Threaded connection for gas pipeline main transition cock

This technical specification outlines the requirements for threaded connections used in main pipe valves for gas distribution systems. It defines the precise geometric dimensions, tolerances, and thread forms necessary to ensure a secure and leak-proof assembly between pipe sections and control valves. The document specifies the screw thread design, including the angle, pitch, and depth, to guarantee compatibility with standard fittings found in gas network infrastructure. Detailed guidelines are provided for the manufacturing of the threads, addressing surface finish and mechanical strength to withstand operational pressures. Additionally, it covers inspection methods to verify that manufactured components meet the defined criteria for interchangeability and safety. These regulations are essential for maintaining the integrity of gas piping systems by preventing potential failures at connection points. The text serves as a reference for engineers and manufacturers involved in the production and installation of gas distribution equipment. It establishes a common technical language to facilitate the reliable integration of components from different sources within the same network.