Bimetallic Tubes and Cracks Stopping

Bimetallic Tubes like Crack Stopping

One of the most important secrets of the bimetallic tubes is that is very nice and secure prevention of the total breakage of the tubes or of the pipes due to the cracks, since, given the no-homogeneity of the 2 materials.

A crack that was to start would not break out of the tube but would stop in the interface between the 2 pipes avoiding disastrous pressure losses.

It's easy to image but this is a characteristic only for the bimetallic tubes made by hydroforming like our and not made with extrusion process.

During the extrusion process the molecules of the 2 materials are mixed and create a perfectly continuity and the creaks can run like in sole material.

In the case of our technology the expansion of the inner tube against the outer is made by the high pressure of room temperature and this hydroforming allows the perfect bonding without guaranteeing the thermal exchange avoiding, at the same time, the propagation of eventually cracks.

M. Fortunati