45 ° elbows are pipe fittings and pipe connections. It is used in main pipe and branch pipe. To change the direction of the pipe.

According to the radius, it is divided into long radius elbow and short radius elbow.

Long radius elbow: long radius elbow refers to that the curvature radius of elbow is 1.5 times of pipe diameter; if it is greater than 1.5 times, it is the category of elbow.

Short radius elbow: short radius elbow refers to that the radius of curvature of the elbow is equal to the diameter of the pipe, which is often said to be 1 times.

The long radius elbow is the most commonly used one. Generally, it is also long radius by default. The long radius elbow will be used in the place with high pressure or high flow rate. If the resistance requirements of solid conveying pipeline are strict, the elbow with larger radius should be used. Short radius is usually used in low-pressure fluid or where elbows are limited. Long radius elbow is preferred if there are no conditions or are not specified in the contract.