Metal -plastic pipes are more reliable due to their design. The wall of such a pipe resembles a layer pie — between the two layers of plastic is a layer of aluminum. Such a pipe practically does not change its geometric shape when heated. This is her advantage over the plastic pipe. However, metal -plastic pipes vary in quality. In high -quality metal -plastic pipes, the expansion and compression of plastic and aluminum are thoroughly balanced, which makes the compounds more reliable and durable. Metal -plastic pipes are usually more expensive than plastic, although the scatter in prices is large.
In any case, consultation of a specialist will not hurt.