The document describes the designation system for yarns based on continuous filament textile glass (single yarns, folded yarns) and excludes textures yarns and yarns based on staple fibre, rovings and pre-impregnated yarns.
DIN EN 12654-1:1998 history
1998DIN EN 12654-1:1998-12 Textile glass - Yarns - Part 1: Designation; German version EN 12654-1:1998
1998DIN EN 12654-1:1998 Textile glass - Yarns - Part 1: Designation; German version EN 12654-1:1998