... /single insulated copper tube/pipe Our product have got the CE certificate and pass the Rohs test! 1,Copper tube:O.D. ... 8''&3/4'',1/2''&3/4''2,Copper tube:thickness from 0.5mm to 1.5mm.3, ... ,Thickness of copper tube compatible any gases:R22,R407C,R410A,R404A,R507C etc.6,PE insulation pipe:I.D. ... heat resistance,low water absorption9,Insulation pipe can be printed with letter. Insulated copper tube/pipe