Qingdao Singho Industrial Company Ltd & Qingdao Singho Machinery Company Ltd were established in 1999 & 2007 respectively, both of which belong to the same legal person. They are recognized as a qualified and proven producer and supplier of castings and finished machined parts to a wide range of industries. Our main products include Drill Pipe Float Valves, Float Collar and Float Shoe, pump parts, valve parts, Oilfield wellhead equipment parts, as well as Investment casting parts ( including automotive Parts, Engineering Machinery Parts, Food Machinery Parts, construction engineering Parts, Pump & Valve Parts) etc. The product materials include gray iron, ductile iron, carbon steel, alloy steel, stainless steel, aluminum bronze, etc. We use sand casting process, investment casting process, and forging to produce blanks, and then precision machining is completed by CNC machine. Some products directly use steel plates, steel pipes, and bars for cutting and finishing.

We have advanced machining equipments and the investment casting production line. We also have the advanced testing equipments such as CMM Machine, Spectrometer, Universal Testing Machine, Hydro Testing Machine, Hardness Tester etc,.magnetic defect detector.

We both have ISO9001:2015 and API Certificate, and is also the high and new tech enterprises. Based on our advanced equipment, more than 20 years experience and QC system, we have powerful ability to supply qualified products and to develop new items according to our customer’s drawings or samples.