• Yanggu Yishan Drilling Tools Co., Ltd.

    We are a professional manufacture of rock drilling tools, mining DTH Drilling tools and construction tools. 1. Integral drill Rods (Integral Drill steel) Shank H22x108mm, H19x108mm, standard hex, Bit diameters include 20-42mm 2. Tapered (Tapered Steel) Including rods with ...

    Telephone:86-635-6391888Address:Yanshan Road South, Yanggu, Shandong, China

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