Original document(8 pages) Authorized document(8 pages) 中文版
    The spiral sharp-rib anchor rod has one straight rod section and one rod section with rolled spiral sharp-rib on the surface. The spiral rib drilling rod for drilling the spiral sharp rib hole has one rod body with rolled spiral rib and one bit on one end of the rod body. The present invention makes it possible to fix the bolt support inserted into the hole without using bolt support fixing agent and this makes the operation simple and the bolt support reusable.
Application Number
申请号
02135358 Application Date
申请日
2002.08.09
Title 名称 Spiral sharp-rib anchor rod and spiral rib drilling rod for drilling hole of spiral sharp-rib anchor rod
Publication Number
公开号
1399059 Publication Date
公开日
2003.02.26
Approval Pub. Date 2006.08.09 Granted Pub. Date 2006.08.09
International Classification 分类号 E21D21/00,E21D20/00
Applicant(s) Name
申请人
Kong Xiangqing
Address 地址 273500
Inventor(s) Name 发明人
Attorney & Agent 代理人 song yongli
More information 更  多  信  息


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