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Exposed Surface Coatings Steelcoat System Selection Guide

Denso Steelcoat Systems are divided into 4 categories which involve different surface preparation
.i.e. Categories A,B, C, and D.
For a summary of these categories please go to the bottom of this page or click here

Surface Preparation
Protecting:
Steelcoat Systems
Expected Service
Life (years)
Average Thickness
(Microns)
Category A
(abrasive blast cleaning)
Steel Structures
rigs, new jetty piles,
decking, walkways,
ramps, loading
installations,
very hot pipes
plant, tanks, pipelines,
cranes, bridges,
steelcoat

20-30

15-25

12-15

12-15

1500

1000

4-500

4-500

Category B
(power tool)
process plant,
pipe bridges,
structural steel,
pipework,
fittings,
pipelines,
tie bars,
storage tank bases,
metal roof purlins,
hot pipework


7-9

30

30

30

15

15


4-500

1600

1600

1400

1250

2300
(55% overlap)

Category C
(handwire brushing)

cold/damp pipes,
badly rusted/pitted
pipes and
structural steelwork,
fittings,
pitted pipelines,
old metal roof sheets

15

15

30


30

1400

1400

3000


2800

Category D
(no cleaning)
pre-stressing and
post tensioning
bridge cables and
anchorages
50 plus
sleeve/anchorage
completely filled
Note:
Preparation of galvanized steel and aluminium surfaces
Degrease and roughen surface by mechanical abrasion or abrasive sweep blasting.
Apply Denso Galvprime in accordance with the application instructions.
Apply two coats of Denso S.T. Epoxy in accordance with the application instructions.
top
Surface Preparation:
     
  Category A Abrasive blast cleaning

 

  Standard: Sa2½
Surface profile: 50-75 microns
   
Category B Fresh water wash down followed by a thorough hand/power tool cleaning
    Standard: St2
     
Category C Fresh Water wash down, heavy chipping hammers to remove heavy rust, thorough
    hand wire brushing to remove all loose scale and old coatings(conditions where St2 mechanical cleaning is not fully achievable due to condensation, deep pitting etc).
     
  Category D No cleaning required - new cables
     
Detailed Surface Preparation Data must be referred to.