What should I do if the steel pipe of leather chair bends?

Straighten with a steel pipe straightener.

1, when the diameter of steel pipe is small and the pipe wall is thick, mechanical correction methods, such as bending machine, jack and corresponding fixture, can be adopted, which is simple and easy.

2. When the diameter of the steel pipe is large and the wall of the pipe is thin, the mechanical correction method should not be adopted, and the steel pipe straightener should be used for correction.