Application to pipe post-weld heat treatment control

Total support for heating program pattern recording control

What is post-weld heat treatment for piping?

• PWHT (POSTWeldHeatTAlso called heat treatment, it is a heat treatment performed on welds and welded structure.
• The purpose of the heat treatment is to relieve residual welding stress.Stress relief annealingIt is also called.
• Occurs in a corrosive environmentStress Corrosion Crackingor hydrogenAlso effective for.

Block diagram of pipe post-weld heat treatment control device

Heating program pattern example

• According to ASTM standards, heating program pattern are determined for each pipe thickness, pipe diameter, and pipe material.