The prime purpose of this article is to discuss about use of compressed gas cylinders. Compressed gas cylinders are extremely useful for factory or industry. It helps us many ways. Compressed gas cylinders are found in virtually all capacity. They are secure and effortless to effort with, however they are too potentially hazardous. The compression itself and the gas within together pose dangers that can be severe hazards. Several of the numerous uses of compressed gas cylinders are to give fuel for welding, supply breathable air, and to carry out lab experiments.