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National Material L.P.

National Material Limited Partnership and its affiliates have a long history of quality and service dating back to 1964. Since its founding, National Material L.P. has grown to over 30 business units and is now one of the largest suppliers of steel in America. The National Material group of industrial businesses consists of the Steel Group, Stainless and Alloys Group, Raw Material Trading Group, Aluminum Group, and Related Operations.

Steel Service Centers

National Material Company, LLC

National Material de Mexico

Interstate Steel Company

Steel Processing

National Material Processing, LLC

Interstate Steel Processing

National Galvanizing, L.P.

Waukegan Steel, LLC

National Blanking, LLC

Stainless and Alloys

Combined Metals of Chicago, LLC

Combined Metals of Michigan, LLC

Elgiloy Specialty Metals Division


Taber Extrusions, LLC

Tower Extrusions, LTD.

Astro Shapes, L.L.C.

Ferrous Raw Material

National Material Trading, LLC

Maryland Pig Services, L.P.

Related Operations

Cannonball HNP, LLC

National Coating Technology

Metal Resources International, LLC

Related Operations

Corefficient S.R.L.

Global Tooling Resources

SKD Tooling Company, Ltd.