Changsha Chaojingang Machinery Manufacturing Co., Ltd.
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nearly 400 sets of professional equipment for research, manufacture and testing of rock drilling machinery and pneumatic tools. The factory develops and manufactures the most advanced high / low air pressure DTH and bits, reverse circulation hammer and bit, top hammer drill bit, casing drilling systems, drill pipes and rods etc. It is widely used in earthwork engineering, mining, water well drilling and construction engineering, geothermal drilling, municipal engineering and other fields. To keep innovation and stand competition, the factory provides high-quality products, advanced technology, professional service, focus on customer-centered, quality-oriented, to provide overall rock drilling solutions. Sincerely hope to work with old and new friends for mutual benefit and create a better future.| APPLICATION AREA | THREAD TYPE | L | FT/IN | BITS | |
| Surface ground drilling | T45 | MM/MF | 3660 | 12' | T45-76mm,89mm |
| T51 | MM/MF | 3050 | 10' | T51-89mm,102mm,115mm,127mm | |
| T51 | MM/MF | 3660 | 12' | ||
| GT60 | MM/MF | 4305 | 14' | GT60-102mm,115mm,127mm | |
| Drifting and Tunnelling | T38H35R32 | MM | 4305 | 14' | R32-41mm,43mm,45mm,48mm,51mm |
| T38H35R32 | MF | 4915 | 16' | R32-76mm,89mm,102mm | |
| T38H35R32 | MM | 5525 | 18' | ||
| T38H35R32 | MF | 5525 | 18' | ||
| T38H35R32 | MM | 6400 | 21' | ||
| T38H35R32 | MF | 6400 | 21' | ||
| Underground drilling | T38H35R32 | MM/MF | 2475 | 18' | R32-41mm,43mm,45mm,48mm,51mm |
| T38H35R32 | MM/MF | 2900 | 9.5' | R32-76mm,89mm,102mm | |
| T38H35R32 | MM/MF | 3700 | 12' | ||
| Underground mining | T45 | MF | 1220 | 4' | T45-76mm,89mm |
| T45 | MF | 1525 | 5' | ||
| T45 | MF | 1830 | 6' |