ISO 1722:1974 岩石钻孔.冲击式探孔钻探用加长的杆设备.1 1/2-2 1/2英寸（38-64mm）倒锯齿型螺丝设备

标准编号：ISO 1722:1974

中文名称：岩石钻孔.冲击式探孔钻探用加长的杆设备.1 1/2-2 1/2英寸（38-64mm）倒锯齿型螺丝设备

英文名称：Rock drilling — Extension drill-steel equipment for percussive long-hole drilling — Reverse-buttress-threaded equipments 1 1/2 to 2 1/2 in (38 to 64 mm)

发布日期：1974-09

标准范围

指定设备的基本尺寸。给出组件列表；表格和图表:条状钻孔钢的尺寸；延长杆的长度；耦合套管；钻头直径（四翼钻头）；反支墩螺纹；用于延长杆的空心六角杆。

Specifies the basic dimensions for equipment. Gives a list of components; tabulates together with figures: size of drill-steel in bar form; lengths of extension rods; coupling sleeves; bit diameters (four-wing bits); reverse-buttress threads; hollow hexagonal bars for extension rods.

标准预览图