Junk sub

PRODUCTS

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