Can the property management company set up pipelines at will without the consent of the tenants during the lease period?

This kind of behavior is certainly not unreasonable, and of course it is illegal. Since you are a tenant, you certainly have a reasonable right to use it. Although the property should also consider the interests of tenants when decorating the house, the property has no right to transform the original structure of the house without authorization. Although it is for the better use of the house, we should also do a good job of consultation with the tenants.