MSZ KGST 205-1975 《玻璃颗粒金刚石钻头》.pdf

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JUS M J2 118-1989 Rotarv drilling equioment Diamond drilling bits polvctvstalline diamond compact bits and diamond core bits《旋转钻孔设备 金刚石钻头 聚晶金刚石复合片钻头与金刚石岩心钻头》.pdf

TS 2299-1976 DRILLING EQUIPMENT - DIAMOND DRILLING BITS AND DIAMOND CORE BITS SIZES AND TOLERANCES《钻井设备 金刚石钻头及金刚石取芯钻头 尺寸和公差》.pdf

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