Coiled Pipe
32 mm or 40 mm coiled water pipe from a borehole to a tank?
Will 32 mm pipe be enough to carry water from the borehole to the tank, or is 40 mm needed? Distance alone cannot answer that question. Required flow, elevation and the connections along the route also affect the choice.
Quick answer
32/10 and 40/10 refer to different outside diameters; /10 is the catalogue’s 10 ATÜ class. At the same flow, a larger actual bore can help reduce line losses. That does not make 40 mm essential for every job or 32 mm adequate at every distance. Select the pipe using the pump and line information together.
32/10 and 40/10 comparison
| Selection point | 32/10 blue pipe | 40/10 blue pipe |
|---|---|---|
| Catalogue outside diameter | 32 mm | 40 mm |
| Catalogue class | 10 ATÜ | 10 ATÜ |
| Diameter needed for calculations | Verify the actual inside diameter | Verify the actual inside diameter |
| Compression fitting | Compatible with 32 mm OD and this pipe | Compatible with 40 mm OD and this pipe |
| Decision criterion | Are the required flow and line loss acceptable? | Does the larger passage offer a useful benefit for this route? |
This comparison covers distribution after the wellhead
This guide concerns water carried from the well outlet to a tank, garden or field distribution point. Well casing, a load-bearing pump riser and electrical conduit serve different purposes. Do not substitute blue coiled pipe for them based on colour or a product nickname.
If an existing system has lost flow, first follow the submersible pump low-flow checks. A larger pipe will not by itself remove a blockage or restore a falling water level.
What do 32/10 and 40/10 mean?
For these products, 32 and 40 describe the outside diameter in millimetres. Water passes through the smaller bore left inside the pipe wall. Do not enter the outside diameter into a field asking for inside diameter. Use a verified product dimension for the hydraulic calculation.
/10 denotes the catalogue’s 10 ATÜ class. It does not mean a ten-metre pumping distance or the same permissible pressure under all conditions. Temperature, pressure changes, fittings and the product’s technical conditions still matter. Colour does not establish a PE80, PE100, MDPE or HDPE material grade.
When should a larger diameter be considered?
A long route, high water demand or planned additional branches may justify examining a larger bore. For the same flow, increasing the actual bore reduces velocity and changes friction losses. The useful benefit cannot be quantified without the real pipe dimensions and a review of the whole route.
A rule such as “32 mm up to 100 metres, then 40 mm” misses the operating conditions. Two 100-metre lines can have different flow, elevation and valves. Use the pipe-diameter calculator for an initial assessment, checking the requested bore and units. Final selection also considers the pump curve, pressure needed at the outlet and the well conditions.
Do not leave restrictive fittings in an enlarged line
A small-passage adapter before 40 mm pipe, or a narrow valve after it, may limit the expected benefit. List the transitions from pump outlet to tank inlet. Select compression fittings for the pipe’s outside diameter and distinguish any threaded inch connection from the pipe size.
Review the compression fitting range. Do not force a larger pipe into an existing smaller fitting. Where a change of size is needed, use a suitable transition fitting. Follow the selected fitting’s instructions for pipe preparation, seals and tightening.
Compare complete coils and the whole line cost
Compare prices using the same length and tax basis. The list values below are generated from the current product data and exclude fittings, delivery and installation. As cut-length sales are not offered, plan the number of complete coils and total installed length separately.
| Product | Coil | Per metre / excl. VAT | Full coil / incl. VAT |
|---|---|---|---|
| 32 mm · 10 ATÜ Blue Polyethylene Pipe | 100 m | 33.00 TRY | 3,960.00 TRY |
| 40 mm · 10 ATÜ Blue Polyethylene Pipe | 100 m | 49.00 TRY | 5,880.00 TRY |
List period: 28 July 2026 — 31 December 2026. Turkish VAT rate: 20%. Fittings, delivery and installation are not included.
A lower initial pipe price does not always produce the lowest project cost. Connections, appropriate line design and operating conditions also matter. Conversely, a larger size without a demonstrated need can add unnecessary expense. Compare the blue coiled pipe range on equivalent terms.
Confirm five points before ordering
- Pump model and required flow.
- Actual route length and elevation difference.
- Required outlet pressure or the tank filling arrangement.
- Verified bore/product class and the fittings, valves and elbows.
- Present demand, planned expansion and delivery location.
Use those details to request comparable proposals for 32/10 and 40/10. Check coil length, continuous installed runs, transitions and the installation plan together before choosing.
For dripping joints, use Poly pipe joint leaking? Check the compression fitting and seal.
Related products
32 mm · 10 ATÜ Blue Polyethylene Pipe
32 mm outside diameter, catalogue class 10 ATÜ; see coil and list-price information on the product page.
40 mm · 10 ATÜ Blue Polyethylene Pipe
40 mm outside diameter, catalogue class 10 ATÜ; assess it with fittings and the line calculation.
Frequently asked questions
What does the 10 in 32/10 pipe mean?
It denotes the catalogue’s 10 ATÜ product class, not line length or water delivery. Suitability still depends on the product’s technical conditions and the system.
Will 40 mm pipe definitely deliver more water than 32 mm?
A larger actual bore may reduce line losses, but the pump and system determine the operating flow together. A fixed percentage improvement or guaranteed flow cannot be stated.
Can 32 and 40 mm pipe use the same coupling?
A single equal-size coupling should not be assumed to fit two different outside diameters. Use a purpose-made transition compatible with both sizes when a reduction is needed.
Can blue coiled pipe support a pump as a borehole riser?
This guide covers the distribution line. Suspended loads, depth, connections and pressure inside a well require separate assessment. Do not assign that role without documented product suitability.
Two related guides
Submersible pump running with low flow
Separate restrictions, leaks and water-level issues before changing diameter.
Pump outlet and hose bore compatibility
Distinguish pipe OD, hose ID and threaded connections when choosing fittings.
Request a quote with your product and size
Include the product size, coil count, line length and delivery location so we can review a suitable option.
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