I.D.  | 
    O.D.  | 
    W.P.  | 
    W.P.  | 
    MIN.B.P.  | 
    W.T.  | 
  ||||
Dash  | 
    In.  | 
    mm  | 
    mm  | 
    MPa  | 
    psi  | 
    MPa  | 
    psi  | 
    mm  | 
    g/m  | 
  
-4  | 
    1/4  | 
    6.3  | 
    12.7  | 
    25  | 
    3625  | 
    100  | 
    14500  | 
    50  | 
    220  | 
  
-5  | 
    5/16  | 
    7.9  | 
    14.3  | 
    21  | 
    3045  | 
    84  | 
    12180  | 
    50  | 
    250  | 
  
-6  | 
    3/8  | 
    9.5  | 
    18  | 
    25  | 
    3625  | 
    100  | 
    14500  | 
    100  | 
    420  | 
  
-8  | 
    1/2  | 
    12.7  | 
    19.8  | 
    16  | 
    2320  | 
    64  | 
    9280  | 
    100  | 
    400  |