The utility model provides a steam pipe joint. A steam pipe is stretched into a main connecting pipe sleeve; locking threads are arranged in one end of the main connecting pipe sleeve, and the inside of the other end of the main connecting pipe sleeve is a cone-shaped cavity; each of three strip concave-convex locking sheets has a big upper end and a small lower end and is in a cone shape; the three strip concave-convex locking sheets wrap and cling to the steam pipe, pass through a retaining washer and enter an inner cavity of a locking nut; and external threads of the locking nut fit the locking threads in the main connecting pipe sleeve. The locking nut is screwed up, and then the three locking sheets are pushed into the cone-shaped cavity in the main connecting pipe sleeve, are retained and tightly clamped; as the strip locking sheets are longer than the distance of gear-ring occlusion or mechanical dead clamping in the past, the motion and friction of the steam pipe are not easy to damage a leather hose. After a long time, the locking nut can be unscrewed, and then the steam pipe is withdrawn, so as to cut off a worn segment of the steam pipe for reinstallation. The adoption of the steam pipe joint achieves the aim of prolonging the life span of the steam pipe and saving the production cost.