This product is used in dyeing and printing industry in the hot stenter stereotypes machine guide, including the main rail and vice-rail; in the main guide of the base board has set up a pair of support panels, support in these two settings on the board, respectively, have a swallowtail inlay trough, and these two swallowtail inlay slot opposite the slot and set up; Deputy Guides are also provided in the base of the shelves has a dovetail slot inlay. The above-mentioned guide rail structure is more simple, and will guide the length of similar or identical graphite directly embedded in the dovetail slot, the installation is very convenient. Moreover, the work will not be exfoliated graphite failure, can greatly improve the efficiency of the equipment.