DIN EN 1124-2-2012 废水系统用插接式纵向焊接不锈钢管和配件.第2部分:S系统.尺寸规格.德文版本prEN 1124-2-2012
Pipes and fittings of longitudinally welded stainless steel pipes with spigot and socket for waste water systems - Part 2: System S - Dimensions; German version prEN 1124-2:2012