ISO Certifications Click here for Worthington's IATF transition plan. Steel Processing Facility Certifications Steel Division-ISO-14001-Certificate Steel Division-ISO-45001-Certificate Columbus-IATF-16949-Certificate Steel Division-OHSAS-18001-Certificate Decatur-IATF-16949-Certificate Delta-IATF-16949-Certificate Middletown-IATF-16949-Certificate Monroe-IATF-16949-Certificate Steel Division-ISO-14001-Certificate Steel Division-OHSAS-18001-Certificate Porter-IATF-16949-Certificate Rome-ISO-9001-Certificate Spartan-Steel-Coating-IATF-16949-Certificate WSP-Canton-IATF-16949-Certificate WSP-Jackson-IATF-16949-Certificate WSP-Taylor-IATF-16949-Certificate Pressure Cylinders Facility Certifications Austria – IATF-16949, ISO-9001:2015, ISO 14001:2015, OHSAS-18001:2007, ISO-13485:2012 Columbus, Corporate, Jefferson, and Westerville, Ohio | Maize, Kansas | Chilton, WI | Paducah, KY | Theodore, AL | West Warwick, RI - ISO-9001:2015 | Bremen, Ohio - ISO-9001:2015 Pomona, California - AS9100D, EN9100D, JISQ9100, ISO9001 Poland–IATF-16949-Certificate Portugal – ISO-9001:2008 , ISO-14001:2012 Turkey – ISO-9001:2008
