Product description:
Tube configurations can be discussed for different drilling depths and connection methods.
Product advantages:
Good metallurgical structure
High straightness
Low residual stress
High dimensional accuracy and low eccentricity
Product specifications
Specifications:
O.D 30-139.7 mm, WT 3-19mm
Standards:
GB/T 9808 Seamless steel tubes for drilling
GB/T 16950, Geological core drilling tools
DIN2391, Precision seamless steel tubes
EN10305-1, Steel tubes for precision applications — Technical delivery conditions — Part 1: Seamless cold-drawn tubes
ASTM A519, Seamless carbon and alloy steel mechanical tubing
DCDMA, American diamond core drilling standards
BS4019, Specification for rotary core drilling equipment
JIS G3465, Seamless steel tubes for drilling
According to customer-specific technical requirements
Steel grades:
45MnMoB, 30CrMnSiA, 30CrMo, 42CrMo, 40Mn2 ; 34CrMo4, 42CrMo4 ; 4130, 4135, 4140, 1541 and other grades
Delivery conditions:
Cold finished and stress relieved (+SR) (BKS)
Normalized (+N) (NBK)
Quenched and tempered (QT)
Standard sizes
|
Size |
Wireline core drilling rods |
Size |
Casing |
||
|
O.D. (mm) |
I.D. (mm) |
O.D. (mm) |
I.D. (mm) |
||
|
Nom. Reference |
Nom. Reference |
Nom. Reference |
Nom. Reference |
||
|
A |
44.45 |
35.05 |
AW |
57.1 |
48.4 |
|
B |
55.55 |
46.05 |
BW |
73.0 |
60.3 |
|
N |
69.85 |
60.45 |
NW |
88.9 |
76.2 |
|
H |
88.90 |
77.80 |
HW |
114.3 |
101.6 |
|
P |
114.30 |
101.60 |
PW |
139.7 |
127.0 |
|
S |
139.70 |
125.50 |
|||
|
Size |
Outer tube |
Inner tube |
||
|
O.D. (mm) |
I.D. (mm) |
O.D. (mm) |
I.D. (mm) |
|
|
Nom. Reference |
Nom. Reference |
Nom. Reference |
Nom. Reference |
|
|
A |
46.05 |
36.50 |
32.54 |
28.58 |
|
B |
57.15 |
46.05 |
42.85 |
38.10 |
|
N |
73.03 |
60.33 |
55.58 |
49.99 |
|
H |
92.08 |
77.80 |
73.03 |
66.80 |
|
P |
117.48 |
101.60 |
95.25 |
88.90 |
|
S |
142.88 |
125.50 |
117.00 |
111.00 |
Chemical composition
|
Steel grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
B |
|
45MnMoB |
0.43-0.48 |
0.17-0.37 |
1.05-1.35 |
≤0.020 |
≤0.015 |
0.20-0.25 |
0.001-0.005 |
|
|
4130 |
0.28-0.33 |
0.15-0.35 |
0.40-0.60 |
≤0.040 |
≤0.040 |
0.80-1.10 |
0.15-0.25 |
|
|
1541 |
0.36-0.44 |
– |
1.35-1.65 |
≤0.040 |
≤0.050 |
|||
|
30CrMnSiA |
0.28-0.34 |
0.90-1.20 |
0.80-1.10 |
≤0.020 |
≤0.015 |
0.80-1.10 |
||
|
4140 |
0.38-0.43 |
0.15-0.35 |
0.75-1.00 |
≤0.040 |
≤0.040 |
0.80-1.10 |
0.15-0.25 |
Mechanical properties
| Model |
Steel grade |
Delivery condition |
Tensile strength Min |
Yield strength Min |
Elongation Min |
| DX600 |
45MnMoB |
Normalized (+N) |
790 |
600 |
14% |
| DX690 |
4130 |
Stress relieved (+SR) |
813 |
690 |
15% |
| DX730 |
1541 |
Stress relieved (+SR) |
820 |
730 |
15% |
| DX750 |
30CrMnSiA |
Quenched and tempered (QT) |
850 |
750 |
14% |
| DX850 |
4140/4130 |
Quenched and tempered (QT) |
950 |
850 |
14% |
| DX950 | 4130/4140 | Quenched and tempered (QT) | 1050 | 950 | 13% |
Applications
-
Drill rod tubes
-
Outer and inner tubes for drilling tools
-
Casing tubes
-
Drill rod coupling tubes