air conditioning pipe insulation&a/c fitting 1)Copper tube:OD: ... ) Length:3,4,6,7,10, air conditioning pipe insulation&a/c fitting Copper Tube for Air ConditionerTwin/pair insulated(isolated) copper tube ... /pipe Our product have got the CE ... ,R407C,R410A,R404A,R507C etc.6,PE insulation pipe:I.D.from Φ8 to Φ22.7,PE ...