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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
ASAP Industries is a Houma, LA-based company in the Manufacturing sector.
Ingersoll Production Systems is a Rockford, IL-based company in the Manufacturing sector.
CDS Custom Downtream Systems is a Lachine, QC-based company in the Manufacturing sector.
AC Incorporated is a Huntsville, AL-based company in the Manufacturing sector.