1. Standard ISO9001:2000 2. High precision 3.good quality with competitive price StandardAISI, GB, JISGrade304,316,316L,420,440.,440C.. ... of OriginShandong, China (Mainland)Brand NameUMTModel Number440Cgrade16-1000440C and General stainless steel widely applies in the ramming bearing,the valve,the seal ... ≤0.03016.0-18.0≤0.75≤0.60 304 Stainless steel ball