... 2.delivery time:30-35days 3.payment items:T/T,L/C Feature Grade:GB 3Cr17Mo / W-Nr 1.2316 ESR ... SUS420J2 ESR / AISI 420J2 ESR / BOHLER M300 / DIN X30WMo17 / DAIDO G-STAR Size: Bar, 50-380mm/dia. ;Flat, 30~250*150 ... acrtic acid during process, such as CA, POM product. DAIDO G-STAR Tool Steel Flat