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  Fiberglass Benefits
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  Casings, Screens & Risers for Water Wells
  Pipes & Fittings for Shipbuilding
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  Relining
  Pipe Bursting
  Jacking Pipe
  Machines and GRP Pipes production lines

 

 
 
Pipe Base
 
 
Risers
 
Accessories
 
 

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.

 

Nominal
Diameter

Internal Diameter (mm)

Wall Thickness (mm)

Joint External Diameter (mm)

String Weight (Kg)

DN

ID

t

Joint OD

L=1 m

L=3 m

L= 5,8 m

50

50

6,2

71

3,0

7,1

12,9

80

80

6,3

101

4,7

11,5

21,1

100

100

6,3

122

5,9

13,7

24,7

150

150

6,3

172

9,7

21,2

37,5

200

200

6,3

259

12,6

27,8

49,4

 

ACCESSORIES

Sarplast can provide the complete GRP well head, giving a corrosion proof system even for this "critical element" and assuring a long service life. Well heads are supplied prefabricated according the sketches required by the clients.
Sarplast can provide also the following accessories:

  • GRP Float Shoes and Float Collars
  • GRP DPOB (Drillable Pack Off Bushing)
  • GRP Cross Overs or Reducers
  • GRP Top Flanges
  • Adaptors (threaded components to Bell and Spigot Lock Joint)
  • Liner Hangers
  • Kwik-Zip® Centralizers
 

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Sarplast SA - 1, Via S. Pietro Pambio - 6900 Lugano Paradiso - Switzerland