Water supply pipe is an important part of urban water supply system, and its material selection is directly related to water quality, service life, safety and cost. The following will introduce several common water supply pipe materials in detail.

1. metal pipe

Galvanized steel pipe: Galvanized steel pipe is the earliest use of water supply pipe, with high mechanical strength, strong pressure and other advantages. However, long-term use is prone to rust and affect water quality.
2. Stainless steel pipe: Stainless steel pipe is widely used in water supply system because of its strong corrosion resistance and long life. However, its cost is relatively high.

2. plastic pipe

1. PVC pipe: PVC pipe is popular because of its excellent chemical stability, smooth water flow characteristics, lighter weight and reasonable cost. It is widely used in cold and hot water transportation, building drainage and so on.
2. PE pipe: PE pipe has good corrosion resistance, non-toxic, light weight, easy to install and so on. Especially suitable for rural drinking water projects and urban water supply system.
3. PP-R pipe: PP-R pipe is a new type of pipe with excellent heat resistance, good corrosion resistance and moderate price. Widely used in building internal water supply system.

3. composite pipe

1. Aluminum-plastic composite pipe: aluminum-plastic composite pipe middle layer is aluminum layer, inner and outer layer is plastic layer. It has excellent corrosion resistance and high mechanical strength, and is light in weight and easy to install.
2. Steel-plastic composite pipe: This kind of pipe combines the advantages of metal and plastic, has the characteristics of high strength, corrosion resistance, and is not easy to rust, and is suitable for long-distance water supply projects.

4. other pipes

1. FRP sand pipe: FRP sand pipe has excellent corrosion resistance, light weight, high strength, long service life and other characteristics, suitable for chemical industry, sewage treatment and other fields of pipeline system.
2. Cement pipe: Cement pipe has high strength and durability, and is suitable for large-scale water conservancy projects and drainage systems.

Summary: There are various types of materials for water supply pipes, including metal, plastic, and composite.