Pipe connections

Claim 1

A pipe connection, comprising a pair of plastic-lined and inside-insulated pipes, said pipes being axially separated to provide a gap therebetween, two concentric, substantially coextensive pairs of half shells applied around the joint ends of the two pipes, and large-area bonding interstices between the respective outer and inner surfaces of the two pipes and the inner pair of half shells, on the one hand, and of said pairs of half shells, on the other, gaps provided between said half shells being angularly staggered between said pairs, wherein the two pipes are provided with inner linings, and an inner sleeve having a substantially constant outside diameter throughout its entire length, said outside diameter of the sleeve being slightly larger than the inside diameter of said linings, said sleeve applied within said linings and substantially symmetrical with respect to said pairs of half shells, a bonding agent applied to the respective inner and outer surfaces of said linings and said sleeve and to the inner surfaces of said half shells, said bonding agent at least partly filling up the annular gap between the joint ends of the two pipes.