Rolled Seam Joint in Sheet Metal Fabrication - Technical Illustration #88247 (License: Personal Use)

This black-and-white technical illustration shows a cross-section of a rolled seam joint, commonly used in ductwork, roofing, and HVAC systems. The drawing highlights the precise overlap and curvature of two metal sheets, with fine hatching indicating depth and material thickness. Such joints ensure durability and leak resistance without welding or fasteners.

Used on engineering, manufacturing, or historical metalworking web pages to illustrate traditional fabrication techniques; targets professionals, students, and restoration specialists researching pre-modern sheet metal assembly methods.