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Building 8, No.460 Huaizhong Road,Shijiazhuang,Hebei,China China
The PDC coal drill bit is mainly used for roof bolting hole drilling. The applicable rock hardness is from 60MPa to 120MPa. The rock can be sandstone,
The hexagonal drill rod is mainly used for roof bolting in coal mining. It is with water flushing hole. Available specification: AC19mm, AC22mm
The coal drill bit is used for coal face drilling and roof bolting work. It is the most cost effective drill bit. The tip is made of Tungsten carbide.
連絡先担当者 Mr. Wally Chn
住所 Building 8, No.460 Huaizhong Road, Shijiazhuang, Hebei
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