Range of Outer Diameter: 4.00mm-22.22mm Range of Wall Thickness: 0.25mm-2.00mm Features: High cleanliness and super brightness of inner and outer surface, homogeneous and compact structure, high dimensional precision, high heat-exhange efficiency, easy welding, corrosion resistance, easy to use and good formability. Applications: air conditioners, combination type air conditioning units, refrigerators,freezers, solar water heaters, andiron fireplace grates, boilers and so on. W.T. O.D.mm0.25 0.3 0.36 0.41 0.5 0.61 0.71 0.81 1.02 1.22 1.50 2.00 ≥4.00 √ √ √ √ √ √ √ ≥5.00 √ √ √ √ √ √ √ √ √ ≥6.35 √ √ √ √ √ √ √ √ √ ≥8.00 √ √ √ √ √ √ √ √ √ √ √ ≥9.52 √ √ √ √ √ √ √ √ √ √ √ √ ≥12.70 √ √ √ √ √ √ √ √ √ √ ≥14.00 √ √ √ √ √ √ √ √ √ √ ≥15.88 √ √ √ √ √ √ √ √ √ ≥19.05 √ √ √ √ √ √ √ √ 22.22 √ √ √ √ √ √ √