... industry,plastic hard ware,scent bottle sprayer,valve,nail polish,air condition,medical material,automotive fittings.Material ... chemical resistance, particularly in sulfuric acid concentration. All balls can be annealed and passivated. The ... and bearings).OUR MAIN PRODUCTS:Stainless steel ball:AISI302,304,316,420,4440CBearing steel balls:AISIE52100Carbon steel balls:AISI1010,1015,1045,1085Steel ...