AK Steel (Ohio, USA) has completed its purchase of Alpha Tube Corporation, a leading manufacturer of welded steel tubing located in Walbridge, Ohio. Following the acquisition, the company has been renamed AK Tube LLC. AK Steel purchased the assets of the tube company through an auction conducted in federal bankruptcy court in Wilmington, Delaware. It had been owned by Acme Metals Incorporated, Riverdale, Illinois, which filed for Chapter 11 bankruptcy protection on September 28, 1998. Alpha Tube has continued to manufacture and market its products since the filing. AK Tube LLC produces large diameter, thin-wall mechanical tubing for automotive, construction, heating and cooling, furniture and other markets. The company operates tube mills, slitters and a variety of finishing equipment and produces a wide range of specialty and coated steel tubing products. The company employs about 250 in its facility near Toledo.