铸铁圆平板基本内容 铸铁圆平台（平板）规格（mm）精度(um)000级1级2级3级ф300×,8035.5112260ф500×,1003.56.5132670ф800×,15048163280ф1000×,1805102040100ф1200×,2005.5112244110ф1500×,2006122346120ф1800×,2206.5132652130ф2000×,2507142856140ф2500×,3008163264160ф3000×,3509183672180ф3500×,40010204080200ф4000×,45011224488200