Is é Thelargerthesteelballis, thehardertogettheprecisiongrade.Ø76.2mm (3 ″) isthebiggestapplydiameterofsteelballbatchmanufacturemachine.Inthesteelballindustry, bigsteelballshavelowprecisiongrade.EventhenormalprecisiongradeofØ76.2mmchromesteinebe.
Le déanaí, KaifengBellStainlessSteelBallManufactureCo, Ltd (BellSTEELBALL) madebatchtrialproductionofØ76.2mmbigsizehighprecisionchromesteelballsandsuccessfullyextendthehighestprecisiongradeofourØ76.2mmlargesizechromesteelballtoG28.Thespecificationsincludevariationofballdiameter, deviationfromsphericalform, surfaceroughness, hardnessandsoontotallysatisfytherequirementsofISO3290-1: 2008, GB / T308.1-2013, ANSI / ABMAStd.10A, DIN5401, JISB1501, ГООТ3722, KSB2001andotherinternationalsteelballstandards.
