We can supply bundy tube:single wall and double wall with surface PVF coating,copper and white zinc, color zinc,olive green coating. Features:1.main use: widely sued in auto braking syetem,condenser, airconditioners,refrigerators,evaporators and heater.2.high iensity,small resistance.3.material:low carbon steel tube4.od: 4.76mmx0.7/ 6mmx0.7 /6.35mmx0.75.thickness: 0.5mm/0.7mm/1.0mm6.model: in stright length 6m or others in coil7.mini order qty.: 18t/1x20' or 1t-2t for trial order8.packing: export standed seawothy packing in wooden case.