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Zhuzhou Changhong Mining Machinery Co.,Ltd.
Zhuzhou Changhong Mining Machinery Co.,Ltd. is located in Zhuzhou Hunan, which has rich and valuable experience in manufacturing mining & engineering products. The company is informed with the product
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Overburden Drilling System Low Air Pressure Overburden Drill Bits

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Zhuzhou Changhong Mining Machinery Co.,Ltd.

Overburden Drilling System Low Air Pressure Overburden Drill Bits

Use : Ore Mining,Well Drilling,Coal Mining,Rock Drilling

Machine type : Drilling Tool

Type : Drill Bit

Material : Tungsten Carbide & Steel

Processing type : Forging,Casting

Application : Mining or Quarry or well drilling

Color : golden

Advantage : High Wear Resistant

Diameter : 3 inch to 10 inch

Usage : water well drilling

Working pressure : 4-13(bar)

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Overburden Drilling System low air pressure overburden drill bits

Brief introduction of our dirlling system:

ODEX TypeRecommended Casing SizeMin. Wall ThicknessPilot Bit DiameterReamer DiameterFor Shanks of Hammer
Max. ODMin. ID
mminchmminchmminchmminchmminch
901154 1/21024615/64903 35/641234 27/32DHD3.5, Cop34, Mission 30
1151425 19/321254 59/6479/321154 17/321556 7/64DHD340A, SD4, QL40, Mission40
1151465 3/41285 3/6479/321164 9/161526
1401686 5/81525 63/6485/161405 1/21897 7/16DHD350R, SD5, QL50, Mission50
14417871606 19/64923/641445 9/161927 9/16
1651967 23/321837 13/64615/641666 17/322118 19/64DHD360, SD6, QL60, Mission60
1802198 5/81947 5/8615/641797 3/642329 1/8
1902198 5/82058 1/1679/321917 1/22369 19/64
1902198 5/82058 1/1679/321917 1/22369 19/64DHD380, QL80, SD8, Mission 80
23027310 3/42509 27/3211.529/642299 1/6428611 1/4
24027310 3/42509 27/3211.529/642419 31/6430812 1/8
28032412 3/4305129.53/828011 1/6437814 57/64SD10, NUMA100

DTH bits specifications:

Hammer inchBits diameterShank
MetricInch
1"64mm-70mm2 1/2"-2 3/4"BR1
2"70mm-95mm2 3/4"-3 3/4"MACH20/BR2
3"90mm-102mm3 1/2"-4"COP32/COP34/MACH303
M30/DHD3.5/BR3
4"105mm-152mm4 1/8"-6"COP44/DHD340/MACH44
SD4/M40/QL40
5"133mm-165mm5 1/4"-6 1/2"COP54/DHD350R/MACH50
SD5/M50/QL50/BR5
6"152mm-254mm4 1/8"-10"COP64/DHD360/SD6
M60/QL60/Bulroc BR6
8"203mm-330mm8"-13"COP84/DHD380/SD8
QL80/M80
10"254mm-380mm10"-15"SD10
NUMA100
12"305mm-508mm12"-20"DHD1120/SD12
NUMA120/NUMA125


Picture of high air pressure DTH drill bit:

Contact information:

Ashary You

Email: ashary.you@gmail.com

HP&Whatsapp: 86-13873343601


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