Flexible joints are made of malleable cast iron, also known as oil fittings, and are a type of pipe fitting with a three-dimensional polygonal design. The inner layer is engraved with three-dimensional threads, and the connection form is a fixed joint and a flexible female joint used together. The two ends are connected to the corresponding pipe threads, and the middle is sealed with PVC or rubber pads.
Flexible joints are mainly used for connecting matching hardware accessories and can be installed at various pipeline interfaces for use. Due to its convenient installation and disassembly, flexible joints are widely used in industries such as civil construction, plumbing engineering, automobile manufacturing, and shipbuilding.