I was in the steel co that I buy alot of my steel for my fabrication work and asked my salesman about the material your looking for . he gave me the names of three co that he said could help you . chicago tube & iron, romeoville ill ph#800-972-0217. marmon-keystone, bolingbrook ill ph#630-739-4525. central steel chi ill ph# 800-621-8510. hope this helps