... quality and reasonable price. Product DescriptionCore drilling rig, mud pump, diamond drill bit, reaming shell, drill rod, core barrel, casing shoe ... produce full range of core drilling rig and core drilling tools in DCDMA standard, CDDA standard, and Boart Longyear Standard ... 30m to 1600m. 2. Various mud pumps; 3. Diamond core drilling tools including: A. Diamond core bits (AQ, BQ, NQ, HQ, PQ, BQ3 ...