What is the difference between UPVC spiral noise reduction drain pipe and empty wall spiral UPVC dra

The solid-walled spiral noise reduction tube is made of PVC resin as the main material, and at the same time, an appropriate amount of stabilizer, lubricant, ultraviolet absorber, processing modifier and impact modifier are added, and the pipe is kneaded and extruded. The product's unique inner spiral structure reduces drainage noise considerably. If the inner spiral pipe and the new water inner wall UPVC cyclone noise reduction device are used together, the drainage noise can be reduced by 5 10db, which is better than the cast iron pipe and better than the ordinary PVC drainage pipe, which is beneficial to the health of the people.

At the same time, the UPVC solid-walled spiral noise reduction tube also has excellent physical and mechanical properties.

Performance indicators: 1Tensile strength: the same material made of splines, its tensile strength is 40MPa;

2.Drop weight impact test: no rupture;

3.Vicat Softening Temperature: 79 ;

4.Flat test: the outer tube is pressed to the original diameter of 50 peng, and the tube does not rupture;

5.Elongation at break: 30%;

6.Longitudinal retraction: 9%.

There is not much difference between the use of hollow walls and solid walls, the concept of hollow walls comes from the north more, used for drainage risers in high-rise buildings, and a single riser system can be constructed. Hollow walls are slightly better at silencing, but their impact resistance is weakened.

There is no substantive difference, nothing more than a hollow one and a solid-walled one. The effect is pretty much the same.

Corrosion-resistant, non-scaling, hygienic, non-rusty; Due to the simple composition of PP R, the basic components are carbon and hydrogen, which meets the food hygiene regulations, is non-toxic, and is more suitable for drinking water transportation. Heat-resistant, pressure-resistant, long-service life PP R pipe long-term use temperature up to 95, short-term use temperature up to 120. Under the condition of using temperature of 70 and working pressure of 1 2MPa, it can be used continuously for a long time, and the service life can reach more than 50 years.

Lightweight, high strength, low fluid resistance, PP R pipe density is only 1 8 of metal pipes, pressure test strength up to 5MPa, and good toughness and impact resistance. Due to the smooth inner wall, no rust and no scaling, the fluid resistance is small. upvc：

Also known as hard PVC, it is composed of amorphous thermoplastic resin made of vinyl chloride monomer through polymerization reaction and certain additives (such as stabilizers, lubricants, fillers, etc.). Water supply pipes can also be used, but they are not as good as PPR.

Pipes should be divided into cold water pipes and hot water pipes according to different temperature and pressure. Poor frost resistance, not resistant to high temperature and high pressure, long-term working temperature at 0 °C 70 °C. Surface-mounted light will penetrate light and oxygen, and it is easy to breed bacteria for a long time.

The UV resistance is poor, and it is easy to age for a long time. The expansion coefficient is large, the creep is strong, and the tube body will be deformed due to thermal expansion and cold contraction after long-term use. Deficiencies of water supply UPVC pipes:

The interface is generally bonded with glue, and the frost resistance and heat resistance of UPVC pipes are not good. Therefore, hot and cold water pipes are rarely used (only cold water can be used, it is not good for hot water, and it is very easy to brittle in winter). Chemical additives that make PVC softer have an effect on the human body.

The heat resistance of UPVC pipe is poor, and the tensile strength of the environment decreases above 60 (suitable for domestic sewage with a continuous discharge temperature of no more than 40 and an instantaneous discharge temperature of no more than 80).

PVC silencing pipes, with solid walls and hollow ones.

With the development of the times, PVC water supply pipe fittings to replace the traditional ordinary drainage cast iron pipe has been the general trend, but the drainage noise of ordinary PVC water supply pipe fittings is about 10db higher than the traditional cast iron pipe, if the drainage riser is close to the bedroom, and the sound insulation effect of the cast-in-place floor slab is poor, the residents can clearly feel the noise of the PVC water supply pipe, affecting people's normal rest. When arranging sanitary appliances, try to keep the drainage riser away from the bedroom and living room, and consider new noise reduction products for pipes. Core foam U pipes and U spiral pipes can significantly reduce noise, and a new super quiet PVC water supply pipe on the market is added with special sound-absorbing materials, which are lower than drainage cast iron pipes.

Comparison of noise levels of various pipes (110mm): 58db for U pipes; cast iron pipes; Super Silent PVC Water Supply Pipe 45db. (The test site is located one meter from the pipe, the discharge is 42dB, and the ambient noise is 42db.)

After testing, the noise of UPVC water supply pipe is 2 to 3 decibels larger than that of cast iron PVC water supply pipe at the bottom layer, and does not exceed the national standard for domestic noise, but why do users react more on this issue? One of the reasons is that people have a process of adapting to the new environment, and the sound of newly built buildings is amplified by the echo effect of empty houses; Second, the technical measures adopted in the design are not thorough. When designing, try to keep the drainage riser away from the living room and living room.