Abstract: The present invention relates to apparatus for the continuous enamelling of tubes. The apparatus disclosed incorporates an upender which is installed with provision for displacement along guides so as to transfer pipes from a horizontal position into a vertical one. These guides are arranged in vertical parallel planes, at least one guide in each plane, and each of the guides consists of several portions: a horizontal portion, an inclined one, and a portion running vertically so as to transfer the tubes to a trolley located on an annular splitable monorail which is made up of immovable sections and movable ones which displace in the vertical plane integrally with the tube during the process of enamelling. The apparatus also incorporates a means of applying enamelling slip and a means of heating designed to dry and fuse the slip. The apparatus disclosed displays a high capacity and allows to apply the slip to tubes of various lengths and diameters.