... TS16949:2009, ISO9001:2000, DOT certificate double braided nylon tube double braided nylon tube: 1).Material: PA, Nylon ,Polyamide2).Size ... widely use for automobiles,machines.etc.7). Single tube,double tube------------------------------------------------NicholeMob.: +86- 159 2581 6050Tel: +86 ... , air brake coil with double layerDouble tubing--Double layer nylon tube,double braided tube,reinforced tube