Iron-nickel-cobalt Alloy Tube 4J29
4J29 pipe material is a key product form of the iron-nickel-cobalt (Fe-Ni-Co) series hard glass sealing alloy, also known as "Kovar alloy pipe". Its core function is to achieve the matching sealing connection between metal and hard glass/ceramic, and it is the "sealing cornerstone" of electrical vacuum devices.
