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"Powder Coating the inside of a steel pipeline"



1998

We would appreciate information on what is required as far special tools and process are concerned to alter a standard powder coating operation to one that can do internal coating of 1 - 3 meter pipes, 80 - 600 nb, All steel. We also need to know the specification for preparing a pipe for this internal coat.

Our application is mainly on sewage and water works.

We look forward to your reply,

Chris M [last name deleted for privacy by Editor]
- Kimberley, Northern Cape, South Africa
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1999

Dear Srs. I'm a student of engineering and I need help about internal coating of pipeline for gas transport. I'm looking forward to your answer. Ruth

Ruth Lea G [last name deleted for privacy by Editor]
- UFRJ - Rio de Janeiro- Brasil
^


November 16, 2008

Hi, Chris. Thermoset powders are usually applied by electrostatic spray, thermoplastic powders are usually applied by immersion in a fluidized bed. We would need to know what kind of powder you want to apply, and whether you also coat the outside of the pipe. The pretreatment would probably by phosphatization, either iron phosphate (cheaper) or zinc phosphate (premium). You might also consider a prime coat applied via electrocoating. Good luck.

Hi, Ruth. Hopefully the above answers you as well, but get back to us if it didn't.

Regards,

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