Oxygen is divided into industrial oxygen and medical oxygen. Industrial oxygen is mainly used for metal cutting, and medical oxygen is mainly used for auxiliary treatment. Can cut carbon steel, stainless steel, copper, aluminum and other pipes and profiles, such as: the tube, pipe, oval pipe, rectangular pipe, H-beam, I-beam, angle, channel, etc. The device is widely used in various kind of pipes profile processing field, shipbuilding industry, network structure, steel, marine engineering, oil pipelines and other industries. The nature of oxygen determines the use of oxygen. Oxygen can supply biological respiration. Pure oxygen can be used as medical emergency supplies. Oxygen can also support combustion, and be used for gas welding, gas cutting, rocket propellant, etc. These uses generally take advantage of the property that oxygen easily reacts with other substances to release heat.1、The filling, transportation, use and inspection of oxygen cylinders must comply with relevant regulations; 2、Oxygen cylinders should not be close to the heat source, should not be exposed to sunlight, and the distance from the open flame should generally not be less than 10 meters, and knocking and collision are strictly prohibited; 3、The mouth of the oxygen cylinder is strictly prohibited from being stained with grease. When the valve is frozen, it is strictly prohibited to bake it with fire; 4、It is strictly forbidden to start arc welding on oxygen cylinders; 5、The gas in the oxygen cylinder cannot be completely used up, and the residual pressure of not less than 0.05MPa should be retained; 6、After the oxygen cylinder is inflated, the pressure shall not exceed the nominal working pressure at 15°C; 7、It is forbidden to change the steel seal and color mark of oxygen cylinder without authorization; 8、Oxygen cylinder inspection shall comply with the provisions of the corresponding standards; 9、This gas cylinder cannot be used as an attached bottle pressure vessel on means of transport and machinery and equipment.