FIELD: pipes.
SUBSTANCE: connecting pipe is made of at least tree layers. The inner and intermediate layers are made of a polymeric material. The amorphous zones of partially crystal polymeric material of the inner layer which is in a contact with the fluid to be transported is provided with anticorrosion admixtures, which, in particular, protect the connecting pipe against oxidizing and reducing fluids. The amorphous zones of the polymeric material of the intermediate layer is provided with fillers and/or admixtures for decreasing diffusion of admixtures from the inner layer to the outer layer of the pipe.
EFFECT: enhanced strength.
11 cl, 2 dwg
