... ) Length:3,4,6,7,1 Air Conditioner tube(1)Copper tube:OD:1/4,&3/8,&1/2 ... aluminum connecting pipe in air conditioning manufacturing, air conditioning maintenance is the application.A long life: the outer ... corrosion of solder joints, leading to leakage of tube wear eye.Third, high cleanliness: as between ... than brass soft, copper-aluminum connecting pipe copper tube design is 1.5 times the wall thickness ...