Gas cylinders are used for storing fuel such as CNG, hydrogen etc. in automobiles. Based on their performance and type of material used, these cylinders are segmented into five major types, including type I, type II, type III, type IV and type V. Usually, the automotive gas cylinders materials are made up of including steel, aluminum, glass fibre, aramid fibre, carbon fibre and HDPE. Type I cylinder contains all metals like steel or aluminum. Type II cylinders are made from metal liner, partially wrapped with carbon fibre, glass fibre or aramid fibre. In type III cylinder, metal liner is fully wrapped with carbon fibre, glass fibre or aramid fibre and type IV cylinder is composed of plastic liner fully wrapped with carbon fibre or mixed fibre. Type V cylinder exists basically with full composite material construction, however this type of cylinders are yet to be introduced on commercial scale.