Qingdao Singho Industrial Company Ltd. is recognized as a qualified and proven producer and supplier of castings and finished machined parts to a wide range of industries. The materials of our parts include grey iron, ductile iron, carbon steel and stainless steel. We use sand casting and investment casting process to cast raw parts, and then we finish machining by CNCs or NC Machines to achieve reliable and precise finished parts. Our present parts are used in the following fields: Centrifugal Pumps, Filters, Valves and Oil Drilling Machinery. We are proud to account some world leading...