The world of hot dip galvanizing around us - hdgasa
The world of hot dip galvanizing around us - hdgasa
The world of hot dip galvanizing around us - hdgasa
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Traditional epoxy Duplex System<br />
system<br />
Surface preparation SSPC SP10 As described above<br />
Paint system 2 coats amine aliphatic As described above<br />
epoxy, 100 µm DTF each<br />
Service life in years,<br />
nomaintenance<br />
Cost, US$/m2 over service life<br />
9 28*<br />
36.69 23.91<br />
*Service life in years (no maintenance) <strong>of</strong> a duplex system calculated from<br />
1.5*(HDG+Paint). HDG time: 10 years / Paint time: 9 years<br />
Comparison between the two coating systems.<br />
<strong>The</strong> table summarises the coating<br />
conditions.<br />
Concl<strong>us</strong>ion<br />
With all <strong>of</strong> the above it is concluded that<br />
under these circumstances should<br />
consider the variables involving<br />
ind<strong>us</strong>trials activities in the vicinity <strong>of</strong> the<br />
facility to classify environments and<br />
determine the appropriate corrosion<br />
protection that delivers the expected<br />
<strong>The</strong> <strong>world</strong> <strong>of</strong> <strong>hot</strong> <strong>dip</strong> <strong>galvanizing</strong> <strong>around</strong> <strong>us</strong><br />
Net present value, US$/m2<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
Figure 5. Life cycle costing graph.<br />
service life for the project and result in<br />
economical behaviour through time.<br />
<strong>The</strong> selection <strong>of</strong> protection system should<br />
consider their behaviour through the<br />
service life taking into account the costs <strong>of</strong><br />
operation maintenance, safety issues and<br />
stopping processes.<br />
<strong>The</strong> Association wishes to thank and acknowledge<br />
the following people for this article:<br />
Life cycle costing<br />
0<br />
0 5 10 15<br />
Time, years<br />
20 25 30<br />
Duplex system, Polyurethane finish Epoxy 2 coats, 200μm DTF<br />
David Vela – Executive Director, Latin America<br />
Zinc Association (LATIZA)<br />
Ricardo Suplicy Goes – General Manager, Nonferro<strong>us</strong><br />
Metals Association, Brazil (ICZ)<br />
Eng. Luis Gallegos – General Manager <strong>of</strong> BBosch<br />
Galvanizing, Chile & Brazil<br />
Juan Antonio Osses M – Commercial Manager, B<br />
Bosch Galvanizing<br />
Christian Sánchez Villa – Technical Marketing<br />
Manager B Bosch Galvanizing<br />
Volume 8 Issue 4 2011 Hot Dip Galvanizing Today 9
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