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Problem Solving Forum (25)


What is the best method for preparing newly galvanized steel to be overcoated with an epoxy system?


Under what conditions should stainless steel be painted in the oil and gas industry?


How should a contractor respond to a specification requirement that “the nominal dry film thickness of the coating shall be 3 mils?”


How does one apply thin polymer coatings to installed tubes or pipes with diameters of one to three inches and lengths of 20 to 60 feet?


How do you prepare flame-cut edges for application of thermal spray metallic coatings? The problem is that these edges are often harder than the abrasive, so a very low profile is produced, resulting in lower-than-specified adhesion of the thermal spray to the steel.


What are some ways to improve transfer efficiency of airless spray application?


How do you properly coat welded joints?


During newbuilding, do I have to stripe coat edges if I am using an edge retention primer?


What differences in performance and speed do you see among plural-component, conventional airless, and conventional air spraying equipment for field painting structural steel?


How long after blasting can stainless steel be left before painting? If this time is exceeded, what further surface preparation is required?


What are the criteria for selecting coatings for application during extreme (atmospheric) heat?


If a paint data sheet notes a required primer thickness of 125 microns, but the project specification calls for 50 microns, how is this resolved?


How do you adequately assess the adhesion of a newly applied coating?


When the relative humidity in a paint shop exceeds 80%, how can you apply waterborne inorganic zinc so that it cures sufficiently for topcoating in a reasonable time?


When performing maintenance painting of tank coatings, what are the pros and cons of overcoating an existing lining that appears to be in good condition?


What is the best method for preparing newly galvanized steel to be overcoated with an epoxy system?


When applying a 100% solids, fast-curing polyurea coating on concrete, what is the best method for verifying that the proper thickness has been applied?


Are there special primers and surface preparation requirements for painting unpainted aluminum?


How do you successfully apply a chemical-resistant lining to the interior of small-diameter pipes (3 inches or less)?


Lighthouse Painting: I'm with a Massachusetts municipal park department and have been ordered by the city's administration to "get the lighthouse painted." I know there's far more to it than just grabbing a brush and a can of paint. I need to know how to write specifications for a bid for such a project, as well as how to locate companies that might want the job. Since I'm starting from scratch here, any information or references would be greatly appreciated.

Submitted by reader William Woolley


What steps must be taken to mitigate poor adhesion over an existing aged silver aluminum paint? What primer will achieve good adhesion?


What is best way to remedy over-thickness of a topcoat after it has dried and cured?


Under what conditions should stainless steel be painted in the oil and gas industry?


How do you measure wet film thickness on shop-applied organic zinc-rich primers to accurately predict dry film thickness?

Our shop applies a great deal of OZ primer, and we have found that WFT readings with a standard gauge are not accurate predictors of DFT.


How does residue from chemical stripping affect the performance of the replacement coating?


 
 
   

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SAFE Systems, Inc.
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Chicago Corrosion Group

Rust Buddy Solidifier

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No Surface Prep Required.


KTA-Tator, Inc. - Corporate Office
KTA-Tator EH&S Services

• Ambient & Worker Exposure Air Monitoring
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Advanced Recycling Systems
ADVANCED RECYCLING SYSTEMS (ARS)

Recycling Machines, Dust Collectors, Rapid Deployment units are time-tested and approved for the rugged industrial environment. Contact ARS today!
(330)536-8210


US Minerals
US Minerals -
Black Magnum

With nationwide production and distribution capabilities, U.S. Minerals supplies a complete range of coal slag and other abrasives to meet all of your blasting needs.


U.S. Zinc
Logistics. Rely On U.S.

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Julbert, Inc.
Built from the ground up.

Dust Collectors Available!
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Fischer Technology Inc.
DUALSCOPE®FMP100 with DataCenter IP

Transfer customized inspection plans from PC to FMP100 using step-by-step guidance with prompts and pictures throughout the measurement procedure

 
Technology Publishing

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