Bundy Tube Condenser Tube Widely be used in various kinds of condenser and evaporator. Low Carbon Steel Tube Feature: 1) Widely be in used in non-freon refrigerator and other refrigeration equipment .2) Standard: ASTM,DIN,GB etc.3) Outside diameter: Φ3.2mm~Φ10.00mm4) Wall thickness: 0.4mm~1.0mm5) Materials:BHG,SPCC6) Surface Treatment: Bright ,Zinc-coated, Copper-coated, bundy tube