Reducing street 90 degree elbow malleable iron pipe fitting is a plumbing fitting，used to connect two pipes of different sizes at a 90 degree angle, with one end designed to fit inside a larger pipe and the other end to fit over a smaller pipe. It is commonly used in plumbing, heating, and gas systems to redirect piping around obstacles, change direction, or transition between pipe sizes. The malleable iron construction makes it durable and resistant to cracking or breaking under pressure.
