How many cold water pipes are used in 85 rooms in the hotel?

25 specifications. In the cold hot water engineering of hotels, the main diameter of hot and cold water supply depends on the water consumption, and most hotels can use 25-caliber cold water pipes. The cold water pipe is extruded from random polypropylene. In the late 1980s, PP-R was a new generation of pipeline materials made by randomly and uniformly polymerizing 5% PP in the molecular chain through gas phase polymerization process. PP-R is non-toxic, durable and easy to install, which is widely used in cold water pipelines of engineering, water conservancy and industry.