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BN H21 grade CBN inserts heavy interupted turning the hardened steel material gear inner bore

   BN-H21  is one of famous grade CBN inserts, it has a perfect heavy interrypted machining performance for the hardened steel,such as:gear. Halnn superhard material research BN-H21 grade CBN inserts few years ago,it has the same quality as SECO,SANDVIK,SUMITOMO,etc ,even better than them by customers trial.

   BN-H21 can be CNGA,SNGA,TNGA,DNGA,VNGA,CCGW,ETC type. Just messge we if you want to get quotate of this grade CBN inserts.  skype:cbn_inserts_angels

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