Industrial paint makes tailored schemes of bridge preservation for the bridge

- Sep 20, 2018 -

Conventional scheme of steel coating plant is as follows:

 

Position

Coating system

Coating species

Dry film thickness/μm

Remark

External steel box

Underside rust

1

Epoxy zinc-rich primer

80

No sealer

2

Inorganic zinc silicate primer

80

Need sealer

3

Thermal spraying metallic zinc or aluminum


Need sealer

Sealer

Epoxy sealer

50


Intermediate paint

Epoxy micaceous iron oxide intermediate

120


Topcoat

Acrylic polyurethane

2×40


Fluorocarbon finish

2×30


Steel box inside

1

Primer

Epoxy zinc-rich primer

50


Topcoat

Colored epoxy mastic coating

100


2

Bottom / top coat

Light Epoxy Mastic Paint

2×75


The above supporting film thickness can be adjusted according to the actual corrosive environment.


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