1. Joint body is a bridge connecting hydraulic pipe fittings and equipment. The elbow is a tube that changes the direction of the pipe, and their division of labor is different.

2. The hydraulic pipe joint hydraulic system connects the components between the high pressure oil pipe and the high-pressure oil pipe. It is divided into: hydraulic hose, high pressure ball valve, fast joint with intent, jacket type pipe connector, welded pipe joint, high pressure hose, high pressure hose, transition pipe joint, jacket type pipe joint, three general type pipe joint, non standard pipe joint, expanding type pipe joint, right angle pipe joint, rotary pipe joint, quick joint, stainless steel pipe. Joint and copper joint.

Joint body: when the pipe joint is connected to the equipment, the connection mode is not matched or the diameter needs to be changed. This task is completed by the joint body. One end of the joint body is connected to the pipe joint and one end is connected to the equipment.

The elbow is the tube that changes the direction of the pipeline. According to the angle, there are three kinds of most commonly used ones, 45 degrees and 90 degrees 180 degrees. In addition, according to the engineering needs, there are 60 other abnormal angle elbows, such as 60 degrees. The material of the elbow is cast iron, stainless steel, alloy steel, malleable iron, carbon steel, nonferrous metal and plastic. The way of connection with pipes is direct welding (the most common way) flange connection, hot melt connection, electric melting connection, threaded connection and socket connection. According to the production technology, it can be divided into: welding elbow, stamping elbow, pushing elbow, casting elbow, butt welding elbow, etc. Other names: 90 degrees elbow, right angle bend, love and bend.