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Lone Star Technologies, Inc. is a management and holding company with six principal subsidiaries, Lone Star Steel Company (Steel), Fintube Technologies, Inc. (Fintube), Bellville Tube Company, L.P. (Bellville), Wheeling Machine Products, Inc. and
E-Z Drill is a Perry, OK-based company in the Manufacturing sector.
Magnat Fairview is a Chicopee, MA-based company in the Manufacturing sector.
BearCat Manufacturing is a Wickenburg, AZ-based company in the Manufacturing sector.
Jet Pipe Industries is a Phoenix, AZ-based company in the Manufacturing sector.