日本欧美午夜福利-久久精品国1国二国三-欧美精彩狠狠色丁香婷婷-欧美成人在线免费观看-午夜看片在线免费观看-欧美区日韩在线观看-国产激情在线观看

Widely used in industries such as paint, coatings, inks, food, pharmaceuticals, etc.A fine-grained plate is a flat steel block with grooves on the surface, and the depth of the grooves ranges from maximum at one end to zero at the other.On the steel block, there is a scale unit engraved to indicate the depth of the groove, in order to read the size of the particle value.

 

GB/T 1724，6753.1，13217.3，13217.5

ISO 1524

 

 

 

Grind Gauge, scraper, instruction