Borehole Casing in Zimbabwe: Differences Between Class 9 and Class 10

Borehole Casing in Zimbabwe: Differences Between Class 9 and Class 10

Borehole drilling is a critical process that is necessary for accessing groundwater for various purposes. It is a common practice in Zimbabwe, especially in rural areas where access to clean water is limited. When drilling a borehole, one of the crucial aspects to consider is the casing. A casing is a protective barrier that is installed inside the borehole to prevent it from collapsing and prevent contaminants from entering the borehole. In Zimbabwe, two types of casing are commonly used, Class 9 and Class 10. In this article, we will explore the differences between Class 9 and Class 10 borehole casing.

What is uPVC?

Before diving into the differences between the classes, let's take a quick look at uPVC. uPVC is a thermoplastic material that is durable, lightweight, and resistant to corrosion, making it an ideal material for borehole casing. It is also easy to install, making it a popular choice for borehole drilling companies in Zimbabwe.

Class 9 Borehole Casing

Class 9 borehole casing is the most commonly used type of casing in Zimbabwe. It is made of unplasticized polyvinyl chloride (uPVC) and has a thickness of 9mm. 

Class 9 borehole casing has several advantages. First, it is lightweight, making it easy to transport and install. Second, it is corrosion-resistant, which means it can withstand harsh environmental conditions. Third, it is affordable, making it a popular choice for borehole drilling projects with a limited budget.

However, Class 9 borehole casing has some limitations. It is not suitable for boreholes that are subjected to heavy loads or high water pressure. It is also not suitable for boreholes with a large diameter or a depth of more than 60 meters.

Class 10 Borehole Casing

Class 10 borehole casing is a heavier and thicker type of casing compared to Class 9. It is also made of uPVC, but it has a thickness of 10mm. 

Class 10 borehole casing has several advantages. First, it is stronger and more durable compared to Class 9 casing, making it suitable for boreholes with a larger diameter and depth. Second, it can withstand high water pressure and heavy loads, making it suitable for industrial applications. Third, it has a longer lifespan compared to Class 9 casing.

However, Class 10 borehole casing also has some limitations. It is more expensive compared to Class 9 casing, which means it may not be suitable for borehole drilling projects with a limited budget. It is also heavier, making it more challenging to transport and install.


In conclusion, Class 9 and Class 10 borehole casing are two types of casing commonly used in Zimbabwe. The choice between Class 9 and Class 10 casing depends on the specific requirements of the borehole drilling project, including the depth, diameter, expected loads, and water pressure. Nakiso Borehole Drilling is well-equipped to help you make the right choice for your borehole casing needs.

Nakiso Borehole Drilling: Your Trusted Partner for Safe, Sustainable Water Access

At Nakiso Borehole Drilling, we are your comprehensive partner for unlocking reliable water on your property. Our highly skilled team tackles all drilling projects, from standard boreholes to specialized Blast Hole and RC Drilling. We handle everything in-house for a seamless experience, encompassing expert borehole siting, efficient drilling, and pump installation – solar, electric, or manual – tailored to your specific needs. With Nakiso, your reliable water source is just a drill away.

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Five Facts About Borehole Drilling That You Need To Take Note Of:
1. Know Your Borehole Casings:The Preferred Borehole Casing In Zimbabwe Is Class 9 and 10 (Pressure Classes.)This is because Class 9 and Class 10 Casings are more collapse resistant. The strength of a Casing is often described as collapse resistance.

2. Borehole Drilling Depth: The exact depth, of where the water is located, cannot be established by the drilling contractor nor the Water Surveyor (Borehole Siter).

3. The Is No 100% Guarantee On Water: It is important to note that it is never a 100% guarantee that any hole will yield water, the amount and water quality can also not be guaranteed by the drilling contractor and water surveyor.

4. Borehole Siting or Water Surveying Is Important: Making use of a hydrologist or traditional water diviner will increase your chances of having a successful borehole that will yield a sufficient amount of water.

5. Know The Risks: The risk of the borehole drilling lies with the property owner. The client will still be liable for the drilling costs irrespective of a borehole yielding water or not.

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The Reliable Choice for Borehole Drilling in Zimbabwe

Frustrated with unreliable water access? Look no further than Nakiso Borehole Drilling! Our team of water well experts boasts extensive experience and knowledge, tackling any type of borehole installation you may require.

Worried about the technicalities? Relax – Nakiso Borehole Drilling streamlines the entire process, from the initial step of meticulously selecting the optimal borehole location on your property to the final pump installation. And when it comes to pumps, we offer a variety of options to suit your needs and preferences. Choose from solar-powered pumps, a sustainable and eco-friendly solution, or opt for the convenience of electrical pumps. For those seeking a more traditional approach, manual bush pumps are also available.

With Nakiso Borehole Drilling, you benefit from a comprehensive water solution – all delivered by a single, trusted provider. Let us help you unlock a reliable and long-lasting source of water for your home or business.

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