A.1~5mmB.5~10mmC.10~20mmD.20~25mm
A.100∶0.1mmB.100∶0.3mmC.100∶0.5mmD.100∶0.8mm
A.Ra≤0.4μmB.Ra≤0.8μmC.Ra≤1.6μmD.Ra≤3.2μm