This specification covers aluminum and aluminum-alloy formed and
arc-welded round tube, made from formed sheet or plate, butt
welded by gas-tungsten or gas-metal arc-welding methods with or
without the use of filler metal. The tube shall be made by roll
forming (or other suitable forming) sheet or plate into a
circular contour with the longitudinal edges butted together for
welding. The sheet or plate shall be roll-formed so that the
edges are butted together in a helical pattern around the
circumference of the tube. The edges shall be welded together by
a gas-shielded-arc process. Tensile strength, yield strength,
and elongation of the specimens shall be determined by tension
test. Specimens may be subjected to a pressure test and a
radiographic examination. This abstract is a brief summary of
the referenced standard. It is informational only and not an
official part of the standard; the full text of the standard
itself must be referred to for its use and application. ASTM
does not give any warranty express