ICS Pakistan (Pvt.) Limited

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PWHT

PWHT eliminates the effects by heating, soaking, and cooling the weld area in a controlled manner to temperatures below the first transformation point, giving the macro structure sufficient time to readjust to its original state and removing the residual stress. The welding process creates a number of undesirable properties such as high stresses and hardness in and adjacent to the weld material. Post Weld Heat Treatment, or Stress-relieving as it is commonly called, significantly reduces the stresses and improves the hardness and ductility of the material. Post Weld Heat Treatment (PWHT) services are used frequently in the following applications.

Process Piping
Power Piping
Boiler and Vessel Repairs
Nozzle Installations

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