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Beijing Jietaihongli Technology Co., Ltd.
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45-55hrc Tungsten Carbide Tricone Roller Cone Drill Bits For Core Barrel

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45-55hrc Tungsten Carbide Tricone Roller Cone Drill Bits For Core Barrel

Brand Name : jthl

Model Number : b47k22h

Place of Origin : beijing

MOQ : 10

Price : USD+200-400 +set

Payment Terms : L/C, D/P, T/T, Western Union

Supply Ability : 10000+set +year

Packaging Details : exported standard package, wooden case

material : tungsten carbide , 42Crmo

application : foundation pile

hardness : 45-55hrc

condition : 100% new

Oem : available

application layer : Soil, Earth, Rock, Clay, Mud, Etc.

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45-55hrc Tungsten Carbide Tricone Roller Cone Drill Bits For Core Barrel

Applicable layers: dense sand, gravel, hard rocks and very hard formation, etc..
Sizes: From 2 7/8 to 26"larger sizes for hole opener bit ,reamer bit.
Type: 437,517,537,617,637
Hardness: 50-54 or higher HRC

ROLLER BITS IADC CODE SELECTION

IADC WOB RPM
(KN/mm) (r/min)
111/114/115 0.3-0.75 200-80
116/117 0.35-0.8 150-80
121 0.3-0.85 200-80
124/125 180-60
131 0.3-0.95 180-80
136/137 0.35-1.0 120-60
211/241 0.3-0.95 180-80
216/217 0.4-1.0 100-60
246/247 0.4-1.0 80-50
321 0.4-1.0 150-70
324 0.4-1.0 120-50
437/447/435 0.35-0.9 240-70
517/527/515 0.35-1.0 220-60
537/547/535 0.45-1.0 220-50
617/615 0.45-1.1 200-50
637/635 0.5-1.1 180-40
Note: Above limitts of WOB and RRPM should not be used simultaneously

ROLLER PIN SIZE

Bit Diameter API PIN
(Inch) (mm)
3 7/8''~5 1/4'' 98~134 2 3/8''. 2 7/8''
5 5/8''~6 3/4'' 143!171 3 1/2''
7 1/2''~9 1/2'' 190.5~241 4 1/2''
9 5/8''~13 3/4'' 245~350 6 5/8''
14 5/8''~26'' 371~660.4 7 5/8''

45-55hrc Tungsten Carbide Tricone Roller Cone Drill Bits For Core Barrel45-55hrc Tungsten Carbide Tricone Roller Cone Drill Bits For Core Barrel

45-55hrc Tungsten Carbide Tricone Roller Cone Drill Bits For Core Barrel

45-55hrc Tungsten Carbide Tricone Roller Cone Drill Bits For Core Barrel


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