Epoxy over Hot Dipped Galvanized
Epoxy over Hot Dipped Galvanized
(OP)
I know there is a problem with zinc saponification with some coatings over a pre-galvanised material.
Is there a similar problem with the application of epoxies over zinc coating? I will check with specific coating suppliers.
Dik
Is there a similar problem with the application of epoxies over zinc coating? I will check with specific coating suppliers.
Dik





RE: Epoxy over Hot Dipped Galvanized
RE: Epoxy over Hot Dipped Galvanized
...it's part of a client coating spec and I want to vet it, personally before I accept this.
Dik
RE: Epoxy over Hot Dipped Galvanized
You are right to be concerned.
RE: Epoxy over Hot Dipped Galvanized
Steve Jones
Materials & Corrosion Engineer
http://www.oilandgaspeople.com/cv/11499664
http://www.linkedin.com/pub/8/83b/b04
RE: Epoxy over Hot Dipped Galvanized
Thanks Hokie... not over yet, your comment is exactly the reason for my concern.
Dik
RE: Epoxy over Hot Dipped Galvanized
thanks, Dik
4.4.4.1 Epoxy Systems. Two coats of epoxy will provide longterm protection to galvanizing in interior service, as will one coat of epoxy and one coat of aliphatic urethane to galvanizing in exterior service.
Epoxy Coating System for Exterior Galvanizing Surface
Preparation Primer Topcoat SSPC SP 1 one coat MIL-P-24441 one coat MIL-C-85285 Formula 150 Type II
3 mils dft 2 mils dft
Epoxy Coating System for Interior Galvanizing Surface
Preparation Primer Topcoat SSPC SP 1 one coat MIL-P-24441 one coat MIL-P-24441 Formula 150 of desired color 3 mils dft 3 mils dft
Thank you, gentlemen...