"This SAE Aerospace Recommended Practice (ARP) is intended as a guide for choosing a minimum wall thickness if tubing@ based only in pressure@ for use with welded tube fitting ends that have a ""tube wall code"" covering a range of tube wall thickness. These wall thicknesses are based on burst pressure with an arbitrary additional safety factor. If the weld fitting user has already established the required minimum wall thickness for given performance conditions@ this guide does not apply."
SAE ARP4698-1995 history
2023SAE ARP4698A-2023 Guide for Choosing a Minimum Wall Thickness of Tubing for Use with Weld Fittings Coded for a Range of Wall Sizes
2013SAE ARP4698-2013 Guide for Choosing a Minimum Wall Thickness of Tubing for Use With Weld Fittings Coded for a Range of Wall Sizes
1995SAE ARP4698-1995 Guide for Choosing a Minimum Wall Thickness of Tubing for Use With Weld Fittings Coded for a Range of Wall Sizes