How can the owner give him an illegal rectification order if he changes the property right of natural gas pipeline privately?

Send a notice of violation rectification.

If the owner refuses to make rectification or makes improper rectification, the property management company shall issue a written notice, require the owner to make rectification, and set a rectification period. The notice shall specify the specific requirements and consequences of rectification, and be approved by the property management committee or the owners' committee, and signed by the owners to confirm receipt.

It is a serious violation for the owner to change the natural gas pipeline without permission, which may cause potential safety hazards and legal risks.