产品介绍: GAR Electroforming Cast Comparator C9铸造表面对比板 CAST microfinish Surface comparator 9 Specimens provided.包含九个样板 Cast surface values for die casting, investment, shell, centrifugal, permanent mold ferrous and non-ferrous, sand and green sand from 20 to 900 microinches (Metric Model: 0.51 to 22.86 micrometers). 压铸件、熔模、外壳、离心式、铸模、黑色金属和有色金属、砂和湿砂的铸造表面值为20至900微英寸