PDC drill bolt 
 Diamond drill bolt drill bolt drill bolt drill alloy 
 The company produces bolt PDC drill bit, the drill main models: ZTY27-2, ZTY28 / 2, ZTY30 / 2, ZTY32 / 2, ZTY42 / 2,, hole diameter: φ27-φ42, use the link with threads M14 × 1.5 M16 1/2-12 conventional use of the M14 × 1.5, if the required specifications of the other thread, please note the time of purchase! 
 Shandong Jining coal mining company in the main branch supporting the following products: 
 ◆ mining drill categories: diamond drill bolt drill bolt drill bolt alloy drill PDC drill bit word cross wind drill drill drill column gear of coal drill-hole core drill drill drill oil drill geological geological drill drill drill without core drilling B19 B22 B25 drill rod drill pipe drill twist drill rod water geology exploration drill drill gas emissions 
 ◆ rock types: rock drill electric rock drill hand-held rock drill air leg rock drill internal combustion rock drill up rock drill YDT30 electric rock drill Y26 Hand-held rock drill YL18 hand-held rock drill Y19A hand-held rock drill YT24 rock drill YT27 rock drill YT28 rock drill 7655 Air-leg rock drill MZ7665 rock drill YN27 internal combustion rock drill YN27C internal combustion rock drill YN30A internal combustion rock drill YSP45 up FT110 air leg rock drill Air leg FT120 air leg 
 ◆ bolting categories: self-feeding type anchor bolt tray into the hollow grouting anchor bolt from the hollow grouting anchor bolts L-FRP rebar steel anchor bolt steel anchor tube D slotted mesh prestressed anchor bolts anchoring agent 
 Zhangwen Fang Wang No. zhongmeigk06