matiral :carbon steel ball grade:G40-G2000 standard:ISO9001:2008 hrc:n/a application:sprayer ,bicycle and automobile par

matiral :carbon steel ballgrade:G40-G2000standard:ISO9001:2008hrc:n/a

property:magnatic,ferritic,iol packingapplication:curtain ,bearing,bicycle and automobile fitting,valves,sprayer

  

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soft carbon steel ball for curtain