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COATING FOR STEEL12 Good Reasons to specify galvanizing- Lowest first cost. (Yes, lowest first cost.)
In many cases galvanizing now costs less to apply than coatings with much shorter lives. - Lowest long term cost.
Even in cases where the initial cost of galvanizing is higher than a comparable alternative. Galvanizing is almost invariably cheapest in the long term. - The economic case for galvanizing is still improving.
There is a high labour cost component inherent in the application of most other coatings and their cost directly reflects increases in the cost of labour. - Long life.
The standard 610gm² galvanized coating has a typical life without maintenance of more than 50 years in rural environments, and 20 to 25 years in urban and coastal conditions. - Reliability.
The galvanized coating is bonded metallurgically to the base steel so that it becomes part of the steel surface it protects. Coating life and performance are reliable and predictable. - Coating toughness.
A galvanized coating has a unique metallurgical structure which gives outstanding resistance to mechanical damage in transport, erection and service. - Elimination of maintenance for long periods.
The use of galvanizing defers maintenance for very long periods compared to other coatings for steel. Remember, maintenance can be extremely expensive when it entails difficult access or plant shut down and when structures are located in remote areas. - Automatic protection for damaged areas
Galvanized coatings corrode preferentially to steel, providing sacrificial or cathodic protection to small areas of steel exposed through damage to the coating. Unlike organic coatings no touch up is needed. - Complete protection
Every part of a galvanized article is fully protected, even recesses, sharp corners and inaccessible areas. No coating applied to a structure or fabrication after completion can provide the same protection. - Ease of Inspection
Galvanized coating thickness is controlled automatically by steel thickness and a standard, minimum coating mass results. Soundness and continuity of coatings are judged readily by eye. - Time savings in factory, and on site.
Galvanizing is faster than painting, and elimination of site painting can save substantial time in site erection or assembly. - Mechanical properties.
Galvanizing has no effect on the mechanical properties of commonly galvanized structural steels.
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