Why is heat treatment required for liquefied gas pipelines?
Thread Content
Why does the liquefied gas pipeline need heat treatment? I seek answers and discussions from experts in this field
You didn’t specify what the material is or what the pressure is – welding heat treatment is definitely used to eliminate residual welding stresses and improve the stress condition of the joint
LPG cylinders require heat treatment; I haven’t heard that pipelines need heat treatment
Since liquefied petroleum gas contains impurities (such as hydrogen sulfide), stress corrosion can occur under conditions of residual stress; therefore, heat treatment is used to remove this stress and reduce its level
It should contain some hydrogen sulfide; stress corrosion should be considered.
Asking questions without clarifying the conditions……
Since liquefied petroleum gas contains impurities (such as hydrogen sulfide), stress corrosion can occur under residual stress; therefore, heat treatment is used to remove this stress.