insulation tube of air conditioner&air conditioner pipe 1)Copper tube:OD:1/4,&3/8,&1/2,&5/8,&3/ ... 4, (2) Length:3,4,6,7,10m insulation tube of air conditioner&air conditioner pipeTwin/pair insulated(isolated) copper ... ,JISH3300,ASTM B7435,Thickness of copper tube compatible any gases:R22,R407C,R410A,R404A,R507C etc.6,PE insulation pipe:I.D.from ...