Tube tech industries manufactures copper tubes with various international standards such as astm b-75, astm b-68 and c 11000, etc. These are used in heat exchangers, condensers, evaporators, etc. Brief specifications: dimensional range - outer diameter 4 to 54 mm; wall thickness - 0.30 mm and above; available in length up to 6 mtr; produced in a variety of tempers [viz., hard, half hard, quarter hard and soft annealed] depending upon the specific requirement; and standards other than those mentioned above are available on request. End applications: refrigeration and air conditioning, residential and commercial plumbing, heat exchangers, condensers, evaporators, medical and gas lines, solar applications and other general engineering applications.