air conditioner copper pipe 1)Copper tube:OD:1/4,&3 ... 8,&3/4, (2) Length:3,4,6,7,10, air conditioner copper pipe Twin/pair insulated(isolated) copper tube/pipe ... --1999,JISH3300,ASTM B7435,Thickness of copper tube compatible any gases:R22,R407C,R410A,R404A,R507C etc.6,PE insulation pipe ... low water absorption9,Insulation pipe can be printed with letter. air conditioner copper pipe & Air conditioner parts