Antirust system selection considerations are often based on economic. However, the initial costs often can not represent the overall cost of various types of rust-proofing systems.
The cost of maintenance may vary significantly from system to system. If it is difficult to re-maintain the work close to the work, or need to stop operating, or need additional product and machinery covering operations, or need to erect scaffolding, etc., all of these operations can make the substantial increase in the cost of maintenance.
The price of galvanizing is also affected by the ease with which the structure or work may affect its handling. Unfortunately, it is not currently possible to formulate zinc plating costs in common use, but this is also true for other surface treatment systems.
The cost of galvanizing is usually based on the weight of the work piece. This point is different from the general coating method of surface area pricing. In European terms, the initial cost of hot-dip galvanizing is lower than for painting, as the coating takes more labor costs than galvanizing.
To compare the total cost of various types of corrosion protection systems, the interval between individual maintenance requirements may change. Therefore, the comparison work becomes quite complicated. Maintenance costs may vary even at maintenance intervals. Therefore, the long-term erosion life provided by zinc plating, combined with the excellent properties that resist corrosion even in the case of small damage, make hot-dip galvanizing more economical and more cost effective than other surface treatment methods in terms of long-term corrosion protection. convenient.
The total cost of anti-corrosion protection system is related to life expectancy, labor costs, additional costs and interest rates to maintain the complexity of the work and other factors. The initial cost of hot-dip galvanized paint coating than the high cost of long-term total anti-corrosion paint coating costs lower than. The more complex the shape of the workpieces, the greater the surface area per unit weight, the cost of galvanizing is competitive with the paint, and the zinc coating can be completed in a short period of time without the cost burden associated with the risk of on-site construction delays . The above reasons coupled with long-term corrosion life make hot-dip galvanized corrosion protection the most competitive engineering method.
In terms of long-term economic benefits, hot dip galvanized corrosion operations. It is the best of all other corrosion protection systems. Although the initial investment costs may be slightly higher than other systems, but the long-term maintenance-free features, the total cost is much lower than the other systems, as shown in Figure 1 below.
Figure 1: Hot-dip galvanizing and painting costs over a 20-year period
From Figure 1, it can be seen that the hot-dip galvanized corrosion protection project has the most excellent long-term economic benefits. In particular, with the rising wages, the cost of painting and maintenance costs will continue to rise, but also shows the excellent hot-dip galvanized.