Sandstein was established in 1998, mainly exporting industrial products used for water supply, sewage etc. Our main products are: ductile iron pipings and fitting, valves, water meters, flanges and manhole covers. We also can produce special products according to customers&＃039; drawing. And our annual capacity is 30000 tons. We get certification of ISO 9001:2008, ISO2531, EN545, EN598, EN124 and EN1092.