Partial post-weld heat treatment for of fshore weld joints in process piping

Briefly introduces the working conditions of common process piping that require heat treatment in the construction process of LNG plants,and introduces the heat treatment requirements for process piping, fittings, and piping with attachments. Meanwhile, based on the standards of heat treatment, the heat treatment temperature zones for different connection forms of process piping weld joints are given and used in international projects, providing construction experience for similar projects.