Store › 5/8" Round Metal Tube - Mild Steel - 16 gauge - ERW Image 1 of 1 5/8" Round Metal Tube - Mild Steel - 16 gauge - ERW from $3.00 OD 5/8 - ID 1/2” - Square Metal Tube - 16 gauge (1/16” wall thickness) - ERW - ASTM A513 - Mild Steel - Cold Rolled Size: Select Size 12" inch long (1-ft) 24" inch long (2-ft) 36" inch long (3-ft) 48" inch long (4-ft) 60" inch long (5-ft) 72" inch long (6-ft) 84" inch long (7-ft) 96" inch long (8-ft) Quantity: Add To Cart Added! OD 5/8 - ID 1/2” - Square Metal Tube - 16 gauge (1/16” wall thickness) - ERW - ASTM A513 - Mild Steel - Cold Rolled