It has always been a matter of concern how to make the best connections for large sizes of pipes. Historically plumbers were using brass couplers to do the connection.
With recent improvements in the system and utilizing the new powerful Uponor expander tool, plumbers can now enjoy the best connecting system of the world with Superpex pipes. It should be noted that the Uponor fittings are available through NBN Company for Superpex users.
Superpex technical support is always ready to answer any questions about this new advancement and also other related issues.