Passivation is the treatment of stainless steel with a mild oxidant, (acid solution), intended to remove free iron and other foreign matter from its surface, for the purpose of improving corrosion resistance, by enhancing the formation and structure of the stainless steels naturally forming corrosion-resistant passive layer.

Dalpro has performed passivation treatments with excellent results since 1987. We have the capacity to passivate stainless steel components and structures of all sizes at our facility or at a jobsite anywhere in the North America.

Passivation treatments are in compliance with ASTM specifications or your industry or company specific chemical passivation standard.

Pharmaceutical
Nuclear
Water Treatment
Food and Beverage
Brewery
Biotech
Chemical Production
Pulp and Paper

ASTM A967, “Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts”

ASTM A967 ASTM A380, “Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems”

QQ-P-35C, Federal Specification: “Passivation Treatments for Corrosion-Resistant Steel” (replaced by ASTM A967)

ASTM B600, "Standard Guide for Descaling and Cleaning Titanium and Titanium Alloy Surfaces"

ASTM B614, “Standard Practice for Descaling and Cleaning Zirconium and Zirconium Alloy"