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Municipal industry solutions
The necessity of steel structure anticorrosion in municipal engineering
Anti-corrosion durability is always an important issue in municipal engineering construction.
Most municipal engineering projects are exposed to various natural environments or environments with chemical and physical erosion. Improper anti-corrosion treatments lead to a reduction in service life, and even cause overall damage, casualties, economic losses and social impacts. They are mainly composed of materials and It is caused by poor production, natural disasters, various traffic accidents, and metal corrosion, and metal corrosion is the main reason.
Municipal Engineering Steel Structure Coating Reference System＞＞
The steel structure of municipal engineering is generally in the corrosive environment of C2 and C3. The corrosive environment is relatively not bad, but it has higher requirements for appearance and decoration performance.
In view of the characteristics of municipal engineering, Zinc Shield recommends the following supporting system schemes:
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Examples of painted parts
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Protection plan
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Road number
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thickness(μm)
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|---|---|---|---|
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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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|
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Cold spray zinc primer
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1
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60
|
|
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Cold spray zinc sealant
|
2
|
100
|
|
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Polyurethane finish
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2
|
80
|
|
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Outer surface of buried pipeline
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Surface pretreatment
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Spray Sand rust removal reaches Sa2.5 level
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|
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Epoxy coal tar pitch primer
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1
|
150
|
|
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Epoxy coal tar pitch paint
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1
|
150
|
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Coating reference system for stadium steel structure＞＞
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Examples of painted parts
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Protection plan
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Road number
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thickness(μm)
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|---|---|---|---|
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Indoor steel structure surface of stadium
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Surface pretreatment
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Sa2.5，Rz40-70μm
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|
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ZD96-1Cold spray zinc primer |
1
|
85
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|
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ZH53-6 Cold spray zinc sealant |
2
|
100
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Fire-retardant coating |
2
|
According to the fire resistance class |
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|
ZF95-51Modified fluorocarbon topcoat
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2
|
90
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|
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Airport indoor steel structure
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Surface pretreatment
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Pretreatment SA2.5
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Inorganic zinc-rich
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1
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80μm
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|
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Epoxy seal
|
1
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30μm
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Epoxy mica
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1
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100μm
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Polyurethane finish
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1
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2*40μm
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Airport outdoor steel structure
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Surface pretreatment
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Pretreatment SA3.0
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|
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Arc spraying zinc aluminum alloy
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150μm
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Epoxy seal
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30μm
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|
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Epoxy mica
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100μm
|
|
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Polysiloxane |
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2*30 Micron
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Coating reference system for traffic steel structure＞＞
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Examples of painted parts
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Protection plan
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Road number
|
thickness
|
|---|---|---|---|
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Elevated station canopy
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Secondary surface sandblasting
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Sa2.5 level，Rz55-80μm
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Water-based cold spray zinc |
2
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≥2×35mm
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Cold spray zinc sealant |
2
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≥2×40mm
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Polyurethane finish |
1
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≥1×40mm |
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1 coat of polyurethane topcoat (on-site painting)
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1
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≥1×40mm
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Use library
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Secondary surface sandblasting
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Sa2.5 level，Rz55-80μm
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Water-based cold spray zinc
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2
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≥2×35mm
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|
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Cold spray zinc sealant
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2
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≥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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Reference System for Steel Structure Painting in Municipal Industry＞＞
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Example of a case for repairing painted parts
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Protection plan
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Road number
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thickness(μm)
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|---|---|---|---|
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Railing steel structure repair
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Secondary surface sandblasting
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Sa2.5 level，Rz55-80μm
|
|
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Epoxy glass flake anticorrosive paint primer
|
1
|
80
|
|
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Chlorinated Rubber Finish |
1
|
80
|
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Municipal industry painting case
Other Industry Solutions
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Public Security Record No. 32021102000961| Su (tin) dangerous chemical word 02802