Our raw material is from 320*480 large-section continuous casting billet, then rolling into 150*150 square billet by drilling holes and inserting seamless pipe, and made of 55SiMnMo or 95 crmo. The whole production involves multiple processes, including steel rolling, forging, quenching and tempering, etc. According to the different choices of customers, our company has different quality products, such as extra-excellent, excellent, ordinary drilling rod, etc. Customers can choose suitable drilling rod according to different hardness of rock and types of jack hammer. Extra-excellent drilling rod QSAAA and GTIII can be applied to solid rock, III level or above and f≥12 rocks according to Protodikonov’s Hardness Coefficient of Rock. Excellent drilling rod QSAA and G30 is suitable for IV level or above and f≥12 rocks, ordinary drilling rod suitable for IV level or below and f≤8 rocks.
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Drill rod
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Length
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Piece
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Weight
approx(kg)
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|
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Hex.22 Tapered rod
Shank Length 108mm Tapered Angle 7º Shank hole diameter 7.5±0.3 Body hole diameter ≥5.5 |
Millimeter(mm)
|
Foot
|
||
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1000
|
3’3’’
|
100
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315
|
|
|
1200
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3’9’’
|
100
|
370
|
|
|
1400
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4’6’’
|
100
|
435
|
|
|
1500
|
4’9’’
|
100
|
465
|
|
|
1600
|
5’2’’
|
100
|
495
|
|
|
1800
|
5’9’’
|
100
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555
|
|
|
2000
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6’6’
|
100
|
620
|
|
2200
|
7’2’’
|
100
|
680
|
|
2400
|
7’9’
|
100
|
740
|
|
2500
|
8’2’’
|
100
|
770
|
|
2600
|
8’5’’
|
100
|
800
|
|
2800
|
9’2’’
|
100
|
860
|
|
3000
|
9’8’’
|
100
|
920
|
|
3300
|
10’8’’
|
100
|
1010
|
|
3500
|
11’5’’
|
100
|
1070
|
|
4000
|
13’1’’
|
100
|
1220
|
|
4500
|
14’8’’
|
100
|
1370
|
|
Type: QSAAA QSAA G30 GTⅢ
Note: according to the requirement of customers, we can offer raw material as follows: 95CrMo, 23CrNi3Mo, 40SiMnCrNiMo, 35SiMnMoV |
5000
|
16’’4’’
|
100
|
1520
|
|
5500
|
18’1’’
|
50
|
835
|
|
|
6000
|
19’7’’
|
500
|
915
|
Post time: Aug-05-2021