% Präambel
\documentclass[a4paper,12pt,parskip]{scrartcl}
\usepackage[ngerman]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\pagestyle{empty}
\usepackage{tikz}

% document-Umgebung
\begin{document}
\begin{tikzpicture}[scale=0.6]
\fill[fill=gray!25!white] (9mm,12mm) arc [start angle=30, end angle=150, radius=10.392305mm] -- cycle ;
\draw[thick] (9mm,12mm) arc [start angle=30, end angle=150, radius=10.392305mm] ;
\draw[very thick,fill=gray!20!white] (-9mm,-12mm) rectangle (9mm,12mm) ;
\draw[ultra thick] (-7mm,-12mm) -- (-7mm,-48mm) ;
\draw[ultra thick] (0,-12mm) -- (0,-48mm) ;
\draw[ultra thick] (7mm,-12mm) -- (7mm,-48mm) ;
\node[align=center] at (0,0) {BC\\548} ;
\node at (-12mm,-54mm) {\textbf{C}} ;
\node at (0,-55mm) {\textbf{B}} ;
\node at (12mm,-54mm) {\textbf{E}} ;
\end{tikzpicture}
\end{document}