... 5mm,0.65mm,0.75mm,0.80mm,0.90mm Split Air conditioner insulated copper tube ,ASTM Twin Type Insulated Copper Tube for ... Air Conditioner specificatondiameter of copper tubediameter of insulation tubewall thickness of insulation ... skin, middle insulation sheet and inner insulation tube.9. Two ends of 3M-10M air condition coating copper tube can join ...