ISO 721:1991 岩石钻孔.整体钻杆

标准编号：ISO 721:1991

中文名称：岩石钻孔.整体钻杆

英文名称：Rock drilling equipment — Integral stems

发布日期：1991-01

标准范围

指定尺寸。带有锻造凸缘柄的19 mm六角整体阀杆应符合图1所示和表1中给出的尺寸。22 mm阀杆应符合图2所示和表2中给出的尺寸。25mm阀杆应符合图3所示和表3中给出的尺寸。

Specifies the dimensions. The 19 mm hexagonal integral stems with forged collared shank shall comply with the dimensions shown in figure 1 and given in table 1. The 22 mm stems shall comply with the dimensions shown in figure 2 and given in table 2. The 25 mm stems shall comply with the dimensions shown in figure 3 and given in table 3.

标准预览图