Longhorn Tube American Owned. American Made. EVEN MORE SO TODAY THAN EVER BEFORE! You can be confident in our commitment to the American steel industry and to providing our customers with tubing made from raw materials that are melted and manufactured right here in the U.S.A. It's a  choice we make every day. Longhorn Tube Hollow Structural Sections. Square and Rectangular Mechanical. Custom Welded Roll Formed Shapes.             True-Galv™ Now may be the best time to check out our new expanded selection of sizes available from Longhorn Tube on ASTM A787-AWG True-Galv™ galvanized tubing.  We have added many new sizes! Do you use galvanized square and rectangular mechanical tubing?  Is it REALLY galvanized?  We manufacture square and rectangular tubing to ASTM A787 as welded galvanized tubing.  We then recoat the weld seam via a proprietary thermal application of zinc to the seam and HAZ.  Need a specific coating weight?  Need the coating weight INSIDE and OUTSIDE the tubing?  We can provide G30 to G90 coatings on both the inside and outside.  Additional coating weights can be provided on special order.  Can your vendor do that?  Ask them for a coating weight on the inside?  Some will say it is an equivalent or point you to some tests.  Very few can adhere to ASTM specifications on coating weight.  What's the difference?  Download our  brochure and find out.  For True-Galv™ hot dipped galvanized tubing click the link below.   If you want the real deal in galvanized tubing specify True-Galv™.  You won't be disappointed.  Contact any of our sales representatives today for more information.