Copper tubing for size 7 mm (wall thickness 0.5) to be used with the coil as you want it to be that unfortunately we have used only one type is inner grooved tube.
For copper tube size 7 mm (wall thickness 0.5) to be used with these coils as you want. Unfortunately, we have used only one type is inner grooved tube.
For copper tube size (7 mm wall thickness 0.5) to be used with these coils as you want Unfortunately, we have used only one type is the only inner grooved tube