... ASTM B280,JIS H3300 C1220T,EN12735-1, AS 15715,Thickness of copper tube compatible any gases:R22,R407C,R410A,R404A ... ,R507C etc.6,PE insulation pipe:I.D.from ... Φ8 to Φ22.7,PE insulation pipe:thickness from 8mm to 10mm.8,Character:Anti- ... UV,good heat resistance,low water absorption9,Insulation pipe can be printed with letter. Pair/single insulated ...