确定术语并规定主要尺寸，以确保以下设备在系统B的限制范围内的互换性:钻杆和联轴器、钓鱼杆和联轴器；套管、套管驱动靴、套管靴钻头、套管钻头和沉积管；取芯筒、取芯钻头、取芯升降机和扩孔壳体。规定了一系列钻孔设备的特性，钻孔直径为1.42英寸至5.74英寸，产生的岩心直径为0.87英寸至4.72英寸。

Establishes the nomenclature and lays down the leading dimensions to ensure interchangeability within the limits of system B of the following equipment: drill rods and couplings, fishing rods and couplings; casing tubes, casing drive shoes, casing shoe bits, casing bits and sediment tubes; core barrels, core bits, core lifters and reaming shells. Specifies the characteristics of a range of equipment for drilling holes having diameters from 1.42 in to 5.74 in and yielding cores from 0.87 in to 4.72 in in diameter.