Probably alupex "meerlagenbuis"? Comparing it to copper it seems to be much more affordable per meter. I worked mostly with copper in the past, but did some wor

Probably alupex "meerlagenbuis"? Comparing it to copper it seems to be much more affordable per meter. I worked mostly with copper in the past, but did some work with alupex on my brother's house a couple of years ago. It's much more convenient and affordable than copper!