germany, all in mm
concrete: 100, 150, 200, 250, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500
reinforced concrete: 250, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1800, 2000, 2200, 2500, 2800, 3000, 3200, 3500, 4000
see:
www.fbsrohre.de
synthetic material (e.g. pvc, pe, pp), normal sizes: 150, 200, 250, 300, 400, 500; some manufacturers also offer: 110, 160, 200, 250, 315, 400, 500, 630, 710, 800
see:
www.wavin.de - http://de.wavin.com/master/master.jsp?FOLDER%3C%3Efolder_id=2534374303743577&middleTemplateName=oc_middle_system_browse_I&bmLocale=de_DE
or
www.rehau.de - www.rehau.de/bau/tiefbau/hochlast-kanalrohrsysteme/hochlast-kanalrohrsysteme.shtml