We are a leading manufacturer for various of 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, we get very good reputation from our worldwide customers, not only from the domestic, but also from Brazil, Peru, South Africa, Australia, Turkey, Russia, Ukraine, Korea etc..
Our factory general view:


Why choose us:
1. High quality raw material, with premium hardened procedures for long life.
2. Full production chain to secure stable and prompt production leadtime.
3. Experienced Senior Technicians.
4. Long year experienced workers and engineers.
5. Quick and efficient service.
6. Care customers' concerned.
7. Customized acceptable.
RC bits specifications:
RE531 | No. x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No. | ||
mm | inch | Gauge Button | Front Button | |||||
86 | 3 3/8 | 6 x 12mm | 5 x 12mm | 35 | 2 | 84 | 4.2 | RE531-86 |
89 | 3 1/2 | 8 x 12mm | 5 x 12mm | 35 | 2 | 87 | 4.3 | RE531-89 |
95 | 3 3/4 | 8 x 12mm | 6 x 12mm | 35 | 2 | 93 | 4.6 | RE531-95 |
102 | 4 | 8 x 12mm | 6 x 12mm | 35 | 2 | 100 | 4.9 | RE531-102 |
RC bits shank RC45
RC45 | No. x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No. | ||
mm | inch | Gauge Button | Front Button | |||||
133 | 5 1/4 | 8 x 16mm | 6x14+4x13mm | 35 | 2 | 95.5 | 15.1 | RC45-133 |
136 | 5 3/8 | 8 x 16mm | 6x16+3x14mm | 35 | 2 | 95.5 | 15.1 | RC45-136 |
140 | 5 1/2 | 8 x 16mm | 6x16+3x14mm | 35 | 2 | 95.5 | 15.5 | RC45-145 |
RC bits shank RE004
RE004 | No x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No. | ||
mm | inch | Gauge Button | Front Button | |||||
114 | 4 1/2 | 8 x 14mm | 8 x 13mm | 35 | 2 | 112 | 11.8 | RE004-114 |
118 | 4 5/8 | 8 x 14mm | 8 x 13mm | 35 | 2 | 116 | 12.0 | RE004-118 |
121 | 4 3/4 | 8 x 14mm | 8 x 13mm | 35 | 2 | 119 | 12.4 | RE004-121 |
127 | 5 | 8 x 14mm | 8 x 13mm | 35 | 2 | 125 | 12.8 | RE004-127 |
RC bits shank RE542
RE542 | No x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No. | ||
mm | inch | Gauge Button | Front Button | |||||
121 | 4 3/4 | 8 x 14mm | 8 x 13mm | 35 | 2 | 119 | 10.7 | RE542-121 |
124 | 4 7/8 | 8 x 14mm | 8 x 13mm | 35 | 2 | 122 | 10.9 | RE542-124 |
127 | 5 | 8 x 14mm | 8 x 14mm | 35 | 2 | 125 | 11.2 | RE542-127 |
130 | 5 1/8 | 8 x 16mm | 8 x 14mm | 35 | 2 | 128 | 11.5 | RE542-130 |
RC bits shank RE543
RE543 | No x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No. | ||
mm | inch | Gauge Button | Front Button | |||||
124 | 4 7/8 | 8 x 14mm | 8 x 13mm | 35 | 2 | 122 | 11.0 | RE543-124 |
127 | 5 | 8 x 14mm | 8 x 14mm | 35 | 2 | 125 | 11.2 | RE543-127 |
130 | 5 1/8 | 8 x 16mm | 8 x 14mm | 35 | 2 | 128 | 11.4 | RE543-130 |
133 | 5 1/4 | 8 x 16mm | 9 x 14mm | 35 | 2 | 131 | 11.7 | RE543-133 |
RC bits shank RE545
RE545 | No x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No. | ||
mm | inch | Gauge Button | Front Button | |||||
124 | 4 7/8 | 8 x 14mm | 8 x 13mm | 35 | 2 | 122 | 11.0 | RE545-124 |
127 | 5 | 8 x 14mm | 8 x 14mm | 35 | 2 | 125 | 11.2 | RE545-127 |
133 | 5 1/4 | 8 x 16mm | 9 x 14mm | 35 | 2 | 131 | 11.7 | RE545-133 |
136 | 5 3/8 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 134 | 12.0 | RE545-136 |
RC bits shank PR40
PR40 | No x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No | ||
mm | inch | Gauge Button | Front Button | |||||
124 | 4 7/8 | 8 x 14mm | 8 x 13mm | 35 | 2 | 122 | 14.5 | PR40-124 |
127 | 5 | 8 x 14mm | 8 x 14mm | 35 | 2 | 125 | 14.7 | PR40-127 |
130 | 5 1/8 | 8 x 16mm | 8 x 14mm | 35 | 2 | 128 | 14.9 | PR40-130 |
133 | 5 1/4 | 8 x 16mm | 6x14+3x14 | 35 | 2 | 131 | 15.0 | PR40-133 |
138 | 5 7/16 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 136 | 15.8 | PR40-138 |
140 | 5 1/2 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 138 | 16.0 | PR40-140 |
RC bits shank PR52/PR52R
PR52/52R | No x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No. | ||
mm | inch | Gauge Button | Front Button | |||||
133 | 5 1/4 | 8 x 16mm | 6x14+3x14 | 35 | 2 | 131 | 16.9 | PR52-133 |
136 | 5 3/8 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 134 | 17.1 | PR52-136 |
140 | 5 1/2 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 138 | 17.2 | PR52-140 |
143 | 5 5/8 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 141 | 17.3 | PR52-143 |
RC bits shank RE547
RE547 | No x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No | ||
mm | inch | Gauge Button | Front Button | |||||
136 | 5 3/8 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 134 | 14.2 | RE547-136 |
140 | 5 1/2 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 138 | 14.5 | RE547-140 |
143 | 5 5/8 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 141 | 14.7 | RE547-143 |
146 | 5 3/4 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 144 | 15.0 | RE547-146 |
RC bits shank PR54/PR54R
PR54/54R | No x Button diameter mm | Button angle | Flushing holes | Shroud Dia mm | Weight (kg) | Part No | ||
mm | inch | Gauge Buttons | Front Buttons | |||||
136 | 5 3/8 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 134 | 19.0 | PR54-136 |
140 | 5 1/2 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 138 | 19.3 | PR54-140 |
143 | 5 5/8 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 141 | 19.5 | PR54-143 |
146 | 5 3/4 | 8 x 16mm | 6x16+3x14 | 35 | 2 | 144 | 19.6 | PR54-146 |
RC bits sizes available:
1) 3" RC Bits: diameter (86mm-102mm), shank (RE531),
2) 4'' RC Bits: diameter (114mm-127mm), shank (RE004, RE004R),
3) 4.5" RC Bits: diameter (121mm - 133mm), shank (RE542, RE543),
4) 5'' RC Bits: Diameter (113mm-146mm), shank (RE545, PR40),
5) 5.5'' RC Bits: Diameter (133-146mm), shank (RE547, PR52, PR54, RC45, AD670)
Other sizes can be upon customer's requirements. Customized acceptable.




Reverse Circulation Hammer specifications:
1) 3" RC hammers: RE531,
2) 4'' RC hammers: RE004, RE004R,
3) 4.5" RC hammer: RE542, RE543,
4) 5'' RC hammer: RE545, PR40,
5) 5.5" RC hammer: RE547, PR52, PR54, RC45, AD670
6) other sizes could be made by clients' request.
Hammer | Bit Shank | Hole Range (mm) | External Diameter (mm) | Length (without bit) (mm) | Weight | Connection Thread | Working Pressure |
RE531 | RE531 | 84-100 | 81 | 1069 | 29 | 3" Remet | 1.0-3.0Mpa |
RE004 | RE004 | 111-127 | 107 | 1252 | 52 | 3.5"-4" Remet / 4" Metzke | 1.0-3.0Mpa |
RE542 | RE542 | 113-130 | 109.5 | 1191 | 57 | 3.5"-4" Remet / 4" Metzke | 1.0-3.0Mpa |
RE543 | RE543 | 120-135 | 116 | 1191 | 62 | 3.5"-4" Remet / 4" Metzke | 1.0-3.0Mpa |
RE545 | RE545 | 122-135 | 117.5 | 1261 | 65 | 4"-4.5"Remet / 4"-4.5"Metzke | 1.5-3.5Mpa |
RE547 | RE547 | 130-146 | 124.5 | 1270 | 71 | 4.5"Remet / 4.5"Metzke | 1.5-3.5Mpa |
PR40 | PR40 | 124-142 | 120.5 | 1362 | 80.5 | 3.5"-4.5"Remet / 3.5"-4.5"Metzke | 1.5-3.5Mpa |
PR52 | PR52 | 126-142 | 121 | 1227 | 68.5 | 4"-4.5"Remet / 4"-4.5"Metzke | 1.5-3.5Mpa |
PR52R | PR52/PR52R | 130-146 | 124 | 1225 | 65 | 4"-4.5"Remet / 4"-4.5"Metzke | 1.5-3.5Mpa |
PR54 | PR54 | 135-150 | 130 | 1294 | 84.5 | 4.5"Remet / 4.5"Metzke | 1.5-3.5Mpa |
RC45 | RC45 | 130-146 | 124.5 | 1298 | 71 | 4.5"Remet / 4.5"Metzke | 1.5-3.5Mpa |
AD670 | AD670 | 135-150 | 132 | 1339 | 90 | 4.5" Remet / 4.5" Metzke | 1.5-3.5Mpa |


Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.
Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.
Production time:
Generally need 20-30 days
Transportation:
By air, By Express or By sea according to your requests.
Factory Activities:


Thank you very much for your time.