Drawn over mandrel steel tubing is formed from strip and electric resistance welded. The welded tube is subsequently normalized and cold drawn to a smaller dimension and thinner wall. Drawn over mandrel may be machined, formed , welded, carburized and subjected to other fabricating techniques that are ordinarily applied to low carbon steel. Tensile strength 80,000 psi, yield strength 70,000 psi. Elongation 15%. Rockwell B-80.