Summarize the valve body and welding materials, welding method, welding structure, welding process and relevant tests of all welded pneumatic ball valve, so as to provide reference for production guidance of all welded pneumatic ball valve manufacturers and users.

Pneumatic cryogenic ball valve: the pneumatic cryogenic ball valve is applicable to the management system of cryogenic liquid storage and transportation equipment. It is characterized by flexible switch and reliable sealing, and can also be used for the management system of other cryogenic and cryogenic media. This product is mainly used to export liquid cryogenic media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products and other cryogenic media.