The polymer expansion connectors allow the joining of metal pipes to each other or to other elements (for example plates).

These connectors are inserted inside the pipes, with interference, forcing the connector inside the pipe.

The friction generated between the connector and the pipe wall guarantees a certain tensile strength of the connector.


Expansion connectors are made by adding movement / fixing elements (bolts and screws) inside which, when pulled, expand the connector, compensating for any dimensional defects in the pipes and, at the same time, increasing the friction force between connector and pipe and consequently the resistance to slipping.