Plastic pipes fitting materials is high-tech recombination type chemical construction material, and

chemical construction material is the fourth new-type building material following with steel material, wood

material and cement. Because of plastic pipe fitting

materials has small flow loss, energy-saving, material-saving, ecology protection and easy to construct, it is

widely used in building water supply and drainage, cities water supply and drainage and gas pipes fitting area,

becoming a main force in urban construction.

Advantages of plastic pipes fitting materials

1.Hydraulic characteristic. The plastic pipes fitting material has advantages of smooth pipe wall, low

resistance, large water flow amount. When come across gradient terrain, we can reduce plastic pipe fitting’s

aperture in smaller construction capacity.

2.Sealing. Cement pipe has worse sealing property, and concrete pipe belongs to rigid pipe, slightly move

may damage the connecting part. What’s more, cement pipe is sealed by vulcanized rubber ring, plastic pipes

fitting is sealed by TPE sealing ring. Plastic pipes fitting’s service life is longer than cement pipes.

3.Service life and corrosion resistance. Cement pipe’s service life only has 15 years while plastic pipes

fitting has a quite long service life of 50-100 years, and plastic pipes fitting has better corrosion

resistance than cement pipes.

4.Laying and construction. Plastic pipes fitting has properties of light weight, longer, fewer pipe joints,

easy to connect and construct and lower construction cost.

Disadvantages of plastic pipe fitting materials

1.Worse tensile strength and tenacity. Fine UPVC pipe’s has larger ductility, while worse plastic pipe

fitting materials always has brittleness and low ductility, that is easy to breakage.

2.Worse shock resistance. Testing falling weight impact according to GB/T5836.1-92 standard, we found that

the first time pass rate of plastic pipe fitting materials is lower than 50%.

3.Lower softening temperature and easy to thermal deformation. In order to enhance softening temperature,

some manufacturers just simply increase the feeding amount, this does have beneficial for increasing softening

temperature, but it greatly reduce the impact resistance, tensile strength and tenacity of plastic pipe fitting

materials at the same time.

Advantages Of PPR Pipe

PPR pipe is a new type of energy-saving pipeline product, which mainly has the following characteristics:

1.Lightweight: density is 0.91g/cm3, ppr tube is only one-ninth of steel pipe, and one-tenth of copper

pipe. Due to its lightweight, it can greatly reduce the transportation cost and the construction intensity of


2.Hygienic and non-toxic green building materials: PPR pipes are polyolefin thermoplastics, whose molecules

are only composed of carbon and hydrogen, without harmful and toxic elements, and have reliable hygienic

performance. The whole process of raw material synthesis, molding processing, product use, and disposal will

not cause adverse effects on the human body and the environment and is called green building materials. PPR

pipes can be used not only in cold and hot water systems but also indirect drinking water systems.

3.Heat-resistance and heat preservation are energy-saving products: PPR pipe Vicat heat-resistant

temperature is 131.3℃. Under certain working pressure and 70℃ working temperature, it can be used for a long

time (more than 50 years), and the maximum working temperature is 95℃. Fully meet the requirements of the hot

water system specified in the building water supply and drainage design code.

4.Good heat preservation performance: The thermal conductivity of the PPR pipe is 0.23w/m℃, which is only

one-twentieth of that of steel pipe (43-52w/m℃). It has better heat preservation performance. Compared with

metal pipes, Used in hot water and heating systems, it can save a lot of insulation materials and energy.

5.Hot-melt connection, safe and reliable: PPR pipe has good heat-welding performance. The hot-melt

connection between pipes and PPR pipe fittings made of

the same PPR material is the fusion of molecules and molecules, and there is no obvious interface. The entire

pipeline system The connection becomes a whole, so the hot-melt connection of this method is more reliable than

other pipes’ solvent bonding, mechanical connection, an elastic sealing socket connection, and the operation

is simple, the speed is fast, and it is especially suitable for direct buried and hidden applications. During

construction, there is no need to consider whether there will be leakage at the connection part during long-

term use.

6.Good corrosion resistance: Except for a few oxidants, it can withstand the erosion of a variety of

chemical media, will not rust, will not corrode, will not breed bacteria, and will not have electrochemical


7.Water flow resistance is small: the inner wall of the ppr pipe is smooth, will not scale, and the wear

resistance system is only 0.007, which is much lower than that of the metal pipe, and the water flow capacity

is 30% higher than that of the metal pipe of the same specification.

8.The ppr tube has no pollution to the environment during production, construction, and use, and will not

cause white pollution problems, and is a green product.