KSQ Down The Hole Rock Drilling Tools- DTH Hammer and DTH Button Bit 3 inch, 4 inch, 5 inch, 6 inch, 8 inch etc.

1. Unit 2-705 Jialian Plaza
Gulou Nanjie, Changping District
102200 Beijing
Telephone: +86-10-60714361
Fax: +86-10-89787585
Website: http://www.ksq-tech.com

2. DTH Drilling Tools
Product Catalog

3. The MIROC® Rock Drilling Tools product line by KSQ Tecnologies (Beijing) Co. Ltd. is the result of years of
advanced engineering, precision manufacturing, and dedication to the use of high quality materials.
MIROC® Rock Drilling Tools are used by many drilling professionals related to mining, construction, tun-
neling, and quarrying projects around the globe.
KSQTechnologies (Beijing) Co. Ltd. provides exceptional technical know-how in development, production,
and application. The company has adopted advanced manufacturing processes to ensure high quality
steels and tungsten carbide inserts for its rock drilling accessories. Its personnel understand clients’drilling
needs, and have the service skills to recommend the right drilling tools for the job. Its experienced product
developers can also create custom tools. Furthermore, the company’s development team introduces in-
novative products each year – tools that are rigorously tested in the field and proven to perform beyond
industry expectations.
MIROC® Rock Drilling and Ground Support Tools include:​
Integral Rods
Plug Hole Rods
Tapered Drilling Tools
Extension Drilling Tools
Drifting and Tunneling Tools
Reaming Tools
Shank Rods
Shank Adapters (Striking Bars)
Down-the-hole (DTH) Bits
Down-the-hole (DTH) Hammers
Contact us for more information on our products and services.
Introduction

4. Table of Contents
DTH Bit Face Designs 3
DTH Bit Shank Identification Chart 4
Low Air Pressure DTH Bits 6
3” High Pressure DTH Bits 8
4” High Pressure DTH Bits 10
5” High Pressure DTH Bits 16
6” High Pressure DTH Bits 21
DTH Drill Pipes 32
DTH Subs 33
MIROC DTH Hammers
Low Pressure DTH Hammer 35
Medium Pressure DTH Hammer 35
High Pressure DTH Hammer 35
Efficient High Pressure DTH Hammer 36
Through Reverse Circulation DTH Hammer 36
MIROC DTH Hammer Bits
Medium High Pressure DTH Bits 37
Efficient High Pressure DTH Bits 37
Low Pressure DTH Bits 38
Through Reverse Circulation DTH Bits 38

5. 3. DTH DRILLING TOOLS

6. DTH DRILLING TOOLS . 4

7. 5. DTH DRILLING TOOLS

8. DTH DRILLING TOOLS . 6

9. 7. DTH DRILLING TOOLS

10. DTH DRILLING TOOLS . 8

11. 9. DTH DRILLING TOOLS

12. DTH DRILLING TOOLS . 10

13. 11. DTH DRILLING TOOLS

14. DTH DRILLING TOOLS . 12

15. 13. DTH DRILLING TOOLS

16. DTH DRILLING TOOLS . 14

17. 15. DTH DRILLING TOOLS

18. DTH DRILLING TOOLS . 16

19. 17. DTH DRILLING TOOLS

20. DTH DRILLING TOOLS . 18

21. 19. DTH DRILLING TOOLS

22. DTH DRILLING TOOLS . 20

23. 21. DTH DRILLING TOOLS

24. DTH DRILLING TOOLS . 22

25. 23. DTH DRILLING TOOLS

26. DTH DRILLING TOOLS . 24

27. 25. DTH DRILLING TOOLS

28. DTH DRILLING TOOLS . 26

29. 27. DTH DRILLING TOOLS

30. DTH DRILLING TOOLS . 28

31. 29. DTH DRILLING TOOLS

32. DTH DRILLING TOOLS . 30

33. 31. DTH DRILLING TOOLS

34. DTH DRILLING TOOLS . 32

35. 33. DTH DRILLING TOOLS

36. DTH DRILLING TOOLS . 34

37. MIROC DTH Hammers
Low Pressure DTH Hammer
35. DTH DRILLING TOOLS
Medium Pressure DTH Hammer
High Pressure DTH Hammer
Part Number Description Drilling Ø Length O.D. kg Mpa m3/min N.m Impact/min Rod Thread Bit Thread Bit Shank
4148301622 DTH360 ø152 - 305 145 ø13 126 0.8 - 2.1 8.5 - 25 822 820 - 1475 Outside API 3 1/2" ø99.5-8 DTH360-152/165/178/194/203/216/230/254/305
4148301620 DTH355 ø130 - 152 122 ø12 74 0.8 - 2.2 6.5 - 18 700 810 - 1500 Outside API 2 3/8" ø84-8 DTH355-140/152
4148301619 DTH350 ø130 - 152 138 ø11 69 0.8 - 2.3 5.7 - 18 590 810 - 1470 Outside API 3 1/2" ø84-8 DTH350-130/140/152
4148301621 DTH355K ø130 - 152 109 ø12 70 0.8 - 2.4 4.5 - 18 800 840 - 1500 Outside API 2 3/8" ø84-8 DTH355 (no foot valve)
4148301615 DTH335 ø90 - 93 908 ø81 21.8 0.8 - 2.5 4.3 - 14.2 205 950 - 1500 Outside API 2 3/8" ø53-8 DTH335-90
4148301616 DTH340 ø105 - 130 105 ø92 38 0.8 - 2.6 3.5 - 18 304 800 Inside API 2 3/8" ø64-8 DTH340-105/115/130
4148301618 DTH345K ø110 - 130 994 ø98 40 0.8 - 2.7 3.5 - 15 400 820 Outside API 2 3/8" ø64-8 DTH345 (no foot valve)
4148301617 DTH345 ø105 - 130 103 ø98 39 0.8 - 2.8 3.5 - 15 335 800 Outside API 2 3/8" ø64-8 DTH345-115-130
4148301614 DTH330 ø82 - 85 867 ø71 19 0.8 - 2.9 3.0 - 12 150 800 Inside 48.8 x 4.2 ø47-6 DTH330-85
4148301624 DTH3120 ø302 - 508 193 ø27 642 0.8 - 2.10 14 - 45 241 980 - 1446 Outside API 6 5/8" ø184-10 DTH3120-302/311/330/357/381/444/483/508
4148301623 DTH380 ø203 - 350 155 ø18 277 0.8 - 2.11 12.0 - 31 156 860 - 1510 Outside API 4 1/2" ø128-10 DTH380-203/216/230/254/310/350
Part Number Description Drilling Ø Length O.D. kg Mpa m3/min N.m Impact/min Rod Thread Bit Thread Bit Shank
4148301607 DTH90 ø90 - 130 796 ø80 20 0.5 - 0.7 6 110 820 Outside M48 x 10 x 2 ø54-6 DTH90-90/100/105/110/120/130
4148301606 DTH80XD ø80 - 90 735 ø74 17 0.5 - 0.7 5.5 85 800 Outside API 2 3/8" ø49-6 DTH80XD-90
4148301608 DTH90-I ø90 - 130 796 ø80 20 0.5 - 0.7 5.5 120 820 Outside M48 x 10 x 2 ø54-6 DTH90-90/100/105/110/120/130
4148301603 DTH80 ø80 - 82 796 ø72 17 0.5 - 0.7 5 81 800 Outside M48 x 10 x 2 ø50-6 DTH80
4148301605 DTH80X ø80 - 82 756 ø72 17 0.5 - 0.7 4.5 75 800 Inside 48.8 x 4.2 ø50-6 DTH80
4148301601 DTH70 ø72 - 74 803 ø67 14 0.5 - 0.7 3 70 810 Inside 48.8 x 4.2 ø43-6 DTH75
4148301602 DTH76 ø74 - 76 766 ø67 15 0.5 - 0.7 3 75 810 Outside M48 x 10 x 2 ø44-4 DTH76A
4148301604 DTH80-II ø75 - 80 756 ø67 15 0.5 - 0.7 3 75 810 Inside 45 x 4 ø44.5-6 DTH80-II-80
4148301600 DTH65B ø68 - 70 745 ø61 13 0.5 - 0.7 2.5 51 810 Outside M42 x 10 x 1.5 ø37-4 DTH65
4148301611 DTH170 ø170 - 250 102 ø15 90 0.5 - 0.7 19.5 420 790 Outside M100 x 28 x 10 ø98-6 DTH170-175/185/195/200/210/220/230/240/250
4148301610 DTH150 ø150 - 185 908 ø13 75 0.5 - 0.7 17 340 800 Inside 76 x 10 x3 ø90-6 DTH150-155/165/170/175/185/200
4148301609 DTH110 ø110 - 150 838 ø98 30 0.5 - 0.7 11 180 830 Inside API 2 3/8" ø65-6 DTH110-110/115/120/125/130/135/140/150
Part Number Description Drilling Ø Length O.D. kg Mpa m3/min N.m Impact/min Rod Thread Bit Thread Bit Shank
4148301612 DTH930 ø90 - 120 870 ø80 25 0.8 - 1.2 6 180 700 Outside API 2 3/8" ø54-6 DTH930-90/100/105/110/120/130
4148301613 DTH4.5 ø110 - 150 917 ø98 36 0.8 - 1.2 11 300 800 Inside API 2 3/8" ø65-6 DTH4.5-110/120/130/140/150

38. MIROC DTH Hammers
Efficient High Pressure DTH Hammer
DTH DRILLING TOOLS . 36
Part Number Description Drilling Ø Length O.D. kg Mpa m3/min N.m Impact/min Rod Thread Bit Thread Bit Shank
4148301628 DTH480 ø203 - 254 145 ø18 260 0.8 - 2.1 9.6 - 24.8 187 1100 - 1350 Outside API 4 1/2" ø128-12 DTH480-203/216/230/254/310/350
4148301627 DTH460 ø165 - 216 107 ø14 92 0.8 - 2.1 6.8 - 20 980 860 - 1610 Outside API 3 1/2" ø104.4- DTH460-165/178/194/203/216
4148301626 DTH450 ø130 - 152 108 ø11 60 0.8 - 2.1 3.0 - 14 840 850 - 1600 Outside API 2 3/8" ø83-12 DTH450-130/140/152
4148301625 DTH440 ø115 - 130 998 ø98 40 0.8 - 2.1 3.0 - 12 402 850 - 1320 Outside API 2 3/8" ø67-12 DTH440-115/120/130
Through Reverse Circulation DTH Hammer
Part Number Description Drilling Ø Length O.D. kg Mpa m3/min N.m Impact/min Rod Thread Bit Thread Bit Shank
4148301632 DTHF365 ø160 - 200 134 ø15 61 0.8 - 2.1 9.0 - 18 950 600 - 1100 Inside API 4 1/2" - DTHF365-165/178/195
4148301631 DTHF355 ø135 - 155 129 ø12 36 0.8 - 2.1 6.5 - 19.3 751 810 - 1200 Inside T 91-3 - DTHF355-140/152
4148301630 DTHF345 ø110 - 130 128 ø10 36 0.7 - 2.1 5.7 - 14.2 600 800 Inside API 2 7/8" - DTHF345-115/127
4148301629 DTHF335 ø90 - 105 114 ø85 33 0.7 - 2.1 4.2 - 11.7 475 800 Inside API 2 3/8" - DTHF335-95/100
4148301635 DTHF3125 ø311 - 360 143 ø27 85 0.8 - 2.4 20 - 37.8 125 600 - 1150 Inside API 4 1/2" - DTHF3125-311/355/381
4148301634 DTHF3105 ø254 - 311 144 ø25 75 0.8 - 2.4 15 - 34 126 600 - 1230 Inside API 4 1/2" - DTHF3105-254/273/305
4148301633 DTHF385 ø200 - 254 157 ø19 61 0.8 - 2.1 12 - 30.8 104 660 - 1208 Inside API 4 1/2" - DTHF385-203/216/230/254

39. MIROC DTH Hammer Bits
37. DTH DRILLING TOOLS
Middle - High Pressure DTH Bits
Part Number Flushing Holes Ø (mm) Weight (kg) Gauge (# x mm) Front (# x mm) DTH HammerProduct Code
4148301636 115 - 118 6.4 7 x 14 6 x 12 DTH4.52DTH4.5-115
4148301637 120 - 123 7 7 x 14 6 x 12 DTH4.52DTH4.5-120
4148301638 130 - 133 8 7 x 14 6 x 12 DTH4.52DTH4.5-130
4148301639 140 - 133 8.2 7 x 14 6 x 12 DTH4.52DTH4.5-140
4148301640 150 - 153 9 7 x 14 6 x 12 DTH4.52DTH4.5-150
4148301641 82 - 85 3.4 6 x 14 3 x 12 DTH3302DTH330-85
4148301642 90 - 93 4.6 6 x 14 7 x 12 DTH3352DTH335-90
4148301643 105 - 108 7.7 8 x 14 7 x 13 DTH340/DTH345/DTH345
K
2DTH340-105
4148301644 115 - 118 8 8 x 14 7 x 13 DTH340/DTH345/DTH345
K
2DTH340-115
4148301645 130 - 133 10.5 8 x 14 8 x 13 DTH340/DTH345/DTH345
K
2DTH340-130
4148301646 130 - 133 17 7 x 16 7 x 14 DTH350/DTH355/DTH355
K
2DTH350-130
4148301647 140 - 143 18 7 x 16 7 x 14 DTH350/DTH355/DTH355
K
2DTH350-140
4148301648 152 - 155 19 6 x 16 6 x 14 DTH350/DTH355/DTH355
K
2DTH350-152
4148301649 152 - 155 25 8 x 16 11 x 14 DTH3602DTH360-152
4148301650 165 - 170 26.5 8 x 16 11 x 16 DTH3602DTH360-165
4148301651 178 - 183 28.6 8 x 16 11 x 16 DTH3602DTH360-178
4148301652 194 - 197 30 9 x 16 12 x 16 DTH3603DTH360-194
4148301653 203 - 206 32 9 x 16 13 x 16 DTH3603DTH360-203
4148301654 216 - 219 35 9 x 16 13 x 16 DTH3603DTH360-216
4148301655 230 - 233 37 12 x 16 16 x 16 DTH3603DTH360-230
4148301656 254 - 257 43 12 x 16 16 x 16 DTH3603DTH360-254
4148301657 305 - 308 57 14 x 18 26 x 16 DTH3603DTH360-305
4148301658 203 - 206 48 8 x 18 10 x 16 DTH3802DTH380-203
4148301659 216 - 219 50 9 x 18 13 x 16 DTH3803DTH380-216
4148301660 230 - 233 53 9 x 18 17 x 16 DTH3803DTH380-230
4148301661 254 - 257 58 9 x 18 16 x 16 DTH3803DTH380-254
4148301662 310 - 313 71 12 x 18 15 x 16 DTH3803DTH380-310
4148301663 350 - 353 80 16 x 18 36 x 16 DTH3804DTH380-350
4148301664 302 - 305 176 12 x 18 x 18 DTH31203DTH3120-302
4148301665 311 - 314 177 12 x 18 x 18 DTH31203DTH3120-311
4148301666 330 - 333 186 12 x 18 x 18 DTH31203DTH3120-330
4148301667 357 - 360 196 12 x 18 x 18 DTH31203DTH3120-357
4148301668 381 - 384 205 18 x 18 x 18 DTH31203DTH3120-381
4148301669 444 - 447 230 18 x 18 x 18 DTH31203DTH3120-444
4148301670 483 - 486 285 18 x 18 x 18 DTH31203DTH3120-483
4148301671 508 - 511 311 18 x 18 x 18 DTH31203DTH3120-508
Efficient High Pressure DTH Bits
Part Number Flushing Holes Ø (mm) Weight (kg) Gauge (# x mm) Front (# x mm) DTH HammerProduct Code
4148301672 110 - 113 8 7 x 14 6 x 12 DTH4402DTH440-115
4148301673 130 - 133 12 7 x 14 8 x 12 DTH4402DTH440-130
4148301674 130 - 133 15 6 x 13 3 x 12 DTH4502DTH450-130
4148301675 140 - 143 15.4 6 x 13 6 x 12 DTH4502DTH450-140
4148301676 152 - 155 19 8 x 14 7 x 13 DTH4502DTH450-152
4148301677 165 - 170 25 8 x 14 7 x 13 DTH4602DTH460-165
4148301678 178 - 181 27 8 x 14 8 x 13 DTH4602DTH460-178
4148301679 203 - 206 48 7 x 14 7 x 14 DTH4802DTH480-203
4148301680 216 - 219 50 7 x 14 7 x 14 DTH4802DTH480-216
4148301681 254 - 257 58 6 x 16 6 x 14 DTH4803DTH480-254

40. MIROC DTH Hammer Bits
DTH DRILLING TOOLS . 38
Low Pressure DTH Bits
Part Number Flushing Holes Ø (mm) Weight (kg) Gauge (# x mm) Front (# x mm) DTH HammerProduct Code
4148301682 68 - 72 1.5 4 x12 3 x 12 DTH651DTH65PQ
4148301683 75 - 77 2.4 5 x 12 3 x 12 DTH703DTH75PQ
4148301684 76 - 78 2.5 5 x 12 3 x 12 DTH762DTH76PQ
4148301685 78 - 82 2.6 5 x 12 3 x 12 DTH762DTH76-78
4148301686 82 - 84 3 5 x 12 6 x 12 DTH80, DTH80X3DTH80PQ
4148301687 90 - 95 3.6 6 x 14 4 x 12 DTH80, DTH80X3DTH90A
4148301688 90 - 95 3.4 6 x 12 4 x 12 DTH80XD3DTH80XD-90
4148301689 80 - 82 3 5 x 12 4 x 12 DTH80-II3DTH80-II-80
4148301690 90 - 95 3.8 6 x 14 4 x 12 DTH90, DTH90-I3DTH90B
4148301691 90 - 95 3.6 6 x 14 1 x 12, 3 x 12
(Spherical)
DTH90, DTH90-I2DTH90T1
4148301692 90 - 95 3.8 6 x 14
(Spherical)
4 x 12
(Spherical)
DTH90, DTH90-I2DTH90T2
4148301693 90 - 95 3.6 6 x 14 (Ballistic) 4 x 12
(Ballistic)
DTH90, DTH90-I3DTH90T3J
4148301694 90 - 95 3.6 5 x 14
(Spherical)
5 x 12 DTH90, DTH90-I2DTH90T5
4148301695 100 - 105 4 6 x 14 5 x 12 DTH90, DTH90-I3DTH90-100
4148301696 105 - 110 4.2 6 x 14 3 x 12 DTH90, DTH90-I3DTH90-105
4148301697 110 - 115 4.5 8 x 14 3 x 12 DTH90, DTH90-I3DTH90-110
4148301698 120 - 125 5 8 x 14 3 x 12 DTH90, DTH90-I3DTH90-120
4148301699 130 - 135 6.8 9 x 14 4 x 12 DTH90, DTH90-I3DTH90-130
4148301700 110 - 115 6.1 6 x 14 5 x 12 DTH1103DTH110-110
4148301701 110 - 115 6.3 6 x 14 5 x 12 DTH1103DTH110-115
4148301702 120 - 125 7 6 x 14 6 x 12 DTH1103DTH110-120
4148301703 125 - 130 7.1 6 x 14 7 x 12 DTH1103DTH110-125
4148301704 130 - 135 7.3 6 x 14 7 x 12 DTH1103DTH110-130
4148301705 135 - 140 8 6 x 14 7 x 12 DTH1103DTH110-135
4148301706 140 - 145 8.2 6 x 14 8 x 12 DTH1103DTH110-140
4148301707 150 - 155 9 6 x 14 8 x 12 DTH1103DTH110-150
4148301708 155 - 160 16.3 15 x 16 4 x 14 DTH1503DTH150-155
4148301709 160 - 165 17.3 15 x 16 5 x 14 DTH1503DTH150-165
4148301710 180 - 185 19.6 15 x 16 6 x 14 DTH1503DTH150-185
4148301711 200 - 205 23 9 x 16 12 x 14 DTH1503DTH150-200
4148301712 175 - 180 22.8 15 x 16 8 x 14 DTH1703DTH170-175
4148301713 185 - 190 23.24 15 x 16 8 x 14 DTH1703DTH170-185
4148301714 195 - 198 24 15 x 16 10 x 14 DTH1703DTH170-195
4148301715 200 - 203 25.8 15 x 16 9 x 14 DTH1703DTH170-200
4148301716 210 - 213 26.5 12 x 16 6 x 14, 6 x 16 DTH1703DTH170-210
4148301717 220 - 223 28.5 15 x 16 11 x 14 DTH1703DTH170-220
4148301718 230 - 233 32 15 x 16 12 x 14 DTH1703DTH170-230
4148301719 240 - 243 36 21 x 16 6 x 14 DTH1703DTH170-240
4148301720 250 - 253 45 15 x 16 4 x 14 DTH1703DTH170-250
Through Reverse Circulation DTH Bits
Part Number Flushing Holes Ø (mm) Weight (kg) Gauge (# x mm) Front (# x mm) DTH HammerProduct Code
4148301721 95 - 98 - 8 x 14 6 x 13 DTHF3352DTHF335-95
4148301722 105 - 108 - 8 x 14 6 x 13 DTHF3352DTHF335-105
4148301723 115 - 118 - 8 x 14 7 x 13 DTHF3452DTHF345-115
4148301724 130 - 133 - 8 x 14 7 x 13 DTHF3452DTHF345-130
4148301725 140 - 143 - 8 x 14 8 x 13 DTHF3552DTHF355-140
4148301726 152 - 155 - 8 x 14 7 x 13 DTHF3552DTHF355-152
4148301727 178 - 181 - 8 x 14 8 x 14 DTHF3652DTHF365-178
4148301728 194 - 197 - 8 x 14 8 x 14 DTHF3652DTHF365-194
4148301729 203 - 206 - 8 x 14 12 x 14 DTHF3652DTHF365-203
4148301730 203 - 206 - 8 x 14 12 x 14 DTHF3852DTHF385-203
4148301731 216 - 219 - 8 x 14 12 x 14 DTHF3852DTHF385-216
4148301732 254 - 257 - 10 x 18 14 x 16 DTHF31052DTHF3105-254
4148301733 273 - 276 - 10 x 18 16 x 16 DTHF31052DTHF3105-273
4148301734 305 - 308 - 10 x 18 20 x 16 DTHF31052DTHF3105-305
4148301735 311 - 314 - 10 x 18 20 x 16 DTHF31252DTHF3125-311
4148301736 355 - 358 - 10 x 18 24 x 16 DTHF31252DTHF3125-355
4148301737 381 - 384 - 10 x 18 26 x 16 DTHF31252DTHF3125-381