20 Female Pipe-12 Female Pipe CouplingThe 20 Female Pipe 12 Female Pipe Coupling is a pipe fitting typically used to connect pipes with female threads on one side and female threads on the other. This type of fitting is designed to adapt between two different sizes of female threaded pipes, enabling a transition from a larger pipe to a smaller one. It is commonly used in various fluid, gas, and industrial piping systems where different pipe sizes need to be interconnected. Specifications