... .GB/T 19001-2008 4.AAA Grade Credit Unit Description LWC Coil(Standard according to ASTMB360) O.D.(Inch/mm) I ... production runs for industrial applications and available in ultrathin walls, LWC coil is mainly used for Air-Conditioning Refrigeration and Heat ... , such as Pancake Coil, Straight Copper Pipe, Aluminum Tube Coil LWC Coil Copper Tube