{"id":103598,"date":"2023-06-09T15:17:44","date_gmt":"2023-06-09T14:17:44","guid":{"rendered":"https:\/\/staging.express.fr\/non-categorise\/heat-treatment-of-pipes\/"},"modified":"2026-02-11T14:38:25","modified_gmt":"2026-02-11T13:38:25","slug":"heat-treatment-of-pipes","status":"publish","type":"post","link":"https:\/\/staging.express.fr\/en\/pro-tips\/welding-brazing\/heat-treatment-of-pipes\/","title":{"rendered":"Heat treatment of pipes"},"content":{"rendered":"\n\nExtensive welding work – especially on pipelines – requires heat treatment to relieve residual welding stresses and to achieve appropriate mechanical properties of the joint. The weld thus offers perfect reliability.\n

What is pipe heat treatment?<\/h2>\nAll welding involves a modification of the structure of the metals concerned, and thus an alteration of their mechanical characteristics. Heat treatment is then used to reinforce the welds, so that the finished structure has optimum strength.\n\nThe exact term is TTD: Thermal Treatment of Detensioning. The area where the welding has been done is heated to a given temperature for a given time. This allows for the release of welding stresses in order to obtain the appropriate mechanical characteristics for the part.\n\nThe applied treatment generates metallurgical changes within the crystal structure of the materials and compensates for the damage caused during welding. The joints of the pipe become more stable, which prevents cracking when they go to work.\n

Which welding jobs require heat treatment?<\/h2>\nHeat treatment concerns the majority of welding work in the industry:\n