Sarplast
manufactures and supplies a complete range of GRP products for water
wells.
These include:
- Casings
- Pipe base V-Shaped Screens
- Cut Slot Screens
- Risers
- Well Heads
- Accessories
All our products comply with the Standards for
drinking water issued by the main National Health Organizations.
Benefits of GRP products for water wells
are:
- Long service life thanks to its complete
resistance to corrosion and chemical attacks
- Light weight that will allow easy handling and
installation
- Excellent mechanical properties in terms
of collapse resistance and axial strength
As a result, Sarplast
GRP products are particularly suitable for applications in
aggressive environments (like salt water, high PH and hot mineral
water) and for medium to deep wells.
CASINGS
Sarplast GRP Casings are custom built. They
are designed and manufactured to meet each individual well
requirement and Engineering specification.
The range of dimensions and characteristics is wide. They can be
produced in any diameter from 2 inches up to 50 inches. Standard
lengths are 6 and 12 meters. Customized lengths up to 12 meters are
available on request.
It should be noted that GRP Casings have Outer Diameter and Inner
Diameter slightly different from steel Casings of the same nominal
size.
GRP casings are particularly suitable for aggressive environments
(salt water, high PH and hot mineral water) thanks to its complete
corrosion resistance and for medium and deep wells thanks to its
excellent mechanical properties. Our GRP Casings can be installed up
to 2000 meters of depth.
On the outer layer of the casings a special sand coating can be
applied, upon request, to improve the bonding of the cement to the
external surface of the casings.
The joint is a
Bell and Spigot with Double O-ring Lock Joint. This joining
system is very easy and can reduce installation time up to 50%.
PIPE BASE
V-SHAPED SCREENS
Sarplast GRP pipe base screens represent an
innovative solution for the water wells field.
They are similar to steel continuous slot screens and couple the
advantages of GRP products (corrosion resistance, easy handling and
low weight) with the advantages of continuous slots screens
(no-clogging and high open area).
The fiberglass pipe base screen is made of a perforated pipe, which
assures optimal mechanical properties, and an external screen jacket
with smooth and tapered slots which assures the desired filtering
properties. The slot sizes can be between 0.5 mm and 2.0 mm and can
give high open areas.
The trapezoidal slots have been designed to avoid any possible
blockage of the screen. It is important to remark that the GRP
surface, thanks to the smooth finish (on microscope scale) and to
the absence of any corrosion phenomena, does not allow the formation
of incrustation. Therefore only a very limited reduction of open
area will occur during the entire service life of the screen.
As for the casings, these screens are custom made to give the
desired Collapse Resistance.
CUT SLOT SCREENS
Cut Slot Screens represent a more economical solution
and are suengble for shallow and medium depth applications. The
slots in these screens are obtained by cutting with a saw directly
the pipe wall.
Compared to PVC filters, they have a much lower wall thickness and
therefore less clogging problems.
The number and dimensions of the slots can vary with pipe diameter
and clients' needs. The slot size can vary between 1 mm and 3.5 mm.
In any case they assure at least a minimum open area of 10%.
As for the casings, these screens are custom made to give the
desired Collapse Resistance.
RISERS
These pipes have been designed and
manufactured to withstand high axial loads and torsional forces. The
bell and spigot joint, provided with a specific design to prevent
rotation, is ideal to be assembled and dismantled many times to
allow the maintenance of the pump (without any deterioration of its
ability to seal and carry axial and torsional loads). This solution
is very efficient compared to the flanged and threaded joints.
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