9 26.75 10 29.75 12 35.74 14 41.74 16 47.73 18 53.73 20 59.72 22 65.72 25 73.71 28 81.71 30 87.7