carbide button inserts, carbide button inserts
2021-7-2 · Mainly used as small buttons for percussion bits to cut soft and medium hard formations. 14.95: 1900: 90.5: For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring. 14.80: 2200: 89.5
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