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Corrosion Prevention
Finishing Coat
Edition: March 2000
W 2903 en
Page 1 of 2
Replaces W 2900 : 1997-06
ENDN.BO Ler2000-05-09
Steggemann-Meier2000-05-08
1 Scope
The requirements of this standard apply to the specialist areas
and SGEs at the Bocholt, Wesel, Penigand Friedrichsfeld sites.
2 General
2.1 This works standard specifies all the priming coats for the
standard and alternative treatment ofFLENDER products.
2.1.1 No protective paint coat can be applied to surfaces which
have been treated with preservative withoutpre-treatment (removal
of the preservative).
3 Highly chemical-resistant finishing coats, e.g. for use in
clarification plants
The following corrosion preventive medium has proved itself in a
long-time test over three years.
3.1 Priming coat
P22 special coating, anthracene brown to W 2902 Table 1.3.2
Finishing coat
2 x PU finishing coat 5240 HC, highly chemical-resistant.
Colour: RAL 5015 sky blue, total coatthickness min. 135 mm.
Alternative colours: see Table 2 under PU Thick Coat 5240.
Highchemical-resistance is achieved by changing the mixture ratio
(MR) by weight from 9:1 to 5:1. See alsoTable 2 RAL No. 5015.
4 Finishing coats
Table 1: Standard finishing coat
RAL-No.
Colour Description Thicknessper coat
m
Properties(Information)
Ident. no
skyPU Thick Coat 5340 airless 1)
ppResistant to acids, oils, weak alkalis, solvents,
p p p243 117
5015blue PUThick Coat 5240 1)
approx 80 weather action, temperatures up to 120 upto 140 Cfor
short periods), tropicproof 243 120
1)The 5340 and 5240 paints differ only in the manner of
application (air or airless sprays)
Works Standard
Drawn
Check.
Dept.Amendment
Observeprotection
marks(DIN
34)
http://ew2904.pdf/http://inhalt.pdf/http://ew2902.pdf/
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W 2903 en (Mar. 2000) Page 2 of 2
Table 2: Alternative priming coats
RAL-No.
Colour Description Thicknessper coat
m
Properties(Information)
Ident. no.
1021rapeseed
yellowKH Metal Coatin 5010 Resistant to weak acids mineral oils
water
243 111
3000 flame red
(alkyd resin)approx 40
, , ,weather action, temperatures up to 120 C 243 112
6011 reseda green 243 124
1021rapeseed
yellow243 105
6011 reseda green PU Lacquer 5240 approx 80 243 121
7011 iron grey
243 122
9005 jet black Resistant to acids, oils, weak alkalis,
solvents,p p p
243 113
9005 jet black PU Lacquer 5031 approx 70wea er ac on, empera
ures up o upto 140 C for short periods), tropicproof
- bluish grey PU Lacquer 5240 approx 80 Highly chemical
resistant to increase the 243 128
5010 gentian blueresistance as stated under Table 2 RAL No.5015;
HC is then added to the designation. 243 106
5003 sapphire blue PU Lacquer 5240 approx 80
.
243 107
5009 azure 243 110
5014 pigeon bluePU Bonding Coat 5049texture-finish
approx 80 243 108
Highly chemical resistant finishing coatings, e.g. for sewage
works
5015 sky bluePU Thick Coat 5240 HC(mixture ratio 5:1)
80up to100
Highly chemical resistant to increase theresistance as stated
under Table 2 PU ThickCoat 5240.
243 118
