BS 2593:1974现行
Specification for rotary drill rods and tungsten carbide tipped rotary drill bits
出版：British Standards Institution
专家解读视频
基本信息
标准编号： BS 2593:1974
发布时间：1974/12/31 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：16
标准简介
Dimensions, one-piece bits including pilot and reamer bits and tungsten carbide tips with appropriate hardness grades. Materials and slot for bit, pitch of rod, straightness, and interchangeability requirements.
标准备注
© British Standards Institution 2013
