hat
jeneral tanperati se pipiti oubyen egal to450℃, pwesyon a se pipiti oubyen egal a 6.4Mpa, tòti ak nan vant miray tanperati diferans ant 120 ℃ oubyen pi wo, oubyen okazyon an ki an mwayèn dekale.
eng
general temperature is less than or equal to 450℃, the pressure is less than or equal to 6.4Mpa, shell and tube wall temperature difference between 120 ℃ or above, or the occasion of the medium scaling.