Stainless Steel Mirror Polished Sphere Hollow Round Ball Garden Decor
Hollow stainless steel spheres pressed from AISI 201, AISI 304 or AISI 316 sheet and seam welded into a closed form. Wall thickness ranges from 0.6 mm to 6 mm and diameters from 19 mm to 4000 mm, so the same part serves as a floating pond feature, a garden focal point, or a large-scale public art installation. The hollow construction keeps even the largest spheres light enough for two people and a trolley to handle, and the mirror finish holds its reflection without repainting. All welding is ground to an invisible joint and polished to a high gloss before delivery.
Key Benefits
- Hollow construction keeps large diameters light enough for two people and a trolley to lift and set
- Mirror polished 304 and 316 hold their reflection outdoors without repainting or fading
- Wall thickness selectable from 0.6 mm to 6 mm so cost follows the load case not a fixed catalogue
- Drilled, tapped and pedestal welded before polishing so no site fabrication is needed
- Watertight and floatable, so the sphere can be used in ponds and water features
- Any diameter from 19 mm to 4000 mm is possible, not limited to standard sizes
Problems It Solves
- Cast or solid spheres get too heavy to install once you pass about half a metre
- Painted mild steel spheres rust at the seam and need repainting every few seasons
- Buying spheres in several diameters from several suppliers gives visibly different polish
- Site drilling a finished mirror sphere scratches the surface and voids the finish
- Small suppliers cannot press anything above one metre so large schemes stall
- Non-watertight metal balls sink or leak in water features
Application Scenarios
Floating spheres in garden ponds and water features where a sealed steel float is required
Focal points in modern public parks, plazas and campus courtyards
Reflective spheres in hotel lobbies, office atriums and retail concourses
Cluster installations where dozens of spheres in graded diameters form one artwork
Garden decor in private villas and high-end residential landscapes
Modern architectural accents on building facades and rooftop terraces
Who It Is For
- Landscape architects specifying a reflective element in a planting or water scheme
- Public art commissioners needing a durable, low-maintenance sculpture for a city square
- Hotel and interior designers wanting a high-gloss modern accent in a lobby or atrium
- Property developers installing consistent garden decor across multiple units
- Garden centres and outdoor decor importers buying custom diameters by the container
- Film and VFX studios needing HDRI reference balls with a perfect mirror finish
Technical Features
- Two hemispheres stamped or formed by mould pressing, then seam welded and ground to an invisible joint
- AISI 201 for indoor or low-exposure use, AISI 304 for general outdoor, AISI 316 for coastal or pool chemistry
- Wall thickness from 0.6 mm to 6 mm, with spinning process available for the thickest option
- Drilled, tapped and pedestal welded before final polish so no site work is needed
- Mirror polished through progressive grits, with seam ground until no reflection shows
- Watertight and floatable due to sealed seam and full welding process
Specifications and Materials
| Material | AISI 201, AISI 304, AISI 316 stainless steel |
|---|---|
| Diameter Range | 19 mm to 4000 mm |
| Wall Thickness | 0.6 mm to 6 mm |
| Forming Method | Mould pressing, water pressure forming, spinning |
| Standard Finish | Mirror polished |
| Optional Finishes | Vacuum metallising, electroplating, transparent candy colour spray |
| Secondary Operations | Drilling, metric and unified thread tapping, pedestal welding |
| Lead Time | 15 to 30 days after deposit received |
| Packing | Soft foam plastic inside, strong wooden or iron case outside; wooden stands for large pieces |
| Payment Terms | T/T, 50% deposit and 50% balance before shipping |
| Place of Origin | Shenzhen, China |
| Size Range | Customised to any size |
Materials
- AISI 201 stainless steel, suitable for indoor or low-exposure outdoor use
- AISI 304 stainless steel, standard for general outdoor gardens, parks and interiors
- AISI 316 stainless steel, specified near the coast, near pools and near de-icing salt
- Carbon steel, available on request where the ball is fully coated or used inside a closed system
Customization
- Any diameter between 19 mm and 4000 mm, not only the sizes shown
- Wall thickness chosen for the load case rather than a fixed default
- Thread holes, blind holes and drain holes positioned to your drawing
- Welded pedestal, spigot, flange or base plate for the fixing you already have
- Colour matched candy finishes and two tone spheres
- Graded sets where every sphere in a run shares the same polish batch
How It Is Made
- Step 1Sheet cut and blanked to the diameter and thickness on the order
- Step 2Hemispheres formed by mould pressing, water pressure forming or spinning
- Step 3Halves fitted and seam welded into a closed sphere using hand welding
- Step 4Weld ground and blended until the joint no longer reads in reflection
- Step 5Holes drilled and threads tapped, pedestal or base plate welded on
- Step 6Mirror polished through progressive grits, or brushed or matt finished
- Step 7Optional vacuum metallising, electroplating or candy colour spray
- Step 8Protective film applied, foam wrapped and cased
Quality Control and Use
Quality Control
- Seam checked in reflected light because a mirror finish shows any flat spot on the weld
- Diameter and wall thickness checked against the order before polishing starts
- Thread holes gauged for pitch and depth after tapping
- Finished spheres kept under protective film until they are packed
- Photographs of the finished batch sent for approval before the balance is invoiced
Use Guide
- Give the diameter, wall thickness, finish and fixing type when you ask for a price
- Send the base or plinth detail so the pedestal is welded in the right place
- Specify 316 if the sphere sits within a few hundred metres of salt water
- Leave the protective film on until the sphere is bolted down and the site is clean
- Wash with clean water and a soft cloth, never a wire brush or a chloride cleaner
Compared With The Alternatives
| Alternative | How this product compares |
|---|---|
| Cast or solid steel spheres | Much lighter for the same diameter, so installation needs less lifting plant, but a hollow ball is not a load bearing element |
| Painted mild steel spheres | No repainting cycle and no seam rust, at a higher first cost |
| GRP or acrylic spheres | Real specular reflection and no yellowing outdoors, but heavier and slower to produce |
| Stainless steel hemispheres | A closed sphere reads as a complete form, while a hemisphere is cheaper when it sits against a wall or floor |
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View DetailsGuides That Help You Specify This
AISI 304 vs 316 Stainless Steel for Outdoor Sculpture
When 304 is enough, when 316 earns the extra cost, and why chloride rather than rain is what actually attacks a polished surface.
How to Choose Wall Thickness for a Stainless Steel Sphere
What 1 mm, 2 mm and 6 mm walls actually change, and why thickness is a handling decision more than a strength one.
Mirror Polishing Explained for Stainless Steel Sculpture
Why the quality of a mirror finish is decided during welding and fixing, long before the piece reaches the polishing shop.
Questions About Stainless Steel Mirror Polished Sphere Hollow Round Ball Garden Decor
What is the largest diameter you can make?
4000 mm on custom tooling. There is no fixed step between 19 mm and 4000 mm, so intermediate sizes cost the same as round numbers.
How long does an order take?
15 to 30 days after the deposit is received. Large mixed diameter orders that need several polish batches sit at the top of that range.
Should I use 304 or 316?
304 is fine for inland gardens, parks and interiors. Choose 316 for coastal sites, pool surrounds and anywhere de-icing salt is used.
Can you drill and tap the ball before it is polished?
Yes. Send the hole positions with the order. Drilling a finished mirror sphere on site scratches the surface, so all holes are made before final polish.
How are the spheres packed for sea freight?
Soft foam plastic against the surface, then a strong wooden or iron case. Large spheres are cradled on a wooden stand inside the case.
What are the payment terms?
T/T with 50% deposit and 50% balance before shipping. Photographs of the finished batch are sent before the balance is invoiced.
Get a Price on Stainless Steel Mirror Polished Sphere Hollow Round Ball Garden Decor
Send the size, finish and fixing you need and we will come back with a price and a lead time for Stainless Steel Mirror Polished Sphere Hollow Round Ball Garden Decor.