... etc 2.standard:ASTM, DIN,JIS,BS,etc stainless steel impeller pump1.ISO9001:2000 Approved2.technique:silical sol technique/lost ... .Material:ss316,ss316l,cf8m,cf3m,cn7m,cg8m ,carbon steel,alloy steel etc4.Standard:ASTM,AISI,DIN,JIS etc5.strict material inspection6 ... 15Cr3, 15CrNi6, 16MnCr5, 42CrMo4, 35CrMo, 40Cr etcsizeAccording to customers' requirementdesignpacking custom-made pump impeller cd4mcu