We carry Carbon Steel Rectangle Tubing in A500/A513 and 1018.
A500/513 is normally used for structural and construction applications. This economical structural grade tube has a high strength-to-weight ratio, and works particularly well for curved structural applications because it has good ductility, bends well, and is easy to fabricate.
1018 is normally used for machine, automotive, tool, and ornamental applications. 1018 steel is the most commonly available of the cold-rolled steels.