Post Weld Heat Treatment (PWHT)

Overview

Post Weld Heat Treatment (PWHT)

PWHT is a controlled process when material that has to be be welded is reheated to a temperature below its lower critical transformation temperature, and then it is held at that temperature for a specified period of time; however, it has a specific meaning in the oil, gas, and petrochemical industries. Industry codes, such as the ASME Pressure Vessel and Piping Codes, often require mandatory performance of PWHT on certain materials to ensure a safe design with optimal mechanical and metallurgical properties.

Advantages:

  • Improving the ductility of the materials
  • Reducing the instances brittle fractures
  • Tempered metal
  • Improves and reduces the metal’s hardness in some cases
  • Improve metallurgical properties
  • The prevention of cracking caused by hydrogen by its removal

Our company

ESNADVB for Reliable NDT, Heat Treatment, and Technical Diagnostics Services

We provide high quality, reliable and competitive services
according to Clients` expectations and projects requirements

ISO 9001-2016, ISO 45001-2019, ISO 14001-2016 accredited company

NCA Accreditation as per ISO 17025

Employees qualified as per ISO 9712-2012 / PCN / ASNT / CSWIP

Licensed to carryout all advanced / conventional NDT and PWHT

Licensed to operation, transport and storage of Gamma & X-Ray Materials

12 years of Safe services with zero LTI