TS EN ISO 12671

TS EN ISO 12671 is the standard for indicating thermally sprayed coatings by symbolic representation on drawings. Its focus is not on how the coating is made, but on how this surface treatment is shown clearly and consistently in technical documentation. In general technical practice, thermal spraying forms a coating by heating material and projecting it onto a surface, so an agreed drawing notation helps design, manufacturing, and inspection teams work from the same information.

Why symbolic notation matters on drawings

From a general engineering perspective, symbolic notation is a compact language for communicating surface and manufacturing information without long text notes. It helps specify coating-related intent alongside geometry, tolerances, and other product data. For thermally sprayed coatings, that distinction matters because the process is often selected for functional surface performance such as wear resistance, corrosion protection, thermal barriers, or other engineered surface properties. Clear notation supports correct interpretation across the product lifecycle.

What this document covers

The subject of this document is the symbolic representation of thermally sprayed coatings on drawings. In practical terms, it defines how the presence of such a coating is indicated in drawing form. The standard addresses representation on the drawing itself rather than prescribing the coating process or the coating’s performance level. That makes it a documentation standard for consistent communication of thermal-spray surface information.

• Symbolic representation of thermally sprayed coatings on technical drawings
• A standardized way to show surface treatment information
• Clearer communication between design, production, and inspection
• Consistent interpretation of coating intent in engineering documentation