102mm Hollow Steel Hemispheres
∅102mm(4″) stainless steel hemispheres.
- Material
- 201 Stainless Steel, 304 stainless steel, 316 stainless steel
- Diameter
- 1000mm, 102mm, 10mm, 1100mm, 114mm, 1200mm, 120mm, 127mm, 1300mm, 133mm, 138mm, 1400mm, 1500mm, 150mm, 159mm, 15mm, 1600mm, 1700mm, 1800mm, 180mm, 1900mm, 19mm, 2000mm, 200mm, 2100mm, 219mm, 2200mm, 250mm, 25mm, 300mm, 30mm, 32mm, 3500mm, 350mm, 38mm, 400mm, 42mm, 450mm, 480mm, 500mm, 510mm, 51mm, 550mm, 55mm, 600mm, 60mm, 63mm, 650mm, 66mm, 6mm, 700mm, 750mm, 76mm, 800mm, 80mm, 850mm, 89mm, 8mm, 900mm, 90mm, 950mm, 95mm
- Thickness
- 0.6mm, 0.8mm, 1.5mm, 10mm, 12mm, 14mm, 1mm, 2.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm
- Finish
- Mill Finished, Mirror Polished, Raw Finished, Sandblasting, Unpolished
- Minimum order
- 1 piece on this category unless a small-size minimum applies
- Lead time
- 1 to 3 days from stock, 7 to 15 days for scheduled production
Product Overview
Stamp pressed stainless hemispheres carry a high mirror polish and suit ceiling decoration and traffic corner safety mirror domes.
Spun stainless hemispheres have a true hemispherical shape, which is stronger than a torispherical head. Hemispheres are the best shape for mixing vessels such as pharmaceutical manufacturing bowls, because the corner that causes product burn-on in a torispherical shape is eliminated. Our hemispheres have an extra smooth contour so agitator blades sweep the surface more effectively, and they also hold a stronger vacuum and drain better as tank or pressure vessel ends.
Key Benefits
- Durable AISI304 stainless steel alloy stamping pressed with mirror polished finished.
- Inner polishing is available on demand.
- MOQ:1PCS.
- Delivery Time:2days for collecting from stock.
Application Scenarios
- Pressure vessel and tank ends
- Pharmaceutical and food mixing bowls
- Ceiling decoration domes
- Traffic corner safety mirror domes
- Sphere assembly
Who It Is For
- Pressure vessel and tank fabricators
- Pharmaceutical, cosmetic and food processing equipment builders
- Architectural fit-out contractors specifying ceiling domes
- Road safety product suppliers
Problems It Solves
- Product burn-on in the corner of a torispherical head. A true hemisphere removes the corner.
- Agitator blades that miss the wall. The extra smooth contour lets blades sweep the surface properly.
- Poor draining and weak vacuum performance on vessel ends. The hemispherical shape improves both.
Technical Features
- Wall thickness available: 0.6mm, 0.8mm, 1.5mm, 10mm, 12mm, 14mm, 1mm, 2.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm
- Diameter: 1000mm, 102mm, 10mm, 1100mm, 114mm, 1200mm, 120mm, 127mm, 1300mm, 133mm, 138mm, 1400mm, 1500mm, 150mm, 159mm, 15mm, 1600mm, 1700mm, 1800mm, 180mm, 1900mm, 19mm, 2000mm, 200mm, 2100mm, 219mm, 2200mm, 250mm, 25mm, 300mm, 30mm, 32mm, 3500mm, 350mm, 38mm, 400mm, 42mm, 450mm, 480mm, 500mm, 510mm, 51mm, 550mm, 55mm, 600mm, 60mm, 63mm, 650mm, 66mm, 6mm, 700mm, 750mm, 76mm, 800mm, 80mm, 850mm, 89mm, 8mm, 900mm, 90mm, 950mm, 95mm
- Surface finish options: Mill Finished, Mirror Polished, Raw Finished, Sandblasting, Unpolished
- Alloy: 201 Stainless Steel, 304 stainless steel, 316 stainless steel
- Drilling and tapping in metric and unified threads on request
- Base plates, pedestal tubes and hanging fittings fabricated with the piece
- Sheet development calculated in house, so non-standard sizes are possible above ∅200mm
Specifications
- Diameter (Mm)
- 1000mm, 102mm, 10mm, 1100mm, 114mm, 1200mm, 120mm, 127mm, 1300mm, 133mm, 138mm, 1400mm, 1500mm, 150mm, 159mm, 15mm, 1600mm, 1700mm, 1800mm, 180mm, 1900mm, 19mm, 2000mm, 200mm, 2100mm, 219mm, 2200mm, 250mm, 25mm, 300mm, 30mm, 32mm, 3500mm, 350mm, 38mm, 400mm, 42mm, 450mm, 480mm, 500mm, 510mm, 51mm, 550mm, 55mm, 600mm, 60mm, 63mm, 650mm, 66mm, 6mm, 700mm, 750mm, 76mm, 800mm, 80mm, 850mm, 89mm, 8mm, 900mm, 90mm, 950mm, 95mm
- Material
- 201 Stainless Steel, 304 stainless steel, 316 stainless steel
- Finish
- Mill Finished, Mirror Polished, Raw Finished, Sandblasting, Unpolished
- Thickness
- 0.6mm, 0.8mm, 1.5mm, 10mm, 12mm, 14mm, 1mm, 2.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm
Category range: Material AISI 304, AISI 316, AISI 316L · Size range ∅6mm to ∅3500mm (∅0.236 inch to ∅11½ ft) · Thickness 0.6mm to 16mm (25GA to 5/8 inch)
Materials
We form spheres and hemispheres in AISI 304, AISI 316 and AISI 316L stainless steel, Q235 carbon steel, H62 brass alloy and A6061 aluminium alloy. The alloy decides corrosion resistance, weight and how the surface takes a polish.
For this product the standard specification is 201 Stainless Steel, 304 stainless steel, 316 stainless steel. Tell us the site conditions and we will confirm whether a different grade is worth the cost.
Manufacturing Process
Forming happens by stamping press, water pressuring, spinning or hand assembling. Two halves are joined at the equator, the weld is ground, and the surface is finished last, after any cutting or drilling has been done.
Quality Control
Incoming material
Alloy and sheet thickness are checked against the order before any blank is cut.
Forming check
Diameter and wall are measured after pressing, spinning or water pressuring.
Weld and grind
The equator weld is inspected, then welds and burrs are ground off before finishing.
Surface inspection
Every piece is inspected for scratches, dents and polish consistency under light.
Packing
Protective packing is built around the diameter and weight, and photographs are sent before dispatch.
Customisation Options
- Diameter and wall thickness to your drawing, with no mould limit above ∅200mm
- Metric and unified threaded holes, drilled apertures and perforated patterns
- Welded base tubes, base plates, internal ribs and pedestals
- Mirror, brushed, sandblasted, etched, electroplated, PVD colour or spray painted finishes
- Logos, lettering and world maps by sandblasting, etching, laser cutting or plasma cutting
- LED kits fitted inside the sphere
- Segmentation into quarters or eighths for sizes above container limits
Comparison With Other Products
| Product | Material | Diameter | Thickness |
|---|---|---|---|
| 102mm Hollow Steel Hemispheres | 201 Stainless Steel, 304 stainless steel, 316 stainless steel | 1000mm, 102mm, 10mm, 1100mm, 114mm, 1200mm, 120mm, 127mm, 1300mm, 133mm, 138mm, 1400mm, 1500mm, 150mm, 159mm, 15mm, 1600mm, 1700mm, 1800mm, 180mm, 1900mm, 19mm, 2000mm, 200mm, 2100mm, 219mm, 2200mm, 250mm, 25mm, 300mm, 30mm, 32mm, 3500mm, 350mm, 38mm, 400mm, 42mm, 450mm, 480mm, 500mm, 510mm, 51mm, 550mm, 55mm, 600mm, 60mm, 63mm, 650mm, 66mm, 6mm, 700mm, 750mm, 76mm, 800mm, 80mm, 850mm, 89mm, 8mm, 900mm, 90mm, 950mm, 95mm | 0.6mm, 0.8mm, 1.5mm, 10mm, 12mm, 14mm, 1mm, 2.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm |
| 20mm 30mm 40mm 300mm Stainless Steel Hemisphere Metal Half Ball | — | Made to order | — |
| Large Stainless Steel Hollow Hemisphere | — | Made to order | — |
Comparing forming routes rather than products? The process guide sets out size, thickness, seam and mould limit for each.
Use Guide
Confirm the diameter first
Diameter drives the forming route, the wall thickness, the price and the freight mode. Settle it before anything else.
Match the alloy to the site
304 inland, 316 near salt water or pools, Q235 where a rust patina is wanted, brass or aluminium where weight or colour matters.
Choose the finish last
Finishing always happens after forming, welding, cutting and grinding, so pattern edges stay clean.
Plan the fixing
Tell us whether the piece is bolted, threaded, welded to a base tube or suspended, and we build the fitting into the part.
Check the shipping limit
∅2200mm fits a container, ∅3500mm fits a flat rack, and larger spheres are segmented with bolted ribs.
FAQ
Why is a hemisphere stronger than a torispherical head?
Can two hemispheres be welded into a complete sphere?
Can I order 102mm Hollow Steel Hemispheres in a different size?
How is it packed and shipped?
What do you need from me to quote?
Related Products
20mm 30mm 40mm 300mm Stainless Steel Hemisphere Metal Half Ball
Made to order
Large Stainless Steel Hollow Hemisphere
Made to order
Large Steel Hemispheres
1500mm
Silver Stainless Steel Hemisphere Metal Half Ball for Handrail Stair Newel Post
Made to orderRelated articles
Industry applications
Solutions
Order 102mm Hollow Steel Hemispheres
Send the diameter, wall thickness, finish and quantity. Drawings are welcome and quotations usually come back the same working day.