Qingdao Qianjiu Machinery limited is located in Qingdao,north-east China. Conformity with the ISO9001:2008 the production output of company can achieve 3,000 tons casting per year. Our products is highly precision in CT8 to CT10, but in very low cost only made by GREEN SANDS CASTING especially in even distributing hardness. Our product looks more sliver than other common iron casting product because of more pearlite in it. Casting specification can usually be within the range of 0.2kg to 300kg. we can cast ASTM,ISO,DIN,JIS,BS,EN all series Alloy cast iron including Grey iron products and Ductile iron products. 95% products were exported to U.S.A., Europe, Japan and others countries. our suppliers are Cameron(USA), Punch(Japan) Finetec Century(Korea) ,ETC. With a streamlined process network and our technologically advanced production castings and molding equipment, we prove our commitment to providing our customers with the quickest turn-around times possible to meet their casting requirements and schedules. Recently, we successfully made the rotor&stator of scroll type compressor(ASTM Class 30,HT250) by Green Sands Casting. The BHN hardness of the whole Rotor is even distributed 190 to 210 and the pearlitic cast iron is more than 95% in it. The A-type graphite length is under 7mm in 100 times microscope. the qualified products are more than 95% because of less v porosity and inclusion blows in them.