machinery to crush quartz into mesh

ASTM International : Withdrawn Standards- machinery to crush quartz into mesh ,Withdrawn Standards A4- Withdrawn 1965: Specification for Medium-Carbon-Steel Splice Bars A5- Withdrawn 1979: Specification for High-Carbon Steel Joint BarsASTM International : Withdrawn StandardsWithdrawn Standards A4- Withdrawn 1965: Specification for Medium-Carbon-Steel Splice Bars A5- Withdrawn 1979: Specification for High-Carbon Steel Joint Bars