1. Standard ISO9001:2000 2. High precision 3.good quality with competitive price StandardAISI, GB, JISGrade304,316,316L,420,440.,440C..Diameter1.0-50.8mmApplicationwidely applies in the ramming bearing,the valve,the seal,measuring appCertificationISOHardnessHRC20-60Place of OriginShandong, China (Mainland)Brand NameUMTModel Number440Cgrade16-1000440C and General stainless steel widely applies in ...