Oxygen combines with iron to form corrosion in less than a thousandth of a second. Corrosion
is an electro-chemical process which cannot be reversed or removed by flushing. The metallic
debris that results will degrade the system and require continuous, expensive replacements
and repairs. These expenditures will be an ongoing problem until the pipe and fittings are
replaced with the correct ones.
The heat from welding causes scale to form on the I.D. of pickled pipe. Figure 1 is an example of the scale removed from just one such weld
joint. Using the procedures specified in the Tech Sheets with REDOX pipe, you can make clean
welds like that of Figure 2 become a reality.
The second type of corrosion is the most common and dangerous -- red rust. You cannot avoid
having this type when using pickled pipe. It is not always visible to the unaided eye, but
it is always present. Rust is caused by the failure to follow acceptable cleaning procedures
when using corrosives on metal. Contrary to popular belief, heavy oil does not prevent the
formation of red rust. Once steel has been damaged by corrosives, the oil merely suppresses
its visible formation. Upon system start-up the damaged steel is subjected to dissolved oxygen
in the lubrication. The combination of oxygen with the intergranular corrosion caused by pickling
produces galvanic corrosion. This results in increasing quantities of metal debris entering
into the lubricating oil stream.
Metallic debris from corrosion is the leading cause of hydraulic component failure. Over
time, it will damage or destroy all components in any system where it is present. To avoid
this costly killer you must use the correct pipe - those that meet the needs
of your system REDOX.
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