GB/T 13401-2025 in English

This standard provides detailed technical specifications for steel butt-welding fittings, covering design, material selection, manufacturing processes, and quality control requirements. It outlines the necessary dimensions, tolerances, and testing procedures to ensure the performance and reliability of these components in various industrial applications. The document also includes information on marking, packaging, and storage to facilitate proper handling and use. Additionally, it specifies the requirements for different types of steel materials and their corresponding mechanical properties. The standard aims to ensure consistency and interoperability across the industry by establishing uniform guidelines for production and application.