Colourful Metal Garden Ball Stainless Steel Hollow Sphere Sculpture
Hollow stainless steel spheres formed from AISI 304, AISI 316 or AISI 201 sheet, welded into a watertight sphere with an invisible seam. Available in diameters from 19 mm to 4000 mm and wall thickness from 0.6 mm to 6 mm. Mirror polished for a reflective surface, with optional transparent candy colour spray, vacuum metallising or electroplating. Designed for outdoor and indoor use, the sphere floats in water and resists corrosion and thermal damage. Fabricated to order in Shenzhen, China.
Key Benefits
- Watertight construction allows the sphere to float in ponds and water features without sinking
- Mirror polish and optional candy colours hold their appearance outdoors without fading or peeling
- Hollow design keeps large diameters light enough for two people to lift and set
- Wall thickness from 0.6 mm to 6 mm allows cost and weight to match the load case
- Drilling and tapping done before polishing so no site fabrication is needed
- Any diameter from 19 mm to 4000 mm is possible, not limited by standard tooling
- Weld seam ground and polished to be invisible in reflection, so the sphere reads as a complete form
Problems It Solves
- Solid or cast steel spheres become too heavy to install once above 1 metre in diameter
- Painted or mild steel spheres rust at the seam and require repainting every few seasons
- Buying spheres in different sizes from multiple suppliers results in visible differences in polish
- Drilling a finished mirror sphere on site scratches the surface and ruins the finish
Application Scenarios
Floating spheres in garden ponds, fountains and water features
Gazing balls and focal points in public parks, plazas and campus landscapes
Reflective elements in hotel lobbies, shopping malls and office atriums
Modern garden art in private villas and high-end residential courtyards
Cluster installations where multiple spheres in graded sizes form a single artwork
Water features where the sphere sits in or above a pool and carries a spill of water
Who It Is For
- Landscape architects specifying a reflective, weatherproof sculpture for a public space
- Hotel and interior designers needing a modern, high-impact decorative sphere
- Property developers commissioning a consistent visual element across multiple units
- Public art commissioners requiring a durable, low-maintenance sculpture for outdoor display
- Garden centres and outdoor decor importers buying custom sizes by the container
- Film and VFX studios sourcing HDRI reference balls with a mirror finish
Technical Features
- Two hemispheres formed by mould pressing or spinning, then seam welded
- Weld seam ground and blended until invisible in reflection
- Mirror polished through progressive grits to achieve a specular finish
- Optional transparent candy colour spray, vacuum metallising or electroplating
- Drilling and tapping done before final polish to avoid surface damage
- Pedestal, spigot or base plate welded on to match the mounting system
- Watertight construction allows the sphere to float in water without leaking
- Available in AISI 201, AISI 304 or AISI 316 stainless steel for different environments
Specifications and Materials
| Material | AISI 201, AISI 304, or 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, or spinning |
| Standard Finish | Mirror polished |
| Optional Finishes | Transparent candy colour spray, vacuum metallising, electroplating |
| 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 and sheltered outdoor use
- AISI 304 stainless steel, the default for general outdoor and interior applications
- AISI 316 stainless steel, specified for coastal, poolside or high-chloride environments
Customization
- Any diameter from 19 mm to 4000 mm, not limited to standard sizes
- Wall thickness selected for the load case, not a fixed default
- Hole positions, blind holes and drain holes placed to your drawing
- Welded pedestal, spigot, flange or base plate for your existing mounting system
- Colour matched candy finishes and two-tone spheres available
- Graded sets where every sphere in a run shares the same polish batch
How It Is Made
- Step 1Sheet cut and blanked to the required diameter and thickness
- Step 2Hemispheres formed by mould pressing, water pressure or spinning
- Step 3Hemispheres fitted and seam welded using hand welding techniques
- Step 4Weld seam ground and blended until invisible 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 applied
- Step 8Protective film applied, foam wrapped and cased for shipping
Quality Control and Use
Quality Control
- Seam checked in reflected light to confirm invisibility
- Diameter and wall thickness verified against the order before polishing
- Thread holes gauged for pitch and depth after tapping
- Finished spheres kept under protective film until packed
- Photographs of the finished batch sent for approval before 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 Colourful Metal Garden Ball Stainless Steel Hollow Sphere Sculpture
What is the largest diameter you can make?
4000 mm on custom tooling. Any size from 19 mm to 4000 mm is possible, not limited by standard tooling.
How long does an order take?
15 to 30 days after the deposit is received. Large mixed diameter orders may take the full 30 days.
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 Colourful Metal Garden Ball Stainless Steel Hollow Sphere Sculpture
Send the size, finish and fixing you need and we will come back with a price and a lead time for Colourful Metal Garden Ball Stainless Steel Hollow Sphere Sculpture.