Differences in manufacturing process between elbow and bend

　　The essential difference between elbow and bend is mainly the difference between "head" and "pipe". In addition, there are great differences in manufacturing technology.

　　Elbow is a kind of connecting pipe fitting, which is used for the connection at the bend of the pipe and to change the direction of the pipe. It is used to connect two pipes with the same or different nominal diameter to make the pipeline turn 90 °, 45 °, 180 ° and various degrees.

　　1. The elbow is shorter than the elbow. R = 1 to 2 times is the elbow, and the larger multiple is called the bend.

　　2. The cold bend can be bent by the ready-made straight pipe bender, and the secondary anti-corrosion is not required for one-time completion. However, the elbow should be customized by the manufacturer, anti-corrosion should be done, and the ordering cycle is long.

　　3. The price of elbow is higher than that of bend, but the cost performance is much higher than that of bend. The elbow without anti-corrosion treatment is easy to be damaged, but it is widely used in some projects with low requirements because of its low price. Therefore, due to the different performance and price between elbow and bend, attention must be paid to the selection.