Pancake Coil, which is ACR copper tube used for the working place requiring the short length usually less than 30 meters, is light, easy to move and simple to handle.
Copper tubes for HVAC (Heating,Air-conditioner, Refrigerator), streight copper tubes for plumbing and others (Cu-Nickel) tubes are available.
KS D5301 / JIS H3300 / ASTM...