Material: Structural Steel, typically ASTM A26 or A992
Shape: Commonly available as square or rectangle tubing
Sizes: Square 2x2 to 6x6
Rectangle: 3x4 inches to 4x6 inches
Weight: Varies by size and thickness (1.5 to 10lbs)
Applications: Used in construction for framing, support columns, and structural load-bearing elements in commercial, industrial, and agricultural buildings.