标准摘要
[中文适用范围]： 建立术语并规定主要尺寸，以确保以下设备在系统 A 范围内的互换性：钻杆和接头；套管、套管接箍、套管钻头、套管鞋、驱动鞋和套管扩孔壳；取芯筒、取芯钻头、取芯器和扩孔壳。 指定了一系列用于钻直径从 1.18 英寸到 7.88 英寸的孔并产生直径从 0.73 英寸到 6.5 英寸的岩心的设备的特性。 [外文原描述]： Establishes the nomenclature and lays down the leading dimensions to ensure interchangeability within the limits of system A of the following equipment: drill rods and couplings; casings, casing couplings, casing bits, casing shoes, drive shoes and casing ream shells; core barrels, core bits, core lifters and reaming shells. Specifies the characteristics of a range of equipment for drilling holes having diameters from 1.18 in to 7.88 in and yielding cores having diameters from 0.73 in to 6.5 in.
英文名称Rotary core diamond drilling equipment — System A — Part 2: Inch units