Is the branch pipe of the sink sewer guaranteed?

Warranty of sewer branch pipe of sink. According to the survey data, the upper and lower pipes of the bathroom sink are all guaranteed for 5 years. Water supply and drainage pipelines, equipment installation works provide a two-year warranty. Because the sewer pipe of the bathroom belongs to the public part of the building, if it exceeds the warranty period of the house, the property right unit can be notified by means, and the owner can apply for using the public maintenance fund for maintenance.