GB/T 6060.1 Surface roughness comparison of the sample block casting surfaces
CB/T6414-1999 the technical standard refers to the actual production. In order to provide the supply and demand sides of the parts a requirement for the dimensional tolerance values of the parts. Divided into & lt; batch and mass production castings of dimensional tolerances & gt; and & lt; small batch and single piece production castings of dimensional tolerances & gt; two standards.
The standard CT9 refers to the best dimensional grades that can be achieved for all alloys (non-ferrous, ferrous) for sand casting by hand, shell and machine sand casting. It belongs to the category of non-precision casting.
CT9, 10, 12 and 13 are casting tolerance classes.
CT9, 10, 12 and 13 are casting tolerance grades.