美利体育登录入口官网:DIN EN 681-1 Berichtigung 1:2021-06 弹性密封件-给水和排水应用中使用的管接头密封件的材料要求-第1部分:硫化橡胶
Elastomeric seals - Material requirements for pipe joint seals used in water and drainage applications - Part 1: Vulcanized rubber; German version EN 681-1:1996 + A1:1998 + A2:2002 + AC:2002 + A3:2005; Corrigendum 1