METHOD OF CONNECTION OF PLASTIC REINFORCED PIPES Russian patent published in 2004 - IPC

FIELD: construction of pipelines out of plastic pipes.

SUBSTANCE: the invention presents a method of connection of plastic reinforced pipes and is dealt with the areas of construction of pipelines out of plastic for example polyethylene pipes reinforced with high-strength fibers. The method provides for a threading on the ends of connecting pipes and a metal coupling screwing on the ends of the connected pipes. At that first they made threading on one end of one of the connected pipes and the coupling is completely screwed on this threaded end of the pipe. After that the butts of the connected pipes are joined and butt-welded. Then on the end of the second pipe they make threading being a prolongation of the threading made on the end of the first pipe and screw on it the metal coupling at the expense of the coupling partial unscrewing from the end of the first pipe. The invention ensures tightness of the joint of the pipes and reliable protection of the reinforcing layer of pipes in the zone of their joint.

EFFECT: the invention ensures tightness of the joint of the pipes and reliable protection of the reinforcing layer of the pipes in the zone of their joint.