Seamless pipes used in harsh environments face various forms of corrosion, affecting longevity and performance.
Types of Corrosion Affecting Seamless Pipes: Pitting Corrosion: Localized attack, common in chloride-rich environments (e.g., offshore drilling).
Sulphide Stress Cracking (SSC): Occurs in H₂S-containing sour gas applications.
Erosion-Corrosion: High-velocity fluid causes synergistic mechanical and chemical wear.
Prevention Techniques: Use of Alloyed Materials: Duplex stainless steels and inconel-clad pipes.
Surface Treatments: Epoxy coatings, zinc phosphate treatment.
Cathodic Protection: Sacrificial anode systems for subsea pipelines.
Industries Most Affected:
Desalination plants (high chloride exposure).
Chemical processing plants (acidic environments).