We are offering pancake copper tubes. outer diameter:4.76 mm( 3/16") to 22.22 mm( 7/8") thickness : 0.4 mm to 1.20 mm application: pancake coil is mainly used for air conditioning and refrigeration, installation of air conditioner, construction water and gas. standard:astm b280,astm b88,astm b68,astm b75, jis h3300 standard. temper: o60 or o50 package: individually sealed by plastic bag, and packed by carton box of 3-20 rolls