Sheet metal welding — TIG, MIG, spot, in certified booths.

AWS D1.1 and D1.2 certified welders in dedicated booths for stainless, carbon steel, and aluminum (segregated to prevent cross-contamination). TIG for cosmetic and stainless work, MIG for structural steel, spot for thin-gauge assemblies. Every weld joint reviewed by a welding supervisor before passing to next operation.

§ 01 / WELDING

Welding processes we run

Process	Best for	Thickness	Notes
TIG (GTAW)	Cosmetic welds, stainless, aluminum, titanium	0.5–10 mm	Slow, precise, highest-quality appearance
MIG (GMAW)	Structural steel, production volumes	1–20 mm	Fast, less cosmetic, high deposition rate
Flux-core (FCAW)	Outdoor or dirty steel	3–25 mm	No shielding gas needed
Spot welding (RSW)	Thin-gauge sheet assemblies	0.3–3 mm	No filler, fast, no post-cleanup
Laser welding	Precision stainless, hermetic seals	0.1–3 mm	Specialty — available via partner shop

§ 02 / WHY

Why segregated weld booths matter

Carbon steel contamination on stainless steel causes rust. Even trace amounts of iron embedded in a stainless weld creates surface corrosion that ruins "stainless steel" parts.

We run three separate weld booths:

Stainless booth — dedicated tools, grinders, and brushes used only on stainless. Stainless welders don't touch carbon.
Carbon steel booth — standard MIG/TIG for structural work.
Aluminum booth — aluminum-dedicated wire, push-pull feeders, separate tungsten.

Passivation (nitric acid bath) is performed on all stainless assemblies after welding — removes any surface iron and restores the protective oxide layer.

§ 03 / WELD

Weld design guidelines

Specify weld type, size, and length

Drawings should show weld symbols per AWS A2.4. Minimum: fillet size (e.g., 3 mm), length (e.g., 50 mm), and location. Missing weld specs cause quote-and-rework cycles.

Design joint access for the welder

A TIG torch needs 100 mm of clearance. If the weld is inside a pocket, the welder can't reach — redesign to access, or use a different joint.

Tack, fit, verify, then weld

Full-penetration welds distort thin sheets. For critical flat assemblies, we tack-weld first, verify dimensions on a granite table, then complete welds in a controlled sequence to minimize warp.

Plan for post-weld finish

Weld beads require grinding for cosmetic finishes. Tell us the target finish (as-welded, ground-smooth, mirror-polished) so we quote grinding hours correctly.

Don't weld over paint, plating, or galvanize

Pre-finished sheet burns at the weld zone, creating toxic fumes (zinc, chromate). Weld raw stock, then paint/plate the assembled part.