Gas cylinders are containers designed to hold gases under pressure. They are commonly made from steel or aluminum and come in various sizes, depending on their intended use. Gas cylinders are used in many applications, including welding, medical treatments, and industrial processes. Each cylinder is equipped with a valve that controls the release of gas. Safety is crucial when handling gas cylinders. They must be stored upright and secured to prevent tipping. Additionally, proper labeling is essential to identify the type of gas inside, such as oxygen, argon, or carbon dioxide. Regular inspections ensure that the cylinders remain safe for use.