METHOD FOR PIPE SEALING Russian patent published in 2013 - IPC F16L55/115 B21C37/06 

FIELD: construction.

SUBSTANCE: wire conductor is inserted into a pipe with a cleaning rod fixed to it. Then onto one end of the pipe, in which the cleaning rod is located, a plug is welded, comprising a threaded bushing, where a nozzle is screwed in to purge car brakes with a hose put on it, connected to a cylinder with inert gas, for instance, argon. Then after start of inert gas supply and with the help of the wire conductor, the cleaning rod is gradually extended from the pipe until its total withdrawal. Then, without pressure collapse, the second plug is welded onto the second end of the pipe, after that the pipe is sealed through nozzle rotation. If it is necessary to seal the pipe with thread at the ends, the end plugs are made in the form of a solid reservoir, on the inner side surface of which there is thread arranged, with size identical to size on the sealed pipe. At the same time to seal the connection of the sealed pipe with the end plug they use metal gaskets from plastic materials, in particular, copper, steel 10, etc.

EFFECT: realisation of a pipe sealing process, provision of required quality of inner surface of a manufactured tap.

4 cl, 2 dwg