Square Tube All Angle Bar Round Tube Channel Bar Flat Bar Galvanized Round Tube Galvanized Square Tube Gate V-Track Rebar Rectangular Tube Round Bar Strut Channel Square Bar Square Tube 1/2" Square Tube - Mild steel - ERW - 16 gauge from $3.00 5/8" Square Tube - Mild steel - ERW - 16 gauge from $3.00 3/4" x 3/4" Square Tube - Mild steel - ERW - 16 gauge from $3.00 3/4" x 3/4" - Square Tube - 11 gauge - ERW - ASTM A-500 from $4.50 1" x 1" - Square Tube - 16 gauge - ERW - ASTM A-500 from $3.00 1" x 1" - Square Tube - 11 gauge - ERW - ASTM A-500 from $4.50 1-1/4" x 1-1/4" - Square Tube - 16 gauge - ERW - ASTM A-500 from $3.50 1-1/4" x 1-1/4" - Square Tube - 11 gauge - ERW - ASTM A-500 from $11.75 1-1/2" x 1-1/2" - Square Tube - 16 gauge - ERW - ASTM A-500 from $4.50 1-1/2" x 1-1/2" - Square Tube - 11 gauge - ERW - ASTM A-500 from $12.00 1-1/2" x 1-1/2" - Square Tube - 1/4" gauge - ERW - ASTM A-500 from $22.25 1-3/4" x 1-3/4" - Square Tube - 16" gauge - ERW - ASTM A-500 from $5.50 1-3/4" x 1-3/4" - Square Tube - 11" gauge - ERW - ASTM A-500 from $15.00 2" x 2" - Square Tube - 16 gauge - ERW - ASTM A-500 from $6.75 2" x 2" - Square Tube - 14 gauge - ERW - ASTM A-500 from $9.00 2" x 2" - Square Tube - 11 gauge - ERW - ASTM A-500 from $12.25 2" x 2" - Square Tube - 3/16" gauge - ERW - ASTM A-500 from $17.00 2" x 2" - Square Tube - 1/4" gauge - ERW - ASTM A-500 from $18.00 2-1/2" Square Tube - Mild steel - ERW - 16 gauge from $9.50 2-1/2" Square Tube - Mild steel - ERW - 14 gauge from $12.00 2-1/2" Square Tube - Mild steel - ERW - 11 gauge from $15.50 3" Square Tube - Mild steel - ERW - 16 gauge from $10.25 3" Square Tube - Mild steel - ERW - 11 gauge from $25.00 3" Square Tube - Mild steel - ERW - 1/4" gauge from $64.00