... and thermosetting epoxy resin, using the filement winding technique. GRE pipes and fittings are made from glass reinforcement and thermosetting ... epoxy resin, using the filement winding technique. GRE pipe systems are designed and qualified according to the ... the specific sealing compound 5.Specialized fittings Flange, elbow, tee, coupling, male-thread of on-the spot making, adapter ...