Novel connection mode for steel mesh skeleton plastic compound pipelines

The invention discloses a novel connection mode for steel mesh skeleton plastic compound pipelines. By adopting two inner sleeve iron castings, two outer sleeve iron castings and flexible quick couplings to serve as pipeline connecting pieces, firstly, the two outer sleeve iron castings are sheathed onto the outer pipe walls of the ports of the pipelines; then, one ends of the two inner sleeve iron castings are jacked into the ports of the pipelines by adopting a pipe jacking machine; then, the ports of the pipelines, which are provided with the two inner sleeve iron castings and the two outer sleeve iron castings, are put in a shrink machine to be extruded, shrunk, sealed and fixed; the other ends of the two inner sleeve iron castings extend out of the ports of the pipelines; the two inner sleeve iron castings extending out of the ports of the pipelines are connected together in the manner of clamping by using the flexible quick couplings; rubber seal rings are respectively arranged in the flexible quick cou