... -3mm surface finish: 2b SUS201,202,301,304 stainless steel circlelow copperGrade:CR Stainless steel sheet 2B DDQ Ni:0.5~0.55% ... are used in the chemical industry envioronment protection,3. the stainless steel-high copper are used in the heat-preservation, medical appliance ... ,boiler industry,high temperatrue resistance,resistant corrosionPakcaing:export standard packing C/R STAINLESS STEEL CIRCLES 201