National Material Company, LLC
National Material de Mexico
Interstate Steel Company
National Material Processing, LLC
Interstate Steel Processing
National Galvanizing, L.P.
National Blanking
Waukegan Steel, LLC
Combined Metals of Chicago, LLC
Combined Metals of Michigan, LLC
Elgiloy Specialty Metals Division
Taber Extrusions, LLC
Tower Extrusions, LTD.
Astro Shapes, LLC
National Material Trading, LLC
Maryland Pig Services, L.P.
Global Tooling Resources
National Coating Technology
Metal Resources International, LLC
Corefficient S.R.L.
SKD Tooling Company, Ltd.
