German state-owned railway Deutsche Bahn will have to wait longer for further next-generation 3neo ICE high-speed trains because of production delays at manufacturer Siemens. Siemens said on Thursday that there were quality defects in some weld seams in parts provided by a subcontractor which were discovered during a routine internal inspection. “Siemens Mobility is in close contact with Deutsche Bahn and the subcontractor and is working hard to resolve the issue,” a spokesman said on Thursday. “All trains that have already been delivered are not affected and can be used safely,” the Siemens s…