header image

About Us


General Surface Hardening has been based in Chicago’s near West side for over 40 years. We are a family owned, commercial heat treater located at 2108 W. Fulton St., Chicago.

We store paper records and test coupons for a minimum of 5 years at which time paper is incinerated and coupons are recycled, unless otherwise specified by the customer and agreed upon with General Surface Hardening, Inc.

All photos on this site are credited to Robert E. Potter III (REP3.com), who also owns rights to all photos on this site. Rights granted non-exclusive, nontransferable, North American language, PR & Press Use for General Surface Hardening, Inc. in print and web with photo credit and web link.