GB/T 12236-2025 in English

This standard outlines the specifications for steel swing check valves used in the petroleum, chemical, and related industries. It covers the design, materials, and performance requirements for such valves, ensuring they meet the necessary operational standards. The document provides detailed guidelines on manufacturing, testing, and installation procedures to maintain consistency and reliability across applications. It also includes information on marking and documentation to facilitate compliance and traceability. The standard is applicable to new valves and may also be used as a reference for maintenance and retrofitting activities. It serves as a technical reference for manufacturers, users, and regulatory bodies in the relevant sectors.