SH/T 3523-2020 in English

This standard provides detailed specifications for the welding of chromium-nickel stainless steels, iron-nickel alloys, nickel-based alloys, and stainless steel clad steels in the petrochemical industry. It covers various aspects including material selection, welding procedures, quality control measures, and inspection requirements. The document outlines the necessary conditions for ensuring the structural integrity and performance of welded joints under different service environments. It includes guidelines on the preparation of welds, the application of appropriate welding techniques, and the implementation of post-welding treatments. Additionally, it addresses the requirements for personnel qualifications, equipment calibration, and documentation processes. The standard aims to ensure consistency and reliability in welding operations, contributing to the safety and efficiency of petrochemical facilities. It serves as a reference for engineers, welders, and quality assurance professionals involved in the construction and maintenance of industrial structures.