Changsha Chaojingang Machinery Manufacturing Co., Ltd.
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We are a leading manufacturer for various of high air pressure rock drilling tools, incl. DTH hammers and bits, RC hammers and bits, top hammer button bits, ODEX etc. Our factory locates in LiuYang city, HuNan province, China, where occupies an area of 26,600 square meters, and production facility occupies 22,000 square meters.
Premium quality, professional serivce and competitive price, help us get very good reputation from our worldwide customers, not only from the domestic, also from Brazil, Peru, South Africa, Australia, Turkey, Russia, Ukraine, Korea etc..
| Products specifications: | ||||||
| Hammers | Bit Shank | Connection Thread | Suitable bit | Working pressure | Air consumption | |
| 1-3" Middle-low pressure DTH hammers | RD40 box | 0.7-1.75Mpa | 0.7Mpa | 4.5m3/min | ||
| BR1 | RD50 box | ¢64-¢76mm | 0.7-1.75Mpa | |||
| BR2 | API 2 3/8" Reg | ¢70-¢90mm | 0.7-1.75Mpa | 1.0Mpa | 4m3/min | |
| BR3 | ¢90-¢110mm | 1.4Mpa | 5m3/min | |||
| 3" hammers | DHD3.5 | API 2 3/8"Reg | ¢90-¢110mm | 1.0-1.5Mpa | 1.0Mpa | 4.5m3/min |
| COP32/COP34 | ||||||
| M30 | 1.5Mpa | 9m3/min | ||||
| 4" hammers | DHD340 | API 2 3/8"Reg | ¢105-¢130mm | 1.0-2.5Mpa | 1.0Mpa | 6m3/min |
| COP44 | ||||||
| QL40 | ||||||
| SD4 | 1.8Mpa | 10m3/min | ||||
| M40 | 2.4Mpa | 15m3/min | ||||
| 5" hammers | DHD350 | API 2 3/8"Reg/API 3 1/2"Reg | ¢130-¢156mm | 1.0-2.5Mpa | 1.0Mpa | 9m3/min |
| COP54 | ||||||
| QL50 | ||||||
| SD5 | 1.8Mpa | 15m3/min | ||||
| M50 | 2.4Mpa | 23m3/min | ||||
| 6" hammers | DHD360 | API 3 1/2"Reg | ¢152-¢203mm | 1.0-2.5Mpa | 1.0Mpa | 10m3/min |
| COP64 | ||||||
| QL60 | ||||||
| SD6 | 1.8Mpa | 20m3/min | ||||
| M60 | 2.4Mpa | 28.5m3/min | ||||
| 8" hammers | DHD380 | API 4 1/2"Reg | ¢200-¢279mm | 1.0-2.5Mpa | 1.0Mpa | 15m3/min |
| COP84 | ||||||
| QL80 | 1.8Mpa | 26m3/min | ||||
| SD8 | 2.4Mpa | 34m3/min | ||||
| 10" hammers | SD10 | API 6 5/8"Reg | ¢254-¢330mm | 1.0-2.5Mpa | 1.0Mpa | 22m3/min |
| NUMA100 | 1.8Mpa | 40m3/min | ||||
| 2.4Mpa | 55m3/min | |||||
| 12" hammers | DHD1120 | API 6 5/8"Reg | ¢305-¢381mm | 1.0-2.5Mpa | 1.0Mpa | 30m3/min |
| SD12 | ||||||
| NUMA120 | 1.8Mpa | 56m3/min | ||||
| NUMA125 | 2.4Mpa | 78m3/min | ||||