GB/T 12221-2025 in English

This standard specifies the structural length requirements for metal valves. It provides detailed guidelines on the dimensions and measurements that should be adhered to during the design and manufacturing processes of such valves. The standard aims to ensure consistency and interoperability across different valve types and applications. It includes specifications for various components and their relative positions, which are essential for proper installation and functionality. The standard is applicable to a wide range of industries where metal valves are used, including but not limited to petroleum, chemical, and power sectors. It serves as a reference for manufacturers, designers, and users to ensure compliance with established norms.