Hi dear all experts

I would like to know what is the clear definition of high/low temperature sevice in ASME section 2 part A.
Does High temperature means 300 C, 400 C, 500 C........?
Does Low temperature means -300 C, -200C .........?

Regards,
Ethanhan

IT IS NOT MENTIONED IN CODE.
HOWEVER PRESSURE VESSEL HANDBOOK-AUTHOR BEDNAR GIVES LIKE THIS :

CRYOGENIC TEMP.-254 C TO -102 C
LOW TEMP.-101 C TO 0 C
INTERMEDIATE:1 C TO 413 C
ELEVATED: 414 TO 816 C