No. But that isn't necessary. Poohbah is absolutely correct (he almost always is;) ). Continuous rod warheads don't have "joints". They are composed of a single piece of very dense material scored in such a way that when the explosive inside it explodes, the metal expands, transforming it from a cylinder shape into a ring, which subsequently divides into an expanding circle of separate, rod shaped fragments. Missile warheads represent the pinnicle of design efficiency. They must maximize destructive capability, in a very small package. There is no room for the waste represented by small, low mass, non-explosive ceramic spheres.