| abstract |
The present invention includes an outer layer made of a molding composition comprising at least 40% by weight of polyamide having monomeric units of at least 8 carbon atoms, and a layer made of a polypropylene molding composition,n n n (a) the outer diameter is in the range of 6 to 20 mm,n n n (b) the wall thickness is in the range of 1.0 to 2.0 mm,n n n (c) a pipe having a polypropylene layer thickness of 25 to 75% of the wall thickness. Such pipes can be manufactured at low cost and are used as air-break lines with high burst strength and good low temperature impact resistance.n n n Polyamide, Polypropylene, Pipe, Air-Brake Line |