Dustair have won the contract to supply the designs for a new three stand hot rolling mill extarction system for Siemens tt be installed in China . As well as the designs of the hoods,  enclosures , 2.4 mtr diameter ductwork , filters and chimney  they will also be supplyig the two 185 kw fans to handle a total air volume of over 215,000 cfm plus the fire control dampers and filters . Installation will be starting early 2013 , with the plant hopefully rolling well into the year .