dear pulp1:
HG20592 follow PN series, the include SI and English.
but totally follow Euro system.
GB/T 12459 : as for pipe whose DN is less than DN800, They are same as B16.9 totally.
it is not easy to explain with simple words, if any question, you can type it in here and I can give you...
Dear howmansito:
For your issue, can you attach your C2 model?
For SIF, I can get the SIF by NOZZLEPro for you.
the discussion for C2 need model .
good lucky.
