... and refrigeration. Also used for water pipes. Pancake coil copper tubes 1) Used for air-conditioning system and ring system and ... , ASTM B753) Temper: soft, half hard, hard4) Types: copper capillary tubes, strbes, straight tubes, copper tube in coils, pancake coils, inner grooved ... tubes etc.5) Payment: T/T, L/C.6) Package: inner ...