Gauge Sizes Are the Same for Regular, Thin Wall and Extra Thin Wall Stainless Tubing

Stainless steel tubing is based on selecting the size you require by using the appropriate gauge size. The gauge refers to the outside diameter of the tubing. For this reason, you will find that gauges are similar for regular, thin wall and extra thin wall stainless tubing. The difference between the various types of tubing will have to do with the interior diameter — which increases as wall sizes become thinner.

Need a Larger Interior Opening? Try Using Thin Wall Stainless Tubing

You may discover that you are unable to pass a wire through the interior of regular wall hypodermic tubing. When you encounter this situation, you have a few options available. You could go to a smaller gauge size of tubing, which will have a larger interior opening. Another option is to switch to thin wall stainless tubing in the same gauge size you are already using, as this will also have a larger interior opening.

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