<?xml version="1.0" encoding="UTF-8"?><toc><section id="foreword.nat"><title>Vorwort</title><section id="sub-amendments"><title>Änderungen</title></section><section id="sub-previous.edition"><title>Frühere Ausgaben</title></section></section><section id="sub-1"><label>1</label><title>Anwendungsbereich</title></section><section id="sub-2"><label>2</label><title>Normative Verweisungen</title></section><section id="sub-3"><label>3</label><title>Begriffe</title></section><section id="sub-4"><label>4</label><title>Einsatzgrenzen</title></section><section id="sub-5"><label>5</label><title>Maße, Massen, Bezeichnung</title></section><section id="sub-6"><label>6</label><title>Werkstoff</title><section id="sub-6.1"><label>6.1</label><title>Flanschensteigrohr</title></section><section id="sub-6.2"><label>6.2</label><title>Schrauben, Muttern, Unterlegscheiben</title></section><section id="sub-6.3"><label>6.3</label><title>Dichtungen</title></section></section><section id="sub-7"><label>7</label><title>Ausführung</title></section><section id="sub-8"><label>8</label><title>Hygieneanforderungen</title></section><section id="sub-9"><label>9</label><title>Schweißverbindung</title></section></toc>