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Problem Solving Forum (4)


What can be done to prevent rust bleed in crevices when applying a zinc/epoxy/urethane system?


On guardrails on a marine wharf, grating panels consisting of mild steel bars about 1/8-inch by 1-inch on a 2-inch-square grid were painted with a three-coat zinc/epoxy/urethane system. Inspectors are finding numerous pinholes in the finish coat along the inside corners of the grating where the 1-inch-thick bars meet at a 90-degree angle. These pinholes were not noticed in the zinc or epoxy coats, but the final coat's visual inspection is more detailed. What is the likely cause of the pinholing, and what could be done to prevent it on future applications? Also, what should the disposition of the parts with pinholes be, as in, repair, accept as is, reblast and recoat, or an alternative?


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Articles (13)


Elevated Water Tank Coating Warranty Repairs: Coating Condition Evaluations and a Difference of Opinion

from JPCL, February 2017 ; by Cynthia O’Malley, PCS, KTA-Tator, Inc.


Meeting Demands of Gas Exploration: The Evolution of Pipeline Coatings

from JPCL, November 2015 ; by E. Bud Senkowski, P.E., P.C.S., KTA-Tator, Inc.

This article describes the coating materials, surface preparation requirements and ap...


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Video Learning Center (8)


Application: A PaintSquare Video Education Series

The PaintSquare Pro Video Series: A collection of technical presentations hosted by PaintSquare.com in cooperation with SSPC

A collection of archived webinars hosted by PaintSquare.com focused on coatings application.


Coatings Technology: A PaintSquare Video Education Series

The PaintSquare Pro Video Series: A collection of technical presentations hosted by PaintSquare.com in cooperation with SSPC

A collection of archived webinars hosted by PaintSquare.com focused on coatings technology and their applications.


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**Commercial white papers, product videos, and other sponsored documents posted on this site are paid content from third-party companies; inclusion and posting on this site does not imply an endorsement nor recommendation of the content by Technology Publishing/PaintSquare. By signing in and viewing or downloading this paid content, you agree to make your name and full contact information available to the sponsor of the content.

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