Doerken Engineered Coatings

Modern Plating Coatings & Finishes is licensed to apply the full range of Doerken engineered finishes. All Doerken coatings are environmentally-friendly and designed to provide optimum performance in corrosion protection, consistent torque-tension values and resistance to chemical attack. Doerken finishes are hex-chrome-free.

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Delta-Protekt®

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The doerken Delta-Protekt series finishes include an inorganic basecoat and topcoat system. This is the optimal system for fasteners (M4 through M18) and other small metal components. Corrosion resistance of over 1,000 hours in neutral salt spray can be achieved

Delta-Coll®

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The Doerken Delta-Coll series finishes include an inorganic topcoat system over an electroplated basecoat. This system offers multifunctional topcoats which permits it to be used in a wide range of applications. Corrosion resistance of over 720 hours in neutral salt spray can be achieved

All Doerken finishes are engineered to provide:

  • Thin, uniform coating thickness
  • High corrosion and cathodic protection
  • High resistance to chemical attacks
  • Good temperature resistance
  • No hydrogen embrittlement
  • Consistent torque and tension performance
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Featured Finishes Gallery

Acid Zinc - Black Trivalent Chromate
Alkaline Zinc - Black Trivalent Chromate
Alkaline Zinc - Clear Chromate
Alkaline Zinc - Clear Chromate
Alkaline Zinc - Clear Chromate
Geomet 321
Sharperize Zinc Nickel Black
Tin Zinc Clear
Zinc Plus3 ZN Clear
ZincKlad 250
ZincKlad 500 Zinc Iron Black
ZincKlad 500 Zinc Iron Clear
ZinKlad 1000 Zinc Nickel Black
ZinKlad 1000 Zinc Nickel Clear Nut


ISO 9001NVLAP Aqua Certification