ASTM D7091-05 Standard Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic,Nonconductive Coatings Applied to Non- Ferrous Metals
ASTM D7091-05黑色金属上无磁性覆层和有色金属上不传导覆层干膜厚度的无损测量规程
样品要求：至少50×50mm, 3 pcs
周期：7~9工作日