Amendment 1 To En 295-5: 1994 Vitrified Claypipes And Fittings And Pipe Joints For Drains And Sewers - Amendment 1: Perforated Vitrified Claypipes And Fittings
出版:British Standards Institution
专家解读视频
Amendment 1 To En 295-5: 1994 Vitrified Claypipes And Fittings And Pipe Joints For Drains And Sewers - Amendment 1: Perforated Vitrified Claypipes And Fittings
出版:British Standards Institution
专家解读视频