Letter 2049

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A local company is classified as a categorical industry due to the phosphating pretreatment process prior to powdercoating. The unit used is an "Industrial Heat Enterprises International" unit which has a three stage process. Cleaning w/phoshoric acid solution, rinse, sealer application.

Is it possible to replace the chemistry with something that will eliminate the classification as a categorical user subject to the metal finishing standards?

Any input would be appreciated.

Randall Greer City of Melbourne - Melbourne, FL

hello!

please tell me about:

• the stability of zinc phosphate at temperature up to 160?
• do zinc phosphate stable in cold forming or annealing process?

thank you.

masood radpey
saadat_arak - tehran,tehran,iran

I'm currently building a steel disel tank. If I apply Mn Phosphate to the tank, will it be reactive towards disel?

Cheng Wee Teck
- Singapore

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