Threaded elbow (also known as threaded elbow) is a pipe fitting that changes the direction of the pipeline in the pipeline system.According to the angle, there are 45° and 90°. In addition, according to the project needs, it also includes other abnormal angleelbows such as 60°. Threaded elbow materials include cast iron, stainless steel, alloy steel, forgeable cast iron, carbon steel,non-ferrous metals and plastics, etc.