Junk sub
During drilling operation, the complex bottom hole environment will cause repeated cutting, affect the service life of bit, especially diamond bit, and reduce the drilling speed.Junk sub is a kind of practical and effective tool while drilling, which is used to catch heavy cuttings or metal debris which can not be brought out by normal circulation .
The junk sub is made of high quality alloy steel after heat treatment.
Product parameter is in the following blank:
|
PN |
Applicable hole size (mm) |
Screw Thread |
Waterhole Diameter (mm) |
Outside Diameter (mm) |
Overall Length (mm) |
|
LB82 |
95.2~114.3 |
NC23 2 3/8 REG |
20 |
82 |
775 |
|
LB94 |
108~117.5 |
2 3/8 REG |
20 |
94 |
800 |
|
LB102 |
117.5~124 |
2 7/8 REG |
32 |
102 |
749 |
|
LB105 |
117.4~124 |
2 7/8 REG |
32 |
105 |
749 |
|
LB114 |
130~149 |
3 1/2 REG |
38 |
114 |
775 |
|
LB127 |
152~162 |
NC31 3 1/2 REG |
38 |
127 |
775 |
|
LB140 |
165~190.5 |
3 1/2 REG |
38 |
140 |
775 |
|
LB143 |
165~190.5 |
3 1/2 REG |
38 |
143 |
775 |
|
LB146 |
190.5~238.2 |
3 1/2 REG |
38 |
146 |
775 |
|
LB165 |
190.5~216 |
NC50 |
57 |
165 |
825 |
|
LB168 |
190.5~216 |
4 1/2 REG |
57 |
168 |
800 |
|
LB178 |
219~244.5 |
4 1/2 REG |
57 |
178 |
800 |
|
LB190 |
229~273 |
4 1/2 REG |
57 |
190 |
838 |
|
LB197 |
235~279.5 |
5 1/2 REG |
70 |
197 |
838 |
|
LB200 |
241.3~349.3 |
4 1/2 REG |
57 |
200 |
838 |
|
LB203 |
241.3~349.3 |
4 1/2 REG |
70 |
203 |
838 |
|
LB219 |
244.5~295 |
6 5/8 REG |
89 |
219 |
838 |
|
LB229 |
254~305 |
6 5/8 REG |
70 |
229 |
838 |
|
LB245 |
292~330 |
6 5/8 REG |
89 |
245 |
838 |
|
LB280 |
327~375 |
7 5/8 REG |
89 |
280 |
914 |
|
LB286 |
327~375 |
7 5/8 REG |
89 |
286 |
914 |
|
LB304 |
355.6~365.1 |
6 5/8 REG |
89 |
304 |
914 |
|
LB311 |
355.6~365.1 |
7 5/8 REG |
76 |
311 |
800 |
|
LB327 |
375~444.5 |
6 5/8 REG |
71.4 |
327 |
1014 |
|
LB340 |
386~456 |
7 5/8 REG |
102 |
340 |
1014 |
|
LB420 |
447.7~469.9 |
7 5/8 REG |
71.4 |
420 |
950 |
