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HELIDUR-SPIRAL
LARGE BORE HELIDUR SPIRAL SEWER PIPES
MADE OF uPVC or HDPE |
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| MATERIAL |
The HELIDUR-SPIRAL
pipes are manufactured by extrusion and continuous wounding of specially
designed profiles upon a mandrel. The diameter can be varied from
600 mm up to 1500 mm and more.
The profile wall construction produces superior ring stiffness properties
and mechanical resistance to external loading. The moment of inertia
can be magnified significantly in comparison to solid wall pipes.
This means for practical use that:
 with
the same input of material volume the stiffness of the pipe can be
increased, and
for
the same output of stiffness a resistance to external loading the
material input can be degreased to 40% of the comparable solid - wall
pipe construction
Material savings are a major advantage of the light weight HELIDUR
SPIRAL pipes which in combination with their smooth internal and external
surface facilitate handling, transport and installation. Costs for
transportation can be reduced, installation equipment may be lighter
and job site handling during installation is easier and more effective.
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TECHNICAL
FEATURES |
Chemical
and Corrosion Resistance.
Can
be used in temperature range about -10īC up to 60īC
A
conventional integral socket with a groove can be formed at the PVC
HELIDUR SPIRAL pipe and a chamfer at the spigot end to attain joining
in the same way as in solid wall PVC pipes. Water tightness is ensured
by the incorporated sealing ring seated against the groove. A special
coupling can also be used for the connection of HELIDUR SPIRAL pipes.
This coupling consists of a stainless steel casing with stainless
steel bolts and a high quality synthetic rubber sealing sleeve. For
HELIDUR SPIRAL pipes made of HDPE the butt fusion welding method can
also be used. Butt fusion is probably the simplest method of joining
pipe. It consists of heating adjoining pipe ends until the polymer
softens and pressing the softened ends together. This allows the polymer
to flow together resulting in a continuous pipe without a joint. The
join strength is completed when the softened portion cools. |
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APPLICATIONS |
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As
central collectors for the sewage networks of a town or an industrial area.
As
storm drain pipelines.
As
pipelines for the conveyance, far into the sea, of wastes in the above mentioned
cases and also in big hotels.
As
gravity flow pipelines for the irrigation of large areas.
HELIDUR
SPIRAL made of HDPE can also used for the relining of a defective old pipeline.
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NOMINAL
DIAMETER |
MATERIAL |
SERIES |
WALL
THICKNESS |
WEIGHT |
D(mm)
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S(mm)
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kN/m2 |
S(mm)
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G(kg/m) |
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uPVC
100
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4 |
24,5 |
38,0
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| 600 |
HDPE |
4 |
26,1 |
32,0 |
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uPVC
100
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4 |
23,0 |
50,0 |
| 800 |
HDPE |
4 |
35,5 |
50,0 |
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HDPE |
2 |
26,1 |
42,0 |
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uPVC
100
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4 |
30,0 |
68,0 |
| 1000 |
HDPE |
2 |
35,0 |
62,0 |
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uPVC
100
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4 |
37,0 |
98,0 |
| 1200 |
HDPE |
2 |
42,5 |
90,0 |
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HDPE |
1 |
35,0 |
75,0 |
| 1500 |
HDPE |
2 |
50,5 |
150 |
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