BBT shank Taper Arbor

1, -185 ℃ ultra-gun itọju itutu agbaiye, nitorinaa o fẹrẹ jẹ gbogbo iyipada austenite ti o kopa si martensite;
2, Awọn ojoriro ti nanoscale carbide patikulu, mu líle ati toughness;
3, Din awọn ikopa ti wahala, wọ resistance significantly dara si;