Air Conditioner tube 1)Copper tube:OD:1/4,&3/8,& ... 1/2,&5/8,&3/4, (2) Length:3,4,6,7,1 Air Conditioner tube ... (1)Copper tube:OD:1/4,&3/8,&1/2,& ... corrosion of solder joints, leading to leakage of tube wear eye.Third, high cleanliness: as between ... pipe insulation, and to improve the air conditioner's energy efficiency, should further improve the ...