One-stop precision sheet metal manufacturing
Air handling equipment is a sheet metal product before it is anything else: the casing sets the airflow path, the noise, the leakage and the cleanability of the whole unit. We build housings, plenums, filter frames and duct transitions for it.
Data centers, industrial automation, ventilation and filtration, medical equipment, semiconductor tooling, marine equipment and new-energy charging infrastructure.
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.
| Material | Stainless steel 304, 316L, 1.4301 / 1.4404, brushed or 2B finish |
|---|---|
| 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 | Brushed, polished, passivated, weld seams ground flush |
| Minimum order | 1 piece for prototypes, series from 20 pieces |
| Lead time | Sample 8–12 working days · series 4–6 weeks |
Air handling and filtration equipment is judged on airtightness, corrosion and how easily it can be cleaned. A filter frame that leaks at its corner lets air bypass the filter entirely; a housing that traps condensate corrodes from the inside out; an impeller housing that is not true runs out of balance and takes the bearing with it. Sheet metal work drives all three, which is why the tolerances here are functional rather than cosmetic.
Four requirements that come up on almost every ventilation programme.
Airtightness at the corner
Corners and panel joints are where a housing leaks, and a leak past a filter is the whole point of the filter lost. Continuous seams, sealant beads and gasketed joints are built in from the design rather than applied as a fix.
Corrosion from condensate
An AHU sits wet for much of its life. Condensate trays drain properly, joints are sealed against standing water, and components in the air path are specified in stainless rather than coated steel where the exposure justifies it.
Roundness and balance
An impeller or fan housing that is not true transmits vibration into the ductwork and the building. Circular features are cut and formed to a gauge-checked diameter, and the housing is assembled on a fixture so the axis stays true.
Cleanability
Filters and coils have to be reachable and the interior has to be cleanable. Access panels are sized for the maintenance task, and interiors avoid ledges and trapped corners that collect dust and cannot be wiped.
Optical sorter cabinets, infeed frames and buffer hoppers for Tomra (Norway). Anti-stray light precision is achieved through bending tolerance, robot seam welding and matte black interior coating. Highlights: precision light sealing, 6.5 m gantry machining in one setup, matte black interior.
Deep-drawn fan scrolls, guide rings and impeller shrouds for Ziehl-Abegg (Germany). One-piece forming means fewer seams and smoother inner walls, so pressure loss and noise stay low. Highlights: one-piece deep drawing, robot circumferential sealing weld, accurate balance datum.
Vertical collector housings with conical dust hoppers and support frames for Camfil (Sweden). Fully welded gas-tight construction with machined sealing flanges. Highlights: gas-tight welding, anti-bridging hopper forming, machined flange faces, outdoor-grade coating.
Laser machine control cabinet and sealed top housing (sheet metal structure only) for Trumpf (Germany). Sealing is continuous across the top joint so the IP66 rating carries across the whole cabinet. Highlights: IP66 sealing, sealed top transition, oil-resistant industrial coating.
Split upper and lower equipment frames with a machined mounting plate between them for AP TECH (Korea). The 6.5 m gantry mills the mounting face in one setup and assembly gaps are held uniformly. Highlights: gantry-machined mounting face, granite plate fitting, assembly gap control, rigid vibration-damped frame.
Sectioned conveyor frames, support structures, side guarding and drive housings (sheet metal structure only) for Vanderlande (Netherlands). 8 m rail-mounted robot welding keeps long sections straight and interfaces interchangeable. Highlights: long-section robot welding, interchangeable section interfaces, outdoor salt-spray coating.
Quality is measured, not claimed. A precision inspection system compares 40 million measurement points against your CAD in 0.1 seconds per part, and every batch is documented under our ISO 9001 system. Reference customers include TOMRA, TRUMPF, RITTAL, ZIEHL-ABEGG, CAMFIL, VANDERLANDE, MAHLE and WEISS TECHNIK.
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.
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.
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 — you will get a quotation with lead time, not a sales script.
Tell us what you need — our engineer replies within 1 working day.