PURPOSE: To facilitate work and to obtain a superior evenly glazed pipe by feeding glaze into an uprighted pipe from the bottom and discharging the glaze from the bottom.

CONSTITUTION: Glaze 5 is fed into an uprighted pipe 1 from the bottom 1a, filled into the pipe 1 up to a prescribed height and discharged from the bottom 1a at a constant flow rate. An evenly glazed pipe having a uniform thickness of glaze is obtd. by the easy work in a narrow place.