Refrigeration Bundy Rohr

The low carbon steel brake tube is supplied in single wall and double wall(Bundy Pipe). The products conform to ASTM A-254-91, A-512-91A and ASTM A214 and A513 in material and quality. Commonly sizes we supply to the client include 4.76mm×0.7 mm,6.35 mm×0.7 mm and 8 mm×0.7 mm. Plating:Yellow Zinc,White Zinc,Copper and PVE. Package:in coils/cut-to-length Application:Hydraulic brake line tubing, brake tubing, brake pipes, fuel lines, transmission oil cooler lines, air conditioning tube, power steering, condenser, compressor, evaporator etc. Test ItemTechnical StandardTest ResultOuter DiaΦ4.76±0.1mm + PVFΦ4.79mmMechanical PropertyTensile Strength≥290Mpa296MpaYield Strength≥180Mpa190MpaElongation≥20%30%Wall Thickness0.70±0.1mm0.71mmFlaring TestFlaring≥25%30%Bending TestBend 180°in a Radius Three Times of the Pipe DiameterNo Crafk or Peeling After FlaringFlattening TestNo Crack After FlatteningNo CrackPressure TestNo Leakage when Charged with 34.3Mpa Nitrogen Gas for 1minNo LeakagePlating Thickness>15μm22μmSalt Spray Test>2500 hours3000 hours