... diameter=20mm 4.Weight=0980kg 5.ISO9001:2008 aluminum impeller casting part for air blower 1.Our ... company can produces aluminum impeller less than 50kg.2.As the light ... according to customer's drawings,specifications and samples.4.Aluminum casting, sand casting, die cast5.Applied software ... Auto CAD, Solidwork, CAXA UG, CAD/CAM/CAE. aluminum gravity casting, air blower fan blade