BS 2593:1974現(xiàn)行
Specification for rotary drill rods and tungsten carbide tipped rotary drill bits
出版：British Standards Institution
專家解讀視頻
基本信息
標準編號： BS 2593:1974
發(fā)布時間：1974/12/31 0:00:00
標準類別：Standard
出版單位：British Standards Institution
標準頁數(shù)：16
標準簡介
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.
標準備注
? British Standards Institution 2013
