A screw joint for pipes, in particular sanitary and floor heating pipes of, for example, plastic material or a composite material of metal and plastics is provided with at least one screw joint member with a substantially cylindrical portion, in which a thread with at least one helical raised portion of, in particular, triangular cross section is formed. The at least one raised portion of the thread has a base section adjoining or located in the cylindrical portion and an end section radially adjoining the base section. Within at least a part of the course of the thread, at least the end section of the at least one raised portion is made of a material that is more elastic than the material of the cylindrical portion.