规定钻杆的基本尺寸和锥形接头的必要尺寸。这些尺寸应分别符合图1和表1以及图2和表2中给出的尺寸。

Lays down the basic dimensions of drill rods and the necessary dimensions of the tapered connections. These dimensions shall comply with those given in figure 1 and table 1 and in figure 2 and table 2, respectively.