ISO 1722-1974 岩石钻孔 深孔冲击凿岩用加长钻杆钎具 1 1/2-2 1/2英寸(38-64mm)反向锯齿螺纹
ISO 1722-1974 标准详情
- 标准号:ISO 1722-1974
- 中文标题:岩石钻孔 深孔冲击凿岩用加长钻杆钎具 1 1/2-2 1/2英寸(38-64mm)反向锯齿螺纹
- 英文标题: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)
- 标准类别:国际标准化组织标准ISO
- 发布日期:1974-09
内容简介
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
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