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Alternative to zinc phosphate coating

Is there an alternative coating to zinc phosphate for mild steel for a high pressure gas container?

Mike Anderson
product designer - Houston, Texas
February 18, 2011

Hi Mike. Do you mean zinc phosphate as a pretreatment before painting or powder coating? There are always alternatives, but all one has to do is look at the flood of garden furniture from China that rusts in a year or year and a half instead of lasting 15 years to see that it can be a huge problem to skimp on pretreatment regardless of motive. For a life-hazard item like a high pressure gas cylinder I wouldn't even think of trying an inferior pretreatment. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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