Oxygen tanks are containers that store oxygen gas under high pressure. They are commonly used in medical settings to provide supplemental oxygen to patients who have difficulty breathing. These tanks come in various sizes and are equipped with a regulator to control the flow of oxygen. In addition to medical use, oxygen tanks are also utilized in industries such as welding and scuba diving. In welding, oxygen is combined with fuel gases to create a flame for cutting and joining metals. In scuba diving, tanks supply divers with breathable air while underwater, allowing them to explore safely.