Detailed Product Description 1,Copper tube:O.D.1/4''&3/8'',1/4''&1/2'',1/4''&5/8'',3/8''&5/8'',3/8''&3/4'',1/2''&3/4''2,Copper tube:thickness from 0.5mm to 1.5mm.3,Length: 3 meters to 30 meters4,Standard complied: GB/17791--1999,JISH3300,ASTM B7435,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 ...