This category includes aluminum extrusions (6063-T5, for linear guides), stainless steel angles (304L, 3x3x0.125"), and brass channels (C36000, for decorative trims). Profiles can be cut to length (±0.5mm), drilled, and anodized/painted. Applications: curtain walls, machine frames, and electronic enclosures. Custom extrusion tooling available for unique cross-sections.