Hollow spiral hush pipe Specification dn75-dn160 Standard:
GB,DIN,JIS,BS Certificate: ISO9001
|Ring stiffness||S1≥4KN/square meter, S2≥8KN/square meter|
|Ring flexibility||Test sample should be smooth, no reversed flexure , no crack, no
no air bubble, no delamination, no crack, no stratification
PVC-U hollow-wall inner spiral noise reducing pipe is manufactured
by using polyvinyl chloride resin as main raw material and adding
necessary additives to kneed and extrude forming. This product
changes an unordered mode of traditional gravity drainage to an
ordered mode of ratory influent, spiral diversion and respective
discharges of water and vapour, in this way, it can be forcibly
achieved that water flows in water film along pipe wall so as to
reduce water flow velocity, reduce the resistance coefficient of
water tongue, depress water noise of impacting pipe. Studies show
that the noise power of PVC-U spiral silencing drainage pipe is
only 30% to 50% of common PVC-U drainage pipe while the water
throughout capacity is also greatly enhanced, and the pipe is
provided with multiple effects.
1. Noise reducing effect is better; th soundproof effect of PVC-U
hollow-wall inner spiral noise reducing pipe is especially obvious,
and the noise level reduced by this product is lower 8 to 10 dB
than one by standard soild wall pipe, the noise generated is
effectively kept within limits during sewage discharge.
2. Water flowing is more clear and center air nucleus is kept
interpenetrating from top to bottom in standpipe where the pressure
fluctuation is stablized, the positive and negative changes of air
pressure are in 20mm to 40mm H2O, the air quantity is decreased
about 15% to 20%, and the discharge capacity is increased about 25%
to 35%. The usual negative pressure suction and positive pressure
splash are effectively reduced so as to ensure the liquid seals of
sanitation equipments not to be damaged.
3. Firmness is good. Because there is clear air column in pipe, the
pressure fluctuation is reduced in pipe, and the safety coefficient
is improved in use of pipe, six triangular spiral ribs on inside
wall of pipe are provided with remarkable reinforcement effect, and
can effectively reduce the break phenomenon of pipe resulting from
impact of external force.
4. This product is provided with all advantages in performance of
PVC-U solid wall pipe, and with good mechanical property, good
corrosion resistance, environmental protection and long service
a. Water Project: water supply and irrigation pipe.
b. Municipal Project: buried underground drainage, discharge pipe.
c. Construction: Apartments, houses, gardens rain pipes, underground sewage pipes
and ventilation pipes.
d. Telecom Cable: telecom cable and optical cable protection pipe.
e. Industrial: widely used as industrial sewage pipes.
f. Agricultural: farmland irrigation, orchards, tea plantations and forest belt
irrigation and drainage.
g. Road: railway, highway seepage, drainage, discharge pipe.
h. Mining Industry: mine ventilation, air supply, drainage, mud pipeline transport.
i. Stadium: golf course, football field, square infiltration, drainage and
j. Wharf & Airport: storm sewer discharge pipe.
k. Environmental Protection: landfill sewage water collection pipe, waste treatment plant
Water storage system, a water storage system.
Drainage pipe network of public facilities and residential area.
Irrigation and drainage pipe network of farmland.
Drainage pipe network of chemical plant and sewage treatment plant.
Low- pressure liquid transmission of chemical plant and mine, mine
ventilation and drainage pipe network.
Protective pipes for optical fiber cable and electric cable.
Hollow pvc-u pipe/pvc spiral hush pipe picture