A.8.4~17.5MPa B.10.5~21 MPa C.17.5~21 MPa D.21~24 MPa
A.8.4~17.5MPa B.10.5~21MPa C.17.5~21MPa D.21~24 MPa
A.2500psi B.5000psi C.10000psi D.15000psi