Posted by & filed under Pipe Corrosion.

Do you know the cause of the external corrosion on your pipes? Your pipelines are in contact with a wide range of external substances. Subpar piping, shoddy construction, adverse environmental conditions, and biology are a few contributing reasons.

Continue reading to learn more about the factors that speed up pipeline corrosion.


1)  Environmental Conditions

The installation environment for the pipes has a significant role in external pipe corrosion. This issue often arises when pipelines are buried in the ground, in salt water, or close to marine environments. For instance, a pipe installed in the sea is exposed to seawater. The chemicals in the water harm the pipe’s exterior, slowly corroding the metal and weakening it. Fortunately, coating and pipelining methods guarantee that the salt in the water won’t cause that corrosion. The good news is that coating and pipelining technologies can ensure that the salt in the water won’t cause corrosion.

2)  Weather Effects

Your pipes may accidentally break due to rain, extremely high temperatures, or earthquakes. In addition to these factors, the weather also contributes to external pipe corrosion. Improper maintenance and negligence accelerate the process.

Fog, dew, rain, or humidity can cause atmospheric corrosion. The temperature and air pressure in the surrounding environment also influence the corrosion process. The amount of corrosion activity increases as the air temperature rises. To safeguard your pipes from atmospheric deterioration, you must figure out ways to stop condensation. You can also use protective coatings or corrosion inhibitors.

3)  Issues With Insulation

Insulation can be a reliable barrier against moisture to safeguard cold water lines. However, defective materials might result in condensation, leading to external pipe corrosion. This issue can continue for years and endanger the entire piping system because it is hidden from view.

The insulation may sometimes appear wet, a symptom that your pipes may malfunction. You still have time to stop the damage if you catch this issue early though. Replace your outdated insulation with materials that offer improved moisture protection.

4)  Microorganisms

Pipelines may also corrode as a result of microorganisms like fungi and bacteria. They aren’t the actual source of the damage, but they can speed up and change the way that corrosion works. Metals may develop under-deposit, pitting, or crevice corrosion due to their by-products. They typically impact pipes in contact with sewage, seawater, freshwater, crude oils, and process chemicals. These factors cause microbiologically-influenced corrosion to occur. Maintenance, chemical processing, and the application of exterior coatings can all significantly reduce this form of corrosion.

5)  Contact With Other Metals

Galvanic corrosion happens when two different kinds of metal are joined together and immersed in a corrosive solution. While the second metal is protected, the first metal corrodes quickly. This could happen if you use a connection or valve made of a different metal. It is best to select metallic materials with equivalent corrosion potentials to prevent galvanic corrosion. Use a spacer or some insulation to break the connection at each end. Lastly, it’s a good idea to cover both pipes.


DynaGard is one of Riserclad’s most affordable pipe corrosion protection products because of its simple installation and exceptional protection. Our pipe saddles reduce the risk of pipe corrosion by avoiding moisture infiltration and metal-on-metal contact without chemicals, straps, or hot work. Get in touch with us today for any queries or to order samples of our pipe protection products.

Leave a Reply

Your email address will not be published. Required fields are marked *