(i) Soft copper tubing: Soft copper tubing is used in domestic work and in some commercial refrigeration and air conditioning applications. It is annealed (First heated and then cooled) in order to make it flexible so that it may be easily bent and flared.
(ii) Hard drawn copper tubing: Hard drawn copper tubing is used in commercial refrigeration and air conditioning applications. Hard tubing is used in straight length as these cannot be bent. These are available in 20 ft. lengths.
