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Double Wall Casing Pipe

Double-walled casings are used for stabilising boreholes in collapsible soil conditions. Casing and joints are designed for resisting the forces of rotary drilling-rigs or casing oscillators.

We can design and manufacture drilling rigs and piling machine according to customers requirements.

Double-walled casings are used for stabilising boreholes in collapsible soil conditions. Casing and joints are designed for resisting the forces of rotary drilling-rigs or casing oscillators.
1. Dirt and gravel road maintenance
2. Hard-packed snow and ice removal
3. Chip and seal road reclamation
4. Tar sand road reclamation
5. Spot asphalt milling
6. Spreading loose material
7. Mixing calcium chloride,magnesium, chloride, or other dust suppressants
Technical Parameters
D1/D2
L
a1
(mm)
a2
(mm)
T
(mm)
2m
3m
4m
5m
6m
kg
620/540
781
1125
1485
1839
2186
12
8
40
750/670
852
1378
1806
2234
2665
12
8
40
800/720
1026
1489
1949
2417
2882
12
8
40
880/800
1128
1635
2139
2650
3159
12
8
40
900/820
1154
1673
2188
2711
3231
12
8
40
1000/920
1364
1860
2443
3025
3604
12
8
40
1180/1100
1662
2433
3205
3972
4753
16
8
40
1200/1120
1704
2487
3276
4061
4851
16
8
40
1300/1220
1834
2687
3542
4394
5245
16
8
40
1500/1400
2816
4041
5266
6492
7717
20
10
50
1800/1700
3394
4870
6347
7824
9301
20
10
50

Casing Shoe
Casing shoes are important key elements on a casing string, especially when working in hard soil conditions or when constructing secant pile walls. Cutting rings on the cutting shoe are supplied either with weld-on teeth or with replaceable cutting teeth.

Technical Parameters
D
(mm)
d
(mm)
h
(mm)
Teeth quantity
(mm)
Weight
620
540
586
9
280
750
670
586
10
335
800
720
586
11
368
880
800
586
13
408
900
820
586
14
419
1000
920
586
15
468
1180
1100
586
17
557
1200
1120
586
18
567
1300
1220
586
19
615
1500
1420
586
22
1023
1800
1720
586
26
1235
2000
1880
586
30
1796
2500
2380
848
38
2261

Casing Drive Adapter (Casing Twister)
Casing drive adapter transfer the torque from the rotary drive onto the top of the casing string.
Casing Pipe
φ(mm)
D
(mm)
B
(mm)
Height
H(mm)
Weight
620/540
70
848
1794
679
750/670
70
848
1794
759
800/720
70
848
1794
816
880/800
70
848
1794
870
900/820
70
848
1794
894
1000/920
70
848
1794
1015
1180/1100
70
848
1794
1202
1200/1120
70
848
1794
1235
1300/1220
70
848
1794
1343
1500/1400
70
848
1794
2019
1800/1700
70
848
1794
2580
2000/1880
70
848
1794
3673
2500/2380
70
848
1794
5072

Casing Connector

2 types of bolt connection systems are available: mechanical connection (bolts are fixed manually), automatic locking device.
Technical Parameters
Type
D
B
Weight
A
74.5
38
1
B
98.5
59
3

D1/D2
(mm)
H
(mm)
b
(mm)
n
(pc)
hole
(pc)
bolt
Weight
620/540
350
40
8
8
A
233
750/670
350
40
10
10
A
285
800/720
350
40
10
10
A
304
880/800
350
40
10
10
A
333
900/820
350
40
10
10
A
341
1000/920
350
40
10
10
A
381
1180/1100
350
40
12
12
A
438
1200/1120
350
40
12
12
A
450
1300/1220
350
40
12
12
A
483
1500/1400
480
50
12
12
A
950
1800/1700
480
50
16
16
A
1146
2000/1880
480
60
12
12
B
1745
2500/2380
480
60
16
16
B
2197
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