1.zinc,copper, PVF coated 2.4.76-12.8*0.7 3.single/double wall ... ,petrol pipe, powor steering>ISO 9001, TS16949The low carbon steel brake tube is supplied in single wall and double wall(Bundy Pipe ... :Hydraulic brake line tubing, brake tubing, brake pipes, fuel lines, transmission oil cooler lines, air conditioning tube, power steering, condenser, compressor, evaporator etcOEM is available brake tube ...