Corrosion Mechanisms and Prevention in Seamless Pipes

Seamless pipes used in harsh environments face various forms of corrosion, affecting longevity and performance.

• 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.

• 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.

• Desalination plants (high chloride exposure).
• Chemical processing plants (acidic environments).