A.15~20mm B.5~10mm C.8~13mm D.10~15mm
A.2類 B.3類 C.4類 D.5類
A.壓力為0.25-0.32MPa B.壓力為0.22-0.26MPa C.壓力為0.28-0.32MPa D.壓力為0.30-0.34MPa