The purpose of industrial UPVC pipe and civil PVC pipe, and in which aspect.

Compared with traditional metal pipes, UPVC CPVC plastic pipes have many characteristics such as light weight, corrosion resistance, high pressure resistance, no scaling, no water flow noise, clean and hygienic, low water flow resistance, environmental protection and no secondary pollution, good weather resistance, strong heat preservation, long service life, and easy installation, and have been favored by the pipeline engineering community.

Answer: a, b, c

The connection methods used by UPVC plastic pipes are threaded connection, socket bonding, socket welding, and flange connection.

Answer] :d UPVC drainage pipe has excellent physical and chemical properties, chemical corrosion resistance, high impact strength, low fluid resistance, and 30% higher flow rate than cast iron pipes of the same diameter. Aging resistance, long service life, service life is not less than 50 years; It is light and durable, easy to install, and can greatly reduce the construction cost compared to cast iron pipes of the same specification. Plastic pipes have low melting point and poor heat resistance, and high-rise buildings should be equipped with fire arrest rings or fireproof sleeves according to the design requirements for drainage plastic pipes.

The fire retardant ring is made of metal cavity material shell, filled with flame retardant expansion core material, sleeved on the outer wall of the hard PVC pipeline, fixed on the floor or wall part, when the fire occurs, the core material is heated and expands rapidly, squeezes the UPVC pipe, and blocks the pipeline through the hole in a short time to prevent the fire from spreading along the hole.

Answer] :d The knowledge points assessed in this question are the characteristics of the reeds of the plastic erection old pipe. At present, the most used water supply plastic pipe in China is a rigid PVC plastic pipe, also known as PVC pipe, with a temperature of 5+45.

The plastic fiber mask pipe has good chemical stability, corrosion resistance, is not eroded by acid, alkali, salt, oil and other media, has low water flow resistance, light weight, easy installation, but poor temperature resistance and low strength, therefore, it is limited in use, and is mainly used for flushing pipes of toilets, stool troughs and urinals.

1. Buried water supply system in residential areas and factories;

2. Urban water supply pipeline system;

3. Indoor water supply and reclaimed water systems for civil buildings and industrial buildings;

4. Water treatment pipeline system of water treatment plant;

5. Mariculture industry;

6. Garden irrigation, well sinking and other projects and other industrial pipes.

1.indoor water supply and reclaimed water systems for civil and industrial buildings;

2.buried water supply system in residential areas and factories;

3.urban water supply piping systems;

4.water treatment piping system for water treatment plants;

5.mariculture;

6.Garden irrigation, well sinking and other projects and other industrial pipes.

Compared with traditional metal pipes, UPVC CPVC plastic pipes have many characteristics such as light weight, corrosion resistance, high pressure resistance, no scaling, no water flow noise, clean and hygienic, low water flow resistance, environmental protection and no secondary pollution, good weather resistance, strong heat preservation, long service life, and easy installation, and have been favored by the pipeline engineering community.

Most of the industry is used for sewage discharge.

PVC pipe use: mainly suitable for house wire pipes and drainage pipes.

Advantages and disadvantages: The advantages are mainly cost-effective, simple construction, light weight, and reduced construction trouble. The disadvantage is that the thickness is relatively thin, and the performance of pressure resistance and high temperature resistance is relatively poor.

PPR pipeline use: mainly suitable for water supply pipes and hot water pipelines of houses.

Advantages and disadvantages: cost-effective, corrosion-resistant, high-temperature resistant, environmentally friendly and healthy, safe and non-harmful to the human body. The disadvantage is that the construction is more troublesome, and it needs hot melt construction, which is more expensive.

Uses of PPR Pipes:

It is used in hot and cold water piping systems in buildings, including central heating systems.

Purified water supply system for direct drinking.

For ** (centralized) air conditioning systems.

It is used for industrial purposes such as conveying or discharging chemical media.

It is used for heating systems in buildings, including floors, siding and radiant heating systems.

Used in rural drinking water systems.

It is used in the circulating water supply system of hot and cold water in churches.

It is used in the circulating water supply system of hot and cold water in schools.

It is used in the hot and cold water circulation system of five-star hotels.

It is used in the hot and cold water circulation system of the building.

PVC Drain Pipe Usage:

Drain pipes are used in the drainage system inside and outside the plant.

Sewer pipes are used in villas and drainage systems inside and outside the community.

Sewage pipes are used in bridge drainage pipeline works.

Drainage pipes are used in high-speed rail drainage pipeline projects.

Drainage pipes are used in farmland drainage pipeline projects.

Drain pipes are used for mariculture.