Method of applying a phenolic resin corrosion protective coating to a component used in a fluid conveyance system
OwnerBradford Corbett, Mark Weih +1inventors
InventorsBradford Corbett, Mark Weih, Jorge Arias
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Abstract
A method is shown for corrosion protecting a ductile iron pipe component which forms a part of a water or sewer line used in the waterworks industry as a part of a fluid conveyance system. A surface of the pipe component is coated with a corrosion resistant coating which is an aqueous phenolic resin dispersion. The pipe component is dipped in a bath of the corrosion resistant coating and then baked, dried and cooled. An electrostatic powder coating is applied over the base phenolic resin coating for added corrosion protection and durability.
Claims11
An asphalt-free method of corrosion protecting a ductile iron pipe component which forms a part of a water or sewer line used in the waterworks industry as a part of a fluid conveyance system, the method comprising the steps of:
- coating the ductile iron pipe component with a corrosion resistant coating which comprises an aqueous phenolic resin dispersion;
- and
- wherein the ductile iron pipe component has an exterior surface and an interior surface and wherein the component is dipped into a treatment solution which includes the aqueous phenolic resin dispersion, thereby coating both the interior and exterior surfaces of the component, the corrosion resistant coating being less than 20 mils in thickness.
An asphalt-free method of corrosion protecting a ferrous metal pipe component which forms a part of a water or sewer line used in the waterworks industry as a part of a fluid conveyance system, the method comprising the steps of:
- coating the ferrous metal pipe component with a corrosion resistant coating which comprises an aqueous phenolic resin dispersion, the coating being applied by dipping the ferrous metal pipe component into a supply of the aqueous phenolic resin dispersion, followed by baking and drying, the corrosion resistant coating being less than 20 mils in thickness;
- and
- thereafter, applying an electrostatic spray powder coating onto at least selected areas of the previously coated ferrous metal pipe component.
Dependencies are inferred from the claim text.