B-Type (10 Litre ) Aluminium Oxygen Cylinder 10 Ltr. Made of aluminium , generally upto 50% lighter than other oxygen cylinders .aluminium material cylinders, which makes the cylinders portable, lightweight and easy to handle in emergency situations. The Oxygen cylinders and concentrators assist the patient's breathing. An oxygen cylinder is a storage container which supplies oxygen to a patient through a surgical mask/nasal cannula.at the time of emergency . Aluminium cylinders are easy to carry and use while trevels..