... and anti-fatigue. H9/H11 tolerance. Strong corrosion Jiangsu Specifications2507 super duplex steel round bar steel grade:904L Size:3-350mm ... Round 20*20-100*100mm Angle bright bars astm a2762507 super duplex steel round bar OD (Round bar)Size (Square bar ... .)GradeAISI304, 304L,316,316L,321,410,420 ect.CertificationISO Mill Test CertificateStandardJIS,SUS,AISI,ASTM,GB,DIN,etc.Material201/202.304 ...