National Material Processing, LLC 2017-05-24T17:30:00+00:00

National Material Processing, LLC

NATIONAL MATERIAL PROCESSING, LLC AND INTERSTATE STEEL PROCESSING COMPANY – National Material Processing, LLC (NMP) and Interstate Steel Processing (ISP) operate three slitting and two pickling and cut-to-length steel processing facilities strategically nestled within the heart of the U.S. steel industry. Key industries served include the Automotive, Appliance, Agriculture, Construction, Office Furniture and Tube & Pipe. NMP, the first steel processor to introduce a push-pull pickle line in the Indiana Harbor area, specializes in the processing of heavy gauge, hot rolled carbon steel up to .500″ (1.27cm) thick and offers precision slitting, cut-to-length and advanced PRO-ECO, hydrochloric acid pickling services. ISP provides precision slitting of lighter gauge cold rolled and coated steel products from .010 – .135 x 60″ (.025cm – .343cm x 15.24m). It operates a looping pit slitter with shimless tooling and computer assisted setups, and maintains multiple slitting lines within the Illinois/Indiana port area.


  • ISO Certified quality system
  • Heavy gauge and light gauge slitting
  • Pickling and oiling
  • Cognex coil mapping
  • Precision blanking
  • Cut-to-length with corrective leveling
  • Gamma ray gauge
  • Finished goods storage and inventory management services

National Material Processing – Plant 1

429 West 127th Street
Chicago IL 60628-7108
Phone: (773) 468-2800
Fax: (773) 291-1332

National Material Processing – Plant 2

4506 Cline Avenue
P.O. Box 29
East Chicago IN 46312-0029
Phone: (219) 397-5088
Fax: (219) 397-5720

National Material Processing – Plant 3

4502 Cline Avenue
P.O. Box 29
East Chicago IN 46312-0029
Phone: 219-397-5088
Fax: 219-397-5720