A.4.5Mpa B.4.8Mpa C.4.9Mpa D.5.1Mpa
A.0.01~0.03(MPa) B.0.02~0.05(Mpa) C.0.05~0.08(Mpa) D.0.08~0.10(Mpa)
A.1.0,1.05 B.0.95,1.05 C.1.10,0.95 D.1.05,0.95