3" x 3" x 0.120" wall Hot Rolled Steel Square Tube, 20-foot length. A structural grade tube conforming to ASTM A500 Grade B, it has a minimum yield strength of 46,000 PSI and excellent weldability. The hot rolled finish has a dark mill scale. Ideal for constructing trailer frames, building supports, equipment bases, and general fabrication projects requiring strength and durability. In stock for Los Angeles pickup.