widely used in refrigerator, freezer ,condenser, evaporator and compressor etc,cost is low ,quality is good and competitve price bundy tube 1.Materials: low carbon steel strip 2.Main use: widely used in wire- tube condenser, evaporators, refrigeration, chiller, heaters, automobile oil conveying and brake system etc 3.outer diameter:3.18mm, 3.6mm,4mm,4.2mm, 4.76mm,6mm, 6.35mm, 8mm etc 4.wall ...