How to properly use welded steel pipe in applications?
As a rule, corrosion and repair of corrosion damage are multi-billion dollar problems. Although corrosion is a natural phenomenon, and can never be completely eliminated, it seems necessary for uses to utilize adequate corrosion protection systems in harsh environments in order to drastically reduce the costs.
Among various common welded steel pipes, hot dipped galvanized steel pipe is widely favored by people, for its zinc coating is more corrosion than bare iron and steel. Furthermore, as galvanized steel pipe has been used for corrosion protection many years. A wealth of real-world, long-term exposure data on zinc coating performance in a wide variety of environments is available. Since this type of steel pipe has a wide range of applications in life, it is important to understand what factors will affect its performance in different environment and that what notes should users do pay attention to in any actual application. How to have the general care and basic maintenance of hot dipped galvanized steel pipe in the actual application?
Try to avoid long period of exposure of the pipes to harsh environment where the Ph is below 6 or above 12.
Try to avoid direct contact between galvanized pipe and some dissimilar metals, such as brass and copper, particularly in corrosive environment. On the other hand, it has been necessary to ensure an insulator between the dissimilar metal and the galvanized product where dissimilar metals are to be used together.
Try to avoid long period of storage of cold rolled steel pipes in damp and poorly ventilated conditions. Ensure the storage place is relatively dry and there is effective ventilation.
If there would exist physical damages to the galvanized coating of products, it is recommended that the damaged part be repaired per as specific production standard.
In addition, it seems very necessary for users to pay more attention to the welding defects in the practical applications. As we all know, welded steel pipe is very popular type of structural steel pipe in the current steel pipe market. It is not unusual to find that, although the wrought form of a metal or alloy is resistant to corrosion in a particular environment, the welded counterpart is not. Further welds can be made with the addition of filler metal or can be made autogenously (without filler metal).However, there are also many instances in which the weld exhibits corrosion resistance superior to that of the unwelded base metal.
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