1.ODEX eccentric casing drill bit adopts expandable reaming wing design. Forward rotation expands for drilling & casing follow-up; reverse rotation retracts for smooth tool retrieval, effectively preventing hole collapse in loose formations.
2.Economical overburden drilling solution, ideal for shallow-hole construction in sand, clay and fine gravel strata. Widely used for solar pile holes, anchor holes, micro piles and shallow water well drilling.
3.Simple and robust mechanical structure, fewer vulnerable parts. Easy assembly, operation and maintenance, greatly lowering daily construction costs.
4.Equipped with wear-resistant tungsten carbide buttons, optimized flushing channels for efficient cuttings discharge, improving penetration speed in soft and medium formations.
5.Multiple diameters and thread specifications optional, compatible with various DTH hammers and casing tubes; perfectly matched with crawler DTH drilling rigs.
|
Model
|
Casing Tube O.D(mm)
|
Max.O.D. of Guide Device
|
Bit Diameter (Button included)
|
Casing Shoe I.D.
|
Max.Reaming O.D.
|
Hammer Style
|
|
108
|
Φ108
|
Φ92
|
Φ84
|
Φ86
|
Φ118
|
3inch
|
|
114
|
Φ114
|
Φ100
|
Φ92
|
Φ94
|
Φ124
|
3inch
|
|
127
|
Φ127
|
Φ110
|
Φ100
|
Φ102
|
Φ136
|
3-4inch
|
|
146
|
Φ145
|
Φ124
|
Φ115
|
Φ117
|
Φ156
|
4inch
|
|
168
|
Φ168
|
Φ146
|
Φ134
|
Φ138
|
Φ178
|
4inch
|
|
178
|
Φ178
|
Φ156
|
Φ144
|
Φ148
|
Φ193
|
4inch
|
|
183
|
Φ183
|
Φ160
|
Φ144
|
Φ152
|
Φ193
|
4inch
|
|
194
|
Φ194
|
Φ178
|
Φ165
|
Φ167
|
Φ208
|
6inch
|
|
219
|
Φ219
|
Φ203
|
Φ189
|
Φ193
|
Φ208
|
6-7inch
|
|
245
|
Φ245
|
Φ220
|
Φ206
|
Φ210
|
Φ208
|
6-8inch
|
|
273
|
Φ273
|
Φ256
|
Φ238
|
Φ242
|
Φ208
|
8inch
|
|
325
|
Φ325
|
Φ297
|
Φ280
|
Φ285
|
Φ208
|
8-10inch
|
|
377
|
Φ377
|
Φ351
|
Φ328
|
Φ333
|
Φ208
|
10-12inch
|
