Introducing Powerbit for T51 threads | Epiroc US
T51 102mm button bitsare manufactured from high quality alloy steel 45CrNiMoVand premium tungsten carbide buttons YK05, via heat-treatment to provide highest penetration rate and longest lifespan at roughest rock condition. Main threaded button bits are: R22-32mm, R22-36mm, R22-38mm, R22-41mm; R25-33mm, R25 …
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