Composite pipe for guiding air, which has silver nano particles with average grain size of ten to eighty nano meter

摘要

Composite pipe has 0.>05 to 0.>1 percent, by weight, of silver nano-particles with an average grain size of 10 to 80 nano meter. The inner pipe (1) made of a first plastic material and a surrounding corrugated pipe (4) made of a second plastic are connected with one another by co-extrusion.