Effect of Hydrogen Embrittlement on Welded Steel Pipes in High-Pressure Environments

Hydrogen embrittlement (HE) is a severe issue affecting the integrity of welded pipes, particularly in oil & gas pipelines and hydrogen transport systems. Key considerations include:

• Hydrogen Diffusion in the Weld Zone: Trapped hydrogen atoms weaken metal bonds, leading to crack initiation.

• Material Selection: Using low-carbon, high-purity steel minimizes HE susceptibility.

• Post-Weld Baking Treatment: Heat treatment at 200–300°C can release trapped hydrogen, reducing embrittlement risk.
  Preventing hydrogen embrittlement is crucial for ensuring the reliability of pipelines transporting hydrogen fuel and sour gas.