Heavy plate does not behave like light sheet metal. A drawing can look clean on screen, but once the steel is thick and long, the real work is in handling, cut allowance, heat input, later machining, and how the blank will move through welding or finishing.
For this type of work, EONE starts with the process route, not only the outside size. Flame cutting is often the practical first step when the part is large, thick, and headed into a welded or machined assembly. If the design calls for smaller features, a cleaner profile, or a thickness range better suited to laser cutting, we review that route instead before the material and downstream process are locked.
Current capacity reference: flame cutting up to 21 m L x 3 m W, with steel plate from about 16 mm up to 180 mm. Final feasibility still depends on the drawing, material grade, cut profile, flatness, and downstream process.
Where flame cutting makes sense
For base plates, large brackets, equipment frames, gussets, counterweight parts, and heavy weldments, the first goal is usually to get a stable blank that can be handled safely and finished correctly. Flame cutting gives room for thick steel and long formats, but the cut plan should leave enough allowance where machining or weld fit-up is required.
The quoting stage should not stop at outside dimensions. We need to know whether the edge will stay as-cut, be ground, be welded, be machined, or disappear inside an assembly. Those details change the route and the allowance we leave on the blank.
What we check before quoting
| Item | Why it matters |
|---|---|
| Material grade and thickness | Cut speed, heat input, preheat need, and edge condition can change by grade and thickness. |
| Profile and hole density | Long straight cuts are different from dense slots, small internal corners, and tight hole patterns. |
| Machining allowance | If a face or hole will be machined later, the blank should include enough stock. |
| Handling and packing | Large plates need a practical plan for lifting, stacking, coating, and container loading. |
Flame cutting is often the first step, not the whole job
A heavy steel blank may still need beveling, grinding, drilling, welding, straightening, CNC machining, blasting, painting, or packing. That is why we prefer to review the full route instead of quoting the cut piece by itself. A cheap cut can become expensive if it leaves the next operation with the wrong edge or not enough stock.
For parts with tight hole locations or mating faces, it is better to decide early which features are cut and which features are machined. That one decision can reduce rework and make inspection easier.
What to send
- Drawing: PDF plus DXF, DWG, or STEP if available.
- Material: grade, thickness, and any substitute material limits.
- Critical areas: machined faces, holes, weld prep, flatness, and cosmetic edges.
- Quantity: prototype, one-time project, or repeat production.
- Finish and packing: raw, blasted, painted, galvanized, palletized, crated, or container-loaded.
Need a heavy plate review?
Send the drawing, material, thickness, quantity, and finish. EONE can check whether flame cutting is the right starting point and what downstream steps need to be planned before production.