Custom Aluminum Extrusion & Structural Profiles from China

Custom aluminum extrusion is a tooling-driven sourcing category: you pay once for a custom die, then the per-meter cost is mostly metal and finishing. Chinese extruders work common structural alloys — 6063-T5 for general profiles, 6061-T6 and 6082-T6 where strength matters — with mill, anodized, or powder-coat finishes. Lead time on a new custom die typically runs 15-30 days before first samples, and the spec to lock is wall thickness tolerance, which drifts on cheaper dies and breaks fit-up in assemblies.

When sourcing extruded profiles, the die is yours once paid for, so confirm ownership and storage terms. The common pitfall is approving a first-article sample without measuring wall thickness and straightness across the full length — extrusion tolerances vary along the profile.