air conditioning pipe insulation&a/c fitting 1)Copper tube:OD:1/4,&3/8,&1/2,&5/8,&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 ... ,JISH3300,ASTM B7435,Thickness of copper tube compatible any gases:R22,R407C,R410A,R404A,R507C etc.6,PE insulation pipe:I.D.from Φ8 ...