Store › 1" Round Tube - Mild steel - ERW - 11 gauge Image 1 of 1 1" Round Tube - Mild steel - ERW - 11 gauge from $5.50 OD 1” - ID 3/4” - Round Metal Tube - 11 gauge (1/8” wall thickness) - ERW - ASTM A513 - Mild Steel - Cold Rolled Length: Select Length 12" 24" 36" 48" 60" 72" 84" 96" Quantity: Add To Cart Added! OD 1” - ID 3/4” - Round Metal Tube - 11 gauge (1/8” wall thickness) - ERW - ASTM A513 - Mild Steel - Cold Rolled