PVC-U Well Casing & Screen Pipe

PVC-U well casing pipes are rigid, high-strength plastic pipes installed in drilled wells to prevent the surrounding soil or rock from collapsing into the borehole.

PVC-U screen pipes are similar but feature precision-cut slots or machine-made perforations that allow groundwater to enter the well while filtering out sediment.

Advantages

Excellent Corrosion Resistance

Unlike metal pipes, PVC-U does not rust, scale, or corrode, even in aggressive groundwater containing salts, acids, or alkaline compounds.

Lightweight & Easy Installation

PVC-U is significantly lighter than steel or stainless steel, making:Transport easier；Installation faster；Deep-well handling simpler (less heavy equipment needed)

Cost-Effective

PVC-U systems are generally much more affordable than metal alternatives, both in material cost and installation labor.

Smooth Internal Surface

The smooth bore reduces friction losses and helps maintain higher pumping efficiency over time.

Chemical Stability & Non-Toxicity

PVC-U does not leach harmful metals into water, making it suitable for:Drinking water wells；Irrigation wells；Monitoring wells

Long Service Life

With proper installation, PVC-U well casings can last decades due to resistance to chemical and biological degradation.

Precision Slotting (Screens)

PVC-U screens can be manufactured with uniform slot sizes, improving:Sand control；Aquifer protection；Flow efficiency

• Groundwater extraction wells
• Agricultural irrigation wells
• Municipal water supply wells
• Observation and monitoring wells
• Dewatering systems in construction
• Environmental sampling boreholes

1. What is PVC-U well casing and screen pipe used for?

PVC-U well casing and screen pipes are used in groundwater wells to support borehole walls and allow clean water entry while filtering out sand and debris. They are commonly used in irrigation, drinking water, and monitoring wells.

2. Why is PVC-U better than steel for well casingpipes?

PVC-U well casing is preferred over steel because it is corrosion-resistant, lightweight, cost-effective, and does not rust or contaminate groundwater, making it ideal for long-term water well applications.

3. How long do PVC-U well casing and screen pipes last?

PVC-U well pipes typically last 20–50 years or more, depending on soil conditions, groundwater chemistry, and installation quality. Their resistance to corrosion significantly extends service life.

4. What sizes are available for PVC-U well casing pipes?

PVC-U well casing and screen pipes are available in a wide range of diameters, commonly from small domestic wells (2–6 inches) to large municipal and industrial wells (up to 16 inches or more).

5. Are PVC-U screen pipes suitable for drinking water wells?

Yes, PVC-U screen pipes are widely used in potable water wells because they are non-toxic, do not leach chemicals, and maintain water quality standards required for drinking water systems.

6. How does a PVC-U well screen prevent sand from entering the pump?

PVC-U well screens use precision-cut slots that allow water to flow in while blocking sand and fine particles. Slot size is selected based on the aquifer’s grain size to ensure proper filtration.

7. Can PVC-U well casing be used in deep wells?

Yes, PVC-U well casing can be used in moderate to deep wells, but depth limits depend on pipe class, wall thickness, and groundwater pressure. For very deep or high-stress wells, steel may be required.

8. What is the difference between PVC-U casing pipe and screen pipe?

PVC-U casing pipe is a solid pipe used to stabilize the borehole, while PVC-U screen pipe has slotted openings that allow groundwater inflow while filtering sediment.

9. Where can I buy PVC-U well casing and screen pipes near me?

PVC-U well casing and screen pipes are typically available from water well suppliers, irrigation equipment distributors, and borehole drilling companies. Local availability depends on regional groundwater drilling markets.

10. How is PVC-U well casing installed in a borehole?

PVC-U casing is installed after drilling by lowering pipe sections into the borehole, connecting them via threaded or solvent-weld joints, and placing screen sections in the aquifer zone before backfilling with gravel pack.