ASTM A519 Seamless Mechanical Steel Tubing | Totten …
The ASTM A519 steel tube specification covers both hot-finished and cold-finished mechanical tubing in sizes up to 12-3/4" O.D. A519 is available in round, square, and rectangular profiles, and in special sections. A519 seamless tubing is commonly used in applications requiring machining, heat treating, close tolerances, smooth finishes, and ...