Casing Tubes

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Application Range: It is suitable for drilling water wells, geothermal wells, short miscopies, medium mini-type grouting hole of building, dam and harbor project.
Design Principles: Make the casing follow easy and the equipment and operation simple.
Outstanding Advantages: Simple structure, easy operation, reliable quality, retrievable drilling tools, and long service life.

Specifications

C: thread of the casing tube
L: length of the casing tube
L1: length of the tool joint
D: O.D of the casing tube
H: Thickness of the casing tube

Casing Tube with Tool Joint

Model(D)	Thickness(h)	Thread(C)	Direction of rotation	Length(L)	Weight	Product Code
108	7	Square thread	Left	1500	27.1	M108/7-15-S
114	6.5	Square thread	Left	1500	31	M114/6.5-15-S
127	9.5	Circular-arc Thread	Left	1500	43.7	M127/9.5-15-C
127	6.5	Circular-arc Thread	Left	1500	35	M127/6.5-15-C
146	10	Circular-arc Thread	Left	1500	53.7	M146/10-15-C
168	10	Circular-arc Thread	Left	1500	62.4	M168/10-15-C
178	9	Circular-arc Thread	Left	1500	61.8	M178/9-15-C
194	10	Circular-arc Thread	Left	1500	73	M194/10-15-C
219	10	Circular-arc Thread	Left	1500	85.7	M219/10-15-C
273	10	Circular-arc Thread	Left	1500	107.7	M273/10-15-C
325	12	Circular-arc Thread	Left	1500	154.7	M325/12-15-C

A: Discharge Head
B: Drill Rod
C: Guide Sleeve
D: DTH Hammer
E: Casing Tube
F: Guide Device
G: Casing Shoe
H: Reamer
I: Pilot Bit

Operation Procedure

1. When drilling starts, the reamer opens and enlarges the hole to drive the casing shoe and casing tube down.

2. When the drilling in over-burden formation is finished, reverse the rotation to close the reamer, then the assembly can be pulled up through the casing tube.

3. The casing tube can be left in the hole, or can be pulled out by means of grout sealing material.

4. Use the normal drilling tools to drill and achieve to the desired depth.