Description
1. The popular sizes of drill rod are 8", 10", 11 1/4", 12 7/8" with DI-22 thread connection.
2. Since 2007 HHF started to export drill rods to overseas market, up to now no any disputes from Client. 
3.HHF annual production capacity is 1200 pieces , HHF is top 3 producer for raise bore drill rod in China. 
 4.We can provide Mill certificates: Chemical compostition, Mechnical properties, UT test, MPI  test etc

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Parameter

4330V Chemical Composition

Elements

C

Mn

P

S

Si

Ni

Cr

Mo

V

Min

0.28

0.45

 

 

0.10

2.00

0.80

0.40

0.05

Max

0.37

0.65

0.02

0.02

0.30

3.00

1.10

0.65

0.15

 

Size:

Inch

OD

ID

ID1

L

DI22 Thread

in

mm

in

mm

in

mm

in

mm

in

8

8

204

4

101.6

6  5/32

156.4

53 1/2

1359

6 3/4

10 1/8

10 1/8

258

4

101.6

7  7/16

188.9

65 7/8

1673

8 1/4

10 1/4

10 1/4

261

4

101.6

7  7/16

188.9

65 7/8

1673

8 1/4

11 1/4

11 1/4

286

4 3/4

120.6

7 11/16

195.2

66 3/8

1685

9 1/4

12 7/8

12 7/8

327

5  5/16

134.9

8  5/8

219

68

1727

10 1/8

14

14

356

4 3/4

120.6

9

228.6

80

2032

11

 

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