En 295 - 2 vitrified clay pipes and fittings and pipe joints for drains and sewers . part 2 : quality control and sampling 雨水管和污水管用陶土管配件和管道连接件.第2部分:质量控制和采样
2.
Vitrified clay pipes and fittings and pipe joints for drains and sewers - part 2 : quality control and sampling includes amendment a1 : 1999 ; german version en 295 - 2 : 1991 a1 : 1999 陶土污水管.配件件及管连接件.第2部分:质量控制和取
