Form This specification covers an aluminum alloy in the form of drawn@ round seamless tubing with wall thicknesses of 0.010 to 0.450 inch (0.25 to 11.43 mm)@ inclusive. Application This tubing has been used typically for parts@ such as brackets@ conduits@ and low-pressure fluid lines@ requiring good weldability@ moderate strength@ and good resistance to corrosion@ but usage is not limited to such applications.