Call Today: (877) 471-0840 International: (248) 437-2497 Home Services Capabilities Quality Control Request A Quote Careers Terms Contact Us Quality Control Sun Steel Treating Inc. has three (3) full time lab technicians working with state of the art equipment to design a process specifically to meet any customer's unique needs. ISO 9001:2015 Scope of Registration: Specialized steel treating services including salt bath hardening, ion processing including ionitriding, vacuum heat treatment, and steam treating. Markets include the metal forming, plastics, forging, die-casting and machine tool industries throughout the United States and Canada. Click here to view ISO 9001:2015 certificate. Sun Steel Treating, Inc. 550 N. Mill Street, Box 759 South Lyon, MI 48178 US Find us on Google Maps Phone: (877) 471-0840 Fax: (248) 437-3140 International: (248) 437-2497 Quality Control & Certifications © 2021 Sun Steel Treating, Inc. & Online Connexions. All rights Reserved. Home Terms and Conditions Contact