On the corrosion margin of pipelines
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What should be the corrosion margin for Q345R pipes with a cast layer?
The corrosion allowance of pipelines depends not only on the material but also on the medium inside the pipeline and the design life (usually 15 years). For carbon steel, a value of 1.6 mm is generally used when corrosion is not severe; 3.2 mm is used when corrosion is more severe. In special situations such as erosion by solid particles, a value greater than 3.2 mm should be chosen depending on the specific conditions.
Okay, thank you! Are there any standard regulations for this? For example, like the regulations for containers specified in HG/T 20581-2005...
The pipeline design codes also specify corrosion margins under various conditions