Ф200×50mm32只/套（研制单位：常州华南仪器）筛孔尺寸(mm)标准目数（目）筛孔尺寸(mm)标准目数（目）450.45403.260.355502.580.3602100.2801.6120.151001.43140.1251201.25160.11501.1180.0971600.09200.0881800.88220.0762000.8240.0632500.71260.0543000.63280.053500.6300.043600.56320.03854000.471360.03085000.45538无孔筛底盖)