Heating tube for e.g. floor heating system, has channels extending in longitudinal direction of tube extending to depth upto proximity of aluminum layer, where lengths of channel bases correspond to lengths of elevation between channels

摘要

The tube has an inner base pipe (1) made of plastic. An aluminum layer (2) is placed under an intermediate layer. An outer layer made of plastic is attached to adhesion promoters. The outer layer (3) has channels (4), which extend in longitudinal direction of the tube and extend to depth upto proximity of the aluminum layer. Lengths of channel bases (5) correspond to lengths of an elevation lying between the channels. The channels are offset from each other around 30 degrees.