Industrial Coating Solutions for Municipal
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Municipal Administration
Municipal Administration
The Necessity of Anti-Corrosion for Steel Structures in Municipal Engineering
Corrosion protection remains a critical consideration in municipal engineering construction. Most municipal steel structures are exposed to harsh natural environments and chemical/physical erosive conditions. Inadequate anti-corrosion measures lead to significantly reduced service life and may even cause structural failures, casualties, substantial economic losses, and negative social impacts. While contributing factors include substandard materials, poor fabrication, natural disasters, and traffic accidents, metal corrosion stands as the primary cause of deterioration.
Coating Reference System for Steel Structures in Municipal Engineering >>
The steel structures in municipal engineering projects are typically exposed to C2 and C3 corrosivity categories (as per ISO 12944). While these environments are relatively moderate in terms of corrosion severity, they demand higher aesthetic and decorative performance requirements.
To address these specific needs, Zindn recommends the following coating system solutions:
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Examples Of Painted Parts
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Protection Plan
|
Road Number
|
Thickness(μm)
|
|---|---|---|---|
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Municipal steel structure surface
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Surface pretreatment
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Sandblasting and rust removal reach Sa2.5 level
|
|
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Cold galvanizing compound primer
|
1
|
60
|
|
|
Cold galvanizing compound sealant
|
2
|
100
|
|
|
Polyurethane finish
|
2
|
80
|
|
|
Outer surface of buried pipeline
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Surface pretreatment
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Spray Sand rust removal reaches Sa2.5 level
|
|
|
Epoxy coal tar pitch primer
|
1
|
150
|
|
|
Epoxy coal tar pitch paint
|
1
|
150
|
|
Transportation Steel Structure Coating Reference System >>
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Examples Of Painted Parts
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Protection Plan
|
Road Number
|
Thickness(μm)
|
|---|---|---|---|
|
Indoor steel structure surface of stadium
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Surface pretreatment
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Sa2.5，Rz40-70μm
|
|
|
ZD96-1 Cold galvanizing compound primer |
1
|
85
|
|
|
ZH53-6 Cold galvanizing compound sealant |
2
|
100
|
|
|
Fire-retardant coating |
2
|
According to the fire resistance class |
|
|
ZF95-51Modified fluorocarbon topcoat
|
2
|
90
|
|
|
Airport indoor steel structure
|
Surface pretreatment
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Pretreatment SA2.5
|
|
|
Inorganic zinc-rich
|
1
|
80μm
|
|
|
Epoxy seal
|
1
|
30μm
|
|
|
Epoxy mica
|
1
|
100μm
|
|
|
Polyurethane finish
|
1
|
2*40μm
|
|
|
Airport outdoor steel structure
|
Surface pretreatment
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Pretreatment SA3.0
|
|
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Arc spraying zinc aluminum alloy
|
|
150μm
|
|
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Epoxy seal
|
|
30μm
|
|
|
Epoxy mica
|
|
100μm
|
|
|
Polysiloxane |
|
2*30 Micron
|
|
Stadium Steel Structure Coating Reference System >>
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Examples Of Painted Parts
|
Protection Plan
|
Road Number
|
Thickness
|
|---|---|---|---|
|
Elevated station canopy
|
Secondary surface sandblasting
|
Sa2.5 level，Rz55-80μm
|
|
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Water-based cold galvanizing compound |
2
|
≥2×35mm
|
|
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Cold galvanizing compound sealant |
2
|
≥2×40mm
|
|
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Polyurethane finish |
1
|
≥1×40mm |
|
|
1 coat of polyurethane topcoat (on-site painting)
|
1
|
≥1×40mm
|
|
|
Use library
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Secondary surface sandblasting
|
Sa2.5 level，Rz55-80μm
|
|
|
Water-based cold galvanizing compound
|
2
|
≥2×35mm
|
|
|
Cold galvanizing compound sealant
|
2
|
≥2×40mm
|
|
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Fire-retardant coating
|
|||
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Remarks: Fireproof coatings need to meet the corresponding fire resistance limit requirements of the building requirements, and the fireproof and anticorrosive coatings should be compatible, and no chemical reaction will occur. |
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Municipal Steel Structure Coating Reference System >>
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Example Of A Case For Repairing Painted Parts
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Protection Plan
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Road Number
|
Thickness(μm)
|
|---|---|---|---|
|
Railing steel structure repair
|
Secondary surface sandblasting
|
Sa2.5 level，Rz55-80μm
|
|
|
Epoxy glass flake anticorrosive paint primer
|
1
|
80
|
|
|
Chlorinated Rubber Finish |
1
|
80
|
|
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