Elbows (also called pipe elbows) are commonly used in pipe systems. They are mainly used to change the direction of the pipe. Elbows are usually used to turn in the pipe system, so that the pipe can flexibly adjust its direction and avoid collision or obstacles.

Elbows (also called pipe elbows) are commonly used in pipe systems. They are mainly used to change the direction of the pipe. Elbows are usually used to turn in the pipe system, so that the pipe can flexibly adjust its direction and avoid collision or obstacles.

Elbows (also called pipe elbows) are commonly used in pipe systems. They are mainly used to change the direction of the pipe. Elbows are usually used to turn in the pipe system, so that the pipe can flexibly adjust its direction and avoid collision or obstacles.

Elbows (also called pipe elbows) are commonly used in pipe systems. They are mainly used to change the direction of the pipe. Elbows are usually used to turn in the pipe system, so that the pipe can flexibly adjust its direction and avoid collision or obstacles.

Elbows (also called pipe elbows) are commonly used in pipe systems. They are mainly used to change the direction of the pipe. Elbows are usually used to turn in the pipe system, so that the pipe can flexibly adjust its direction and avoid collision or obstacles.

Elbows (also called pipe elbows) are commonly used in pipe systems. They are mainly used to change the direction of the pipe. Elbows are usually used to turn in the pipe system, so that the pipe can flexibly adjust its direction and avoid collision or obstacles.