TS EN ISO 15785

TS EN ISO 15785 is the standard that defines how adhesive, folded and pressed joints are represented symbolically in technical drawings. This matters because the joining method is not just a manufacturing detail: it can affect assembly, inspection, serviceability and the way a drawing is interpreted across design and production teams.

Why symbolic indication matters

In technical documentation, symbols provide a compact and consistent way to communicate joining information without lengthy notes. Adhesive joints are common in sheet materials, composites and lightweight structures, while folded and pressed joints are typical in sheet-metal forming and crimping-type construction. Distinguishing these joint types within a shared drawing language helps prevent ambiguity when a part is manufactured, assembled or checked.

Technical scope of this standard

• Symbolic presentation and indication of adhesive joints in technical drawings.
• Symbolic presentation and indication of folded joints in technical drawings.
• Symbolic presentation and indication of pressed joints in technical drawings.
• Clear visual differentiation between these joint types for readable and consistent drawings.

In broader technical practice, a standard like this helps treat the joining method as essential design information rather than a marginal note. On assembly drawings, production documents and part interfaces, symbols reduce explanatory text, support consistent interpretation and provide a common language between design, manufacturing and quality functions.