One of the reasons why stainless steel tubing is used in so many different ways is because it can be custom-manufactured in an extensive range of sizes and configurations. While some manufacturers specialize in a certain size, others like Atlantic Stainless have the facilities and technology to fabricate it in tiny sizes for use as hypodermic tubing, all the way up to very large sizes for use as pipes and industrial tubes. It's incredible to imagine that the same product can serve so many potential purposes when its size is changed! The measurements that come into play when choosing the ideal size of tubing for any given application are wall thickness, inner diameter, and outer diameter. Once those are chosen then the tube can be welded and drawn or cut and formed in any length!