stoodite

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