... ).Surface:cold drawing and hot rolled 3).Standard: ASTM. Name416 Round BarBrandTISCO,BAOSTEELMaterial Grade416Diameterfrom 4mm to 500mmLength12m,11.8m,6m,5 ... :+/-4. 5mm - 0mm Surface180G, 320G, 400G Satin / Hairline(Matt Finish, Brush, Dull Finish)400G, 500G, 600G or 800G Mirror finishApplicationOrnamental tubes, Decoration construction ... %≥35%≥35%Hardness (HV)<253<253<200<200 strong 416 Round Bar