Quality Assurance

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Four-D Metal Finishing Inc. has been serving the greater Bay Area since 1973 with a superior quality that has been unmatched. To assure the best quality product, special procedures have been put into place. Our job traveler and tracking software created specifically for our company gives us the ability to properly communicate job instructions to all necessary personel involved in processing steps. Four-D Metal Finishing Inc. uses cutting edge technology for controlling our process baths. To assure our baths are operating properly, we do regular analysis for pH and concentration. These results are recorded and tracked in our statistical process control software. This gives us the ability to keep our baths at desired shop targets and within the ranges provided by our chemical suppliers. 


Quality Highlights

  • In house lab
  • Job tracking software created specifically for our needs
  • Thickness Testing (Ferrous & Non Ferrous)
  • Hull cell testing
  • Conformance to Military Specifications
  • Independant Nadcap 3rd-party lab testing
  • Process control software complete with bath history and statistical control
  • Quality Manual
  • Professional looking COC's available
  • Over 45 years of experience


Many plating shops have come and gone over the years but Four-D has been able to keep going. Its quality has shined when others have failed, its service is like no other, and it reputation is well known. We are here to serve you the highest quality standard possible!