A216WCB or A352LCB

[chtimi]

Our customer would like to install a centrifugal pump
Liquid pumped: Hydrocarbone
Operating température: Mini -30°C Maxi +200°C
Minus 20°C is just for external conditions when the pump is switched off and have to start again.
My question is about the choice of the metallurgies to use for casing pump and internal parts.A216WCB is normally for high Temperature and A352LCB for low temperature.For internal parts I think that pieces in13%Cr is correct.
What do you think about this case?
Thank you.

 

[bmoorthy]

A216 WCB will do for all the parts. So long as you test it at (-30) and find the impact values are more than 27 J. It is not necessary to have 13 % Cr internal. For further guidelines refer API 610 8 th or the the recent 9 th edition.

+ 200 is not considered high temp, it is moderate temperature and (- 30) is not considered low temp, it is considere sub zero temperature.