Assembled Large Carbon Steel Sphere
Large Carbon Steel Sphere
- Material
- Q235 Carbon Steel
- Diameter
- 2000mm, 300mm, 700mm
- Thickness
- 1.5mm, 2mm
- Finish
- Raw Finished
- Weight
- 25 kg
- Packed dimensions
- 76 × 76 × 86 cm
- 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
Spun carbon steel hemispheres are formed from a single sheet, so there is no seam across the face. The 45° welding groove is the important detail: it makes the weld between two halves clean, and it is easy to grind and polish afterwards, which is exactly what a fire pit ball or an ironwork sphere needs.
Stamp pressed hemispheres cover the small sizes with a smooth surface that takes powder coating. Hand assembled hemispheres remove the mould limit entirely, so any size from ∅200mm upward can be made, with visible seams that are ground burr free.
Key Benefits
- Q235 Carbon steel alloy sheet assembled
- Hand Made
- MOQ:1PCS.
- Delivery Time: 7 days for scheduled production.
Application Scenarios
- Fire pit balls
- Welded sphere assembly
- Ironwork and sculpture
- Formed heads
Who It Is For
- Metal artists building their own fire pit balls
- Blacksmiths and iron craft workshops
- Sculpture fabricators
- Industrial customers needing thick formed heads
Problems It Solves
- Welding two halves into a true sphere by eye. The 45° groove aligns and fills the joint correctly.
- Assembled hemispheres are hard to close accurately. Spun hemispheres are the right choice if you plan to weld the sphere yourself.
- Plasma cutter capacity limits. Pick a thickness below your machine's maximum cut to avoid heavy burrs.
Technical Features
- Wall thickness available: 1.5mm, 2mm
- Diameter: 2000mm, 300mm, 700mm
- Surface finish options: Raw Finished
- Alloy: Q235 Carbon 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
- Weight
- 25 kg
- Dimensions
- 76 × 76 × 86 cm
- Material
- Q235 Carbon Steel
- Diameter (Mm)
- 2000mm, 300mm, 700mm
- Thickness
- 1.5mm, 2mm
- Finish
- Raw Finished
Category range: Material Q235 carbon steel · Size range ∅6mm to ∅3500mm · Thickness 0.6mm to 16mm depending on forming route
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 Q235 Carbon 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 |
|---|---|---|---|
| Assembled Large Carbon Steel Sphere | Q235 Carbon Steel | 2000mm, 300mm, 700mm | 1.5mm, 2mm |
| 1000mm Carbon Steel Half Sphere | Q235 Carbon Steel | 1000mm | 10mm, 12mm, 14mm, 3mm, 4mm, 5mm, 6mm, 8mm |
| 900mm Carbon Steel Half Ball | Q235 Carbon Steel | 900mm | 10mm, 12mm, 14mm, 3mm, 4mm, 5mm, 6mm, 8mm |
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
Spun or assembled for a fire pit ball?
What thickness do most fire pit customers buy?
Can I order Assembled Large Carbon Steel Sphere in a different size?
How is it packed and shipped?
What do you need from me to quote?
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Made to orderOrder Assembled Large Carbon Steel Sphere
Send the diameter, wall thickness, finish and quantity. Drawings are welcome and quotations usually come back the same working day.