Abstract: An electrodeposition coating facility comprising a conveyor for conveying articles to be coated, hangers each suspended from the conveyor and formed into an L-shaped configuration composed of a vertical portion and a horizontal portion, hanger support roller each disposed at or near the lower end of the L-shaped hanger and a guide rail laid along an electrodeposition coating line for guiding and holding the hanger support roller and support means each comprising a stud made of insulating plastic secured to an electrodeposition vessel and a metal support applied with insulating coating and secured to the top end of the stud for fixing the guide rail to the electrodeposition vessel. The guide rail may be passed through a subsequent cleaning vessel for removing paint dusts, etc. by applying compulsory rotation or supersonic vibration. The coating quality can be maintained satisfactorily during electrodeposition coating.