sintered tungsten carbide compact bit
镶碳化钨硬合金齿钻头
sintered tungsten-carbide insert
烧结碳化钨硬质合金镶齿
insert rock bit
镶硬合金齿牙轮钻头
shaped insert bit
非球形硬合金齿钻头
Study on Impregnated Diamond Bit's Optimal Design for Hard Formation
适合坚硬地层孕镶金刚石钻头优化设计研究
diamod-enhanced hammer bit
金刚石镶齿震击钻头
insert polycrystalline diamond bit
聚晶金刚石镶齿钻头
insert natural diamond bit
天然金刚石镶齿钻头
carbide-tipped gear hob
硬质合金镶片齿轮滚刀
Hard metal (carbide) inserts for mining and oil--field rock bits
GB/T2527-1989矿山、油田钻头用硬质合金齿
Technical conditions of steel-bonded tungsten carbides
GB/T10417-1989碳化钨钢结硬质合金技术条件
simple tungsten carbidecobalt composition
纯碳化钨钴硬质合金制品
Study on Preparation of WC Cemented Carbides by Thermal Mechanical Alloying;
热机械合金化制备碳化钨硬质合金研究
Research on Diamond Enhanced Tungsten Carbide Composite Button and Its Bits;
金刚石—硬质合金复合齿及其钻头的研究
Research and Application of Diamond-impregnated PDC Bit or Drilling in Medium Hard Rock Formation
中硬岩层钻进孕镶金刚石复合片钻头的研究与应用
Steel bonded tungsten carbides-Determination of impact toughness
GB/T10419-1989碳化钨钢结硬质合金冲击韧性的测定
Charring Tungsten Hard Alloy Roller Processing And Tool Selection;
碳化钨硬质合金辊环的加工及刀具的选择
case hardening grade alloy gear steel
渗碳(皮硬)级合金齿轮钢