insulation copper pipe used for air conditioner Features:1)Copper pipe: Outer diameter:1/4",1/2",3//8",5/8",3/4", etc.Wall thickness:0.75mm2)Insulation pipe:Wall thickness:8mm,9mm,10mm,etc.3)Length:4m,5m,20m,30m,etc.4)Character:anti-aging,UV resistant,,fire-proof,etc.5)please contact us if you are interseted with our products.