Use of inert and other active gases is common in various types of welding processes and welders are often confused about whether to buy a disposable gas cylinder or to hire a big cylinder from the supplier. There are so any reasons that will encourage a welder to buy a disposable gas cylinder instead of hiring a big one. Disposable gas cylinders or bottles are highly useful for DIY stuff and not so often uses. Welders who do not take welding jobs on the everyday basis should prefer disposable gas bottles as they come with so many advantages.
Professionals and hobby welders are realizing that hiring gas cylinders from suppliers is not their only option as they can also buy disposable gas bottles anytime they want, depending on the purpose. Some benefits of disposable gas bottles are explained here.
A standard gas bottle costs around $69 and has a capacity of 2.2l and it is enough for several hours of welding. For some welders, this amount is enough even for six months. It clearly shows that there is no need of hiring gas cylinders.