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Our Company: Steel Tubing Manufacturer & Supplier

Incorporated in 1919 in the state of Indiana, Lock Joint Tube is a privately-owned member of the Lerman Enterprise network (including Steel Warehouse) of related industry companies since 1991. In 2020 LJT acquired Welded Tubes Inc to further support the Tubing Industry.

Lock Joint Tube manufactures mechanical and structural grade steel tubing in five plants located in Indiana, Ohio, Texas, and Tennessee. Selecting hot rolled, cold rolled, aluminized and galvanized steel, Lock Joint Tube services fabricators and distributors, as well as original equipment manufacturers with different sized and shaped steel tubing used in such diverse industries as solar, automotive, office furniture, health care, exercise, and display fixtures to name a few. 

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