Cast Iron Elbow Pipe fitting, also known as elbow repair device, elbow plug, is a kind of emergency repair and plug for elbow itself or elbow and pipe joint leakage. Elbow Half fitting is mainly 90 degree elbow Half fitting . Cast Iron Elbow Pipe fitting structure: Elbow Huff fitting adopts upper and lower structure, lined with sealed rubber, directly aligned to the elbow position, locking bolts can be used. The ends of the elbow are stuck in the pipe, and the leaky elbow is wrapped in it.