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Sedelon Valve Painting Standard

Date:2021/11/3 0:00:00     Click:1156

Sedelon Valve Painting Standard



Different engineering environments and corrosion classes have different standards for valve painting.

Sedelon valve painting standard is as follows:

Corrosion Class

Weight Loss/
Thickness Loss

External Environment

Internal Environment

C1, C2

10-200g/
1.3-25μm

Country/dry area
low pollution

Heated/unheated buildings/neutral atmospheric environment

C3

200-400g/
25-50μm

Urban and industrial atmospheric environment

moderate SO?pollution
coastal areas with low salinity

Workshops with high humidity and mild air pollution

C4

400-650g/
50-80μm

Industrial areas and coastal areas with moderate salinity

Chemical plant
swimming pool

C5-I(industry)

650-1500g/
80-200μm

Industrial areas with high humidity and harsh atmospheric environment

Almost long-term condensate/heavily polluted buildings or areas

C5-Mocean

650-1500g/
80-200μm

Coastal and offshore areas

Almost long-term condensate/heavily polluted buildings or areas



Category

DFT Range(μm)

Contains Zinc-Rich Primer
Least dft(μm)

Expected Anti-corrosion Years

C2

80

Low(2-5 years)

80-120

Middle(5-15 years)

160-200

80

High(15 years)

C3

120-160

Low(2-5 years)

160-200

80

Middle(5-15 years)

200-240

160

High(15 years)

C4

160-200

160

Low(2-5 years)

200-240

200

Middle(5-15 years)

240-320

240

High(15 years)

C5I
C5M

200-240

200

Low(2-5 years)

240-280

240(C5I), 280(C5M)

Middle(5-15 years)

280-400

280(C5I), 320(C5M)

High(15 years)

Usually, except for carbon steel material(WCB, LCB, etc.), valves material of stainless steel, bronze and other materials do not need to be painted due to themselves are corrosion-resistant.

In addition, Sedelon can customize the valve painting color according to customer requirements.


The following are various valves with different painting colors for your reference.

















+86-13757731699 sales@pressure-valves.com

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