(n.) A bushing for expanding the end of a flue to fasten it tightly in the tube plate, or for partly filling up its mouth.
FERRULE
Meaning of FERRULE in English
Webster's English dictionary. Английский словарь Webster. 2012
(n.) A bushing for expanding the end of a flue to fasten it tightly in the tube plate, or for partly filling up its mouth.
Webster's English dictionary. Английский словарь Webster. 2012