General Surface Hardening Inc.

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.