DIN 4925-2/A1 - DRAFT [ Withdrawn ] Draft Document - Well screens and casings of unplasticized polyvinylchloride (PVC-U) for tube wells - Part 2: DN 100 to DN 200 with trapezoidal thread; Amendment A1

standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2017