Beijing superior Drilling Equipment Co., Ltd is a comprehensive enterprise set PDC bits, tricone bits production sales. The company was founded in 1989, covers an are...
Coupling sleeves, other name is Coupling, when using rock drills with male shank adapters and a conventional drifter rod, a coupling is required to j...
Polycrystalline diamond compactCommon size: 803/908/1308/1313/1608/1613/1616/1908/1913/1916/1919Usage:1. For oil drilling2. For coal drilling3. For hard ma...