Painting specification for wastewater service

Question

Painting specification for wastewater service

jor1492 (Mechanical)

(OP)

12 Jan 18 20:06

Hello All,

I am new in the coating area. I have this question, what kind of painting procedure could be for a carbon steel shaft that will be working in full contact with wastewater?

I was thinking in a surface treatment sspc-sp10 and then 3 layers of high build epoxy coats (min 6 mils each one).

Thanks by advance

nackra (Civil/Environmental) · Answer 1 · 2018-01-13 00:20:36

you might consider primer + HB epoxy + seal/finish coat:

http://www.tnemec.com/company/resource/document/?n...

jor1492 (Mechanical) · Answer 2 · 2018-01-13 16:50:28

thanks nackra, But if I use HB epoxy for primer, undercoat and finish ? each one with 6 mils. What do you think?

mk3223 (Mechanical) · Answer 3 · 2018-01-14 21:30:19

IMO, to save your time, take a sample of the waster water and contact a vendor for recommendation of the actual coating thickness as required.

EdStainless (Materials) · Answer 4 · 2018-01-15 01:08:36

The primers are designed to bond to the metal, the build is your main protection, and the sealer extends life.
Most modern systems are designed this way.

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P.E. Metallurgy, Plymouth Tube

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Painting specification for wastewater service