Gantry machining
One-stop precision sheet metal manufacturing
One-stop OEM partner for Gantry machining: MetlTek runs precision sheet metal, mechanical assembly and complete unit delivery from a single plant in Kunshan, China. Founded in 2001, the factory runs three laser cutting machines (a Trumpf 3030 plus two Hongshan machines, the largest 6000 x 2540 mm), a 6.5 m CNC gantry machining center, a Salvagnini P2Lean bending center, Panasonic and Fronius welding robots and an 8 m rail-mounted welding cell. Finished goods ship to industrial customers across Europe and North America.
Every order starts from your drawings. We quote from STEP, DWG or DXF files, build a first-article sample, then run series production on the same line. Typical sheet thickness runs from 0.5 mm to 12 mm in cold-rolled steel, galvanised steel, stainless steel 304/316 and aluminium.
What you get when you order
Three commitments we are judged on by every customer, on every order.
Round-the-clock response
Send drawings at any hour — an engineer replies within one working day, not an automated ticket.
Factory-direct pricing
No trading layer in between. You buy from the plant in Kunshan that actually cuts, bends and welds the parts.
Delivery you can plan around
Committed lead times, serialised inspection records and export packing that survives ocean freight.
Typical specifications
| Material | Cold-rolled steel DC01, galvanised steel, stainless steel 304 / 316, aluminium |
|---|---|
| Sheet thickness | 0.8 – 6.0 mm |
| Tolerance | ± 0.05 mm (laser cut, all machines), ± 0.25° (Salvagnini / TRUMPF bending), ± 0.3 – 0.5° (conventional brakes) |
| Surface finish | Powder coating to RAL (2 automatic lines), zinc plating, brushed or polished |
| Minimum order | 1 piece for prototypes, series from 50 pieces |
| Lead time | Sample 7–10 working days · series 3–5 weeks |
Production Equipment
Laser cutting (flat + gantry large-format)
| Array | ||
|---|---|---|
| TRUMPF 1030 fibre laser (Germany) | 1 | 1500×3000 mm · mild steel T16 / stainless T12 · ±0.05 mm |
| TRUMPF 3030 fibre laser (Germany) | 1 | 1500×3000 mm · mild steel T18 / stainless T14 · ±0.05 mm |
| TRUMPF 5030 fibre laser (Germany) | 1 | 1500×3000 mm · mild steel T25 / stainless T20 · ±0.05 mm |
| TRUMPF 4002 dual-head fibre laser (Germany) | 1 | 2500×4000 mm · mild steel T25 / stainless T20 · ±0.05 mm |
| GP-6547Z2 gantry large-format fibre laser (China) | 1 | 6500×4700 mm · mild steel T25 / stainless T20 · ±0.05 mm · twin shuttle tables |
Welding (manual + robotic + 20 m line)
| Array | ||
|---|---|---|
| WSM-250C manual TIG stations (China) | 22 | 450 A power source · non-standard parts |
| Panasonic TM-1800III robot welding cells (Japan) | 4 | MIG / TIG · 10 m/s · weld strength ≥ 90% of base metal |
| 20 m gantry automated welding line (custom, China) | 1 | 20 m effective stroke · gantry travel axis + flexible positioners · +300% vs manual |
| Weld seam cleaner (custom, China) | 1 | seam surface finishing |
All parameters match the factory nameplates and can be verified during customer audits.
Why cutting 6.5 metres in one piece changes the design
Most sheet metal shops stop somewhere around 1.5 × 3 m. Past that you either split the part and weld it back together, or you buy it somewhere else. Our gantry laser cuts 6,500 × 4,700 mm in a single pass, and that changes the arithmetic on large enclosures and structures. Fewer welded joints means less distortion to correct, no seam to seal and no rivet line to dress. Stiffness comes from the sheet itself rather than from the welds that hold it together, which is exactly what you want on a frame that has to stay flat. Twin shuttle tables keep the machine productive: one bed cuts while the other is loaded, so a nest of large blanks does not sit idle between sheets. When a part genuinely is too big, a flat pack that ships strapped on a pallet usually beats a welded frame that ships on a flatbed — and it arrives without a weld to inspect.
Large-format capacity
| Gantry cutting envelope | 6,500 × 4,700 mm — one piece, no splice, one set of datum edges |
|---|---|
| Materials | mild steel up to T25 mm · stainless up to T20 mm · both with ± 0.05 mm positioning |
| Table handling | twin shuttle tables — cutting and loading overlap instead of alternating |
| Dual-head machine | 2,500 × 4,000 mm with two cutting heads, for mirrored or repeated large parts in one pass |
| Downstream | large parts go straight into our 20 m gantry welding line and our 2500 × 3500 × 3000 mm coating oven, so the format survives the whole route |
What large-format avoids
The most common problems on a big enclosure are inherited from splitting it up in the first place.
Stiffness lost at the seam
Two panels butt-welded together are never as stiff as one continuous sheet, and they introduce a discontinuity exactly where the load is. One-piece cutting removes the seam from the design.
Leak paths at the joint
Every welded joint on an enclosure is a potential leak path, and a leak path on an IP-rated cabinet is a callback. Fewer joints means fewer places to seal.
Distortion you have to grind out
Welding pulls a large panel out of flat. Correcting it afterwards costs grinding, filler and inspection time; not creating it costs nothing.
Packing and freight
A flat pack wraps and straps onto a pallet. A welded frame needs a crate, more volume and more freight — worth counting before you decide the split.
What the gantry format is for
- Walk-in energy storage enclosures and battery cabinets
- Full-length machine frames and gantry bases
- Large equipment skins and side panels with no visible joint
- Cabinets that must present a continuous face to the customer
- Structures where a single datum edge simplifies downstream assembly
Built for buyers who audit their supply chain
Four things that decide whether a metal enclosure project lands on time and on budget.
Tolerances we can hold
±0.1 mm on laser-cut features and ±0.3 mm on formed parts, verified before dispatch.
Quality you can audit
ISO 9001 processes, first-article inspection and a measurement report with every series batch.
One supplier, five processes
Cutting, bending, welding, coating and mechanical assembly under one roof — no hand-offs between vendors.
Built for export
Export-grade packing, customs documentation and container loading planned for Europe and North America.
From your drawing to a delivered container
A four-step process, with a defined deliverable and a defined owner at each step.
Send drawings
STEP, DWG, DXF or PDF — tell us material, surface finish and quantity.
Engineering review
We flag manufacturability issues and return a quotation with lead time and tooling cost.
Sample and approval
A first-article sample in 7–10 working days for dimensional and finish sign-off.
Series production and shipping
Batch production with inspection records, then export packing and container loading.
Product lines
Frequently asked questions
What is the minimum order quantity?
There is no fixed MOQ. Prototypes and small batches from one piece are accepted, and unit prices fall as volume grows. One-off tooling cost is quoted separately.
Can you work from our drawings and keep them confidential?
Yes. We regularly work under NDA and produce strictly to customer drawings. Files stay on an internal server and are never shared with third parties.
How long does production take after the sample is approved?
A first-article sample is typically ready in 7–10 working days, and series production runs in 3–5 weeks depending on quantity and surface finish.
Send your drawings and quantity — an engineer, not a sales script, comes back with a quotation covering material, tooling, surface finish and lead time.
Send your drawings and quantity — you will get a quotation with lead time, not a sales script.