... strcture and brightness of inner and outer surface 1)Range of Outer Diameter:4.00mm-22.22mm2)Range of Wall Thickness:0 ... .25mm-2.00mm3)Features:High cleanliness and super brightness of inner and outer surface, homogeneous and compact structure, ... to use and good formability. 4)Applications:air conditioners, combination type air conditioning units, refrigerators,freezers, solar water heaters, andiron ...