... DIN,SMS,ISO,IDF,AS,BS,BPE Standard. Pipe Fittings(ISO9001:2008,CE,TUV certified) Specification: DN10 ... sight glass,manhole cover,cleaning ball,centrifugal pump,pipe holder etc... Advantage: Prompt quotation, competitive price ... ,specializes in producing kinds of sanitary valves,pipe fittings as well as OEM services over 15 ... s.q.m. under construction.We have strong R & D ability ,there are 105 staffs ...