Round steel pools

Round steel pools offer structural durability of up to 15 years thanks to their continuous cold-rolled galvanized steel wall, outlasting the typical lifespan of tubular liner pools. Their circular design distributes water pressure evenly around the entire perimeter without creating localized stress points.

In addition to mechanical strength, this system includes specific protective features:

• Sheet metal treated to resist corrosion and environmental rust.
• PVC liner with ultraviolet treatment to prevent sun damage.
• Lower and upper slotted profiles that securely lock the structure in place.

To ensure optimal filtration from the first fill, we recommend connecting a Star 300 sand filter with pump suited to the required recirculation flow rate.

Installing round steel pools requires ground that is perfectly smooth, firm, and level, and a reinforced concrete base at least 10 centimeters thick or prior excavation and compaction of the soil. Never install the pool on filled or uneven ground, as the water will concentrate the load on one side and permanently deform the metal sheet.

To protect the interior floor from accidental punctures:

• Remove stones, roots, and sharp objects from the circular perimeter.
• Spread a 2 cm layer of sifted sand or lay down a rot-proof geotextile felt underlay.
• Form a small inner perimeter sand bevel at the base to support the liner’s lower curve.

If the pool liner is rubbed against during assembly, the Starpool liner repair kit lets you repair leaks without having to dismantle the pool.

The PVC liner of a circular steel pool requires maintaining a pH between 7.2 and 7.6, along with a free chlorine level of 1 to 2 ppm, to prevent discoloration and premature drying. Never pour chemical tablets directly onto the bottom, as concentrated chlorine can bleach and crack the vinyl membrane within a few hours.

Always use floating products or skimmer dispensers to ensure gradual, continuous disinfection. If the water loses clarity due to heavy use or summer rains, combine regular chlorination with a stabilizing product such as ULTRA CLEAR super clarifier, 1 L. PM-643. Piscimar. to clump suspended microparticles so they settle onto the sand bed.

The actual difference in usable water depth between a 120 cm-high model and a 132 cm-high one is approximately 10 to 12 centimeters of effective depth. The operating waterline never reaches the upper metal edge; it is always halfway up the skimmer to allow water to flow continuously into the suction circuit.

A standard circular model with a diameter of 350 cm and a height of 120 cm holds about 10,100 liters of water, while the 132 cm version holds approximately 11,250 liters. This extra height is ideal for adult users, although it increases the energy consumption of filtration and requires checking that the base can support a load of over one ton per square meter.

Water circulation and cleaning in circular structures are achieved by channeling the surface layer toward a die-cut opening in the sheet metal that houses the pre-filter basket. The return nozzle should be angled diagonally to create a gentle centrifugal current that moves suspended debris directly toward the suction inlet.

To equip the steel wall with compatible official fittings that provide a secure watertight seal, use Gre's Skimmer + AR100 inlet nozzle replacement kit, designed to seal tightly against the PVC liner with a double gasket.

Yes, circular steel pools are designed to remain outdoors all year round and should never be completely emptied at the end of summer. The water inside acts as an essential stabilizer against wind and counteracts the lateral pressure of the ground in partially buried models.

To ensure proper winterization and prevent damage to the steel wall or pipes from frost:

• Lower the water level to just below the skimmer and drain the exterior flexible pipes.
• Disconnect the filter pump and empty the sand filter tank to prevent frost damage.
• Add a winterizing chemical treatment to the water before covering the surface.
• Install a securely anchored, opaque winter cover to prevent photosynthesis and keep out debris.

Allow an additional clear strip of at least 1 meter all the way around the pool's diameter. Although the circular design has no protruding stabilizing legs that take up extra space, the technical team needs this perimeter walkway to unroll the steel wall, tighten the vertical joining bolts, and install the top rails without obstructions.

This clearance also ensures adequate separation from walls or enclosures that could prevent technical access to the skimmer and filter connections during the swimming season.