Borehole casing pipe – uPVC

Everything you need to know about Borehole casings / Borehole pipe casing

Borehole casing pipe - PVC

We offer a full line of PVC well screens, risers, casings, drop pipe, fittings, and accessories, as a long lasting alternative to steel.

We offer both plain and slotted u-PVC Borehole casings.

PVC is economical, lightweight, durable, and customizable, making it an ideal solution offers a number of advantages over metal screens including custom
design flexibility, lightweight, and durability, making it an ideal solution for a number of applications including:

  • Water wells
  • Monitoring wells
  • Vapor extraction wells
  • Groundwater extraction wells
  • Air or oxygen sparing
  • De-watering
  • Heavy metals sampling
  • Mining

Pricing

OD (mm) Length (m) CLASS TYPE PRICE
110 6m 6 Solid, Socket end R 270
110 6m 9 Solid, Socket end R 360
125 6m 6 Solid, Socket end R 330
125 6m 9 Solid, Socket end R 662
165 6m 6 Solid, Socket end R 694
165 6m 9 Solid, Socket end R 1192

** Please contact our sales team for discounts offered on volumes. **

 

Also known as Borehole Casing Pipe

What are borehole casings used for?

The casings gives structural integrity to the wall of the well so that it does not collapse by controlling the movement of rock fragments, sand and gravel. It also works as a cover for the water transfer pipes, safety rope, electrical wires as well as the pump itself. The casing also helps with ensuring that surface water and shallow ground water (which might be polluted) do not mix with the ground water.


Borehole Casings | Plasco Limited

Joining borehole casings

They are made in sections which are screwed together to form longer lengths. Each casing has a male and female threading to ensure it is able to be connected to the next pipe section. Most often the male threads are covered with a thread protector (before assembly) to prevent any damage on the threads.


Six ways to fix up a well and get clean water | Oxfam

How deep should the Borehole Casing Pipe be?

Since the casing is mainly used for protection, its depth should be able to provide the necessary protection. As a rule of thumb, the casing should - at minimum be 6m deep. It should also be at least 2m below the pump. This protects the pump from the wall collapse whilst also preventing mud and sand from entering into the pump.


How to choose a borehole pipe casing

Technically Speaking: Boreholes - WWT

What should my Casing diameter be?

The diameter of the borehole casing should be enough to fit the pump and clearance enough to cater for easy installation and maintenance.

How long should the Casing Pipe be?

In unstable aquifers it would be advisable to have the casing equal to the depth of the borehole. Where there are rocks - depending which one is greater - casings should be a depth of 20m minimum, below the ground or 10m into the bedrock.


Oil well sand control screen - Guangxing water well screens

Steel or PVC Well Casing?

Over the years(20th Century) steel has been the go to choice for well casings, lately, with improvements to PVC, it has been the most common choice for casings. However, it has to be noted that the choice of material depends on a number of things, such as: cost, governing standards, installation criteria and equipment being used to construct the well. The chemistry of the water and the geology are also important factors. The pH level too is an important factor, high(alkaline) or low(acidic) levels corrode steel on the other hand PVC is chemically inert. Steel again, is not ideal in conditions with high levels of salts, the
steel may be corroded by processes such as electrolysis.


Care for Casings

Extreme care is required when installing casings, casing material may crack due to excessive bending when subjected to compressive or tensile stresses. Damaged casings means the well’s structural integrity has been reduced, as a result, maintenance of equipment or installing equipment will not be an easy ask.


Our popular U-PVC borehole casings

Our unplasticised polyvinyl chloride (U-PVC) borehole casings are manufactured according to IS12818 1 and DIN 4925 2 standards by precision German Engineered, CNC machines.


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Benefits of U-PVC casings

Borehole rehabilitation costs are minimized, as U-PVC screens are inherently more resistant than conventional steel products to clogging and encrustation. U-PVC also outperforms stainless steel in highly corrosive environments, at a fraction of the cost. These physical characteristics makes it the ideal product to use in water supply boreholes, and especially environmental monitoring boreholes in corrosive environments. U-PVC borehole casings and screens come in 2.9m lengths currently supplied in four diameters with threaded flush joints. Threaded or push-on end caps are also available.