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TOA-TONE BORING CO.,LTD.

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Drilling tools are accessories to be utilized with drilling machine for a variety of drilling applications required for drilling and coring, and consist of drill rod, casing pipe, bit, sampler and lowering/lifting tool.

Product introduction

Type Nominal size
Drill rod With coupling T40.5、T50、T60B
Friction welded type MT50、MT60、T73、T90、T120、T140
For SONIC Drill SONIC 4-1/2"、SONIC N 6-5/8"、SONIC 8-5/8"
wireline rod AQT、BQT、NQT、HQT、PQT、NTG、HTG
SONIC wireline tools For SONIC Drill TS-118
Shield Pipe For horizontal drilling TR80、TR105、TR130、TR165、TR216
Casing pipe For bored wall potection 43、53、63、73、83、97、112、127、101.6（For EP drill series）
Hoisting Water Swivel Water circulation tools CH、DH、EH、FH-6、FH-12
Hoisting Swivel Lifting/lowering tools B-4、B-6、B-7
Rod Holder Holding tools RH-45、RH-85

TOA-TONE BORING CO.,LTD.

Drill Rod

Drill rod or drill pipe is an important tool to transmit the rotation and feed force generated by drilling machine to drill bit. Drill rod has another function to deliver circulation fluid from drilling pump to drill bit through inside drill rod for cooling the bit and for discharging the cuttings to ground surface.

Drill Rod (with coupling)

This rod has structure with threads on both ends and is fitted with coupling at one end.
Nominal size Outer diameter
（mm）

D1		 Inner diameter
（mm）

D2		 Wall thickness
（mm）

ｔ		 Coupling ID
（mm）

D3		 Sandard length
（m）

L		 Weight
（kg/m）		 Remarks
T40.5 40.5 31 4.75 17 1 4.6 JIS Standard
T50 50 37 6.5 22 1 6.5 〃
T60B 60 47 6.5 25 1 11 〃

Drill Rod (friction welded type)

This rod has a solid structure by rotary friction welding a coupling and tubing material.
Rotary friction welding method joins two steel objects by utilizing frictional energy generated by high speed rotational contact of two steel objects, by adding high pressure force.
Nominal size Outer diameter
（mm）

D1		 Inner diameter
（mm）

D2		 Wall thickness
（mm）

ｔ		 Coupling ID
（mm）
D3		 Sandard length
（m）

L		 Weight
（kg/m）		 Remarks
On male threads On female threads
MT50 50 37 6.5 22 22 1 8.2 EP: ECOPROBE
MT60 60 47 6.5 26 26 1 10.2 〃
T73 73.1 59.1 7 35 44 3 11.8 For water well drilling
T90 88.9 74.9 7 44 50 3 15.5 〃
T120 (3-1/2IF) 120.7 102.7 9 68 68 3 28 〃
T140 (4 IF) 139.8 119.8 10 80 80 3 38 〃
※ EP: ECOPROBE

Drill Rod (for Sonic Drill)

This rod which is exclusively utilized for SONIC drill is manufactured by combining multiple steel materials under special heat treatment.
Nominal size Outer diameter
（mm）

D1		 Inner diameter
（mm）

D2		 Wall thickness
（mm）

ｔ		 Coupling ID
（mm）
D3		 Sandard length
（m）

L		 Weight
（kg/m）		 Remarks
On male threads On female threads
SONIC 4-1/2" 114.3 99.7 7.3 76.2 76.2 3 22 For SD
SONIC N 6-5/8" 168.3 153.7 7.3 127.6 139 3 34.8 〃
SONIC 8-5/8" 219.1 205.1 7 181 181 3 44.5 〃
※ SD: SONIC Drill

Wireline Drill Rod

Wireline drill rod is designed to pass inner tube freely inside this rod. This rod has female and male threads on each tube end without the use of coupling and has a structure of flush inner surface.
Friction welded type for BQT, NQT, HQT, NTG and HTG size will be optionally available.
Nominal size Outer diameter
（mm）

D1		 Inner diameter
（mm）

D2		 Wall thickness
（mm）

ｔ		 Coupling ID
（mm）

D3		 Sandard length
（m）

L		 Weight
（kg/m）		 Remarks
AQT 44.5 35 4.75 － 3 4.6 Core recovery
BQT 55.6 46 4.8 － 3 6 〃
NQT 70 60.3 4.85 － 3 7.8 〃
HQT 88.9 77.8 5.55 － 3 11.4 〃
PQT 114.3 103.2 5.55 － 3 15.5 〃
NTG 70 60.3 4.85 54 3 8.5 〃
HTG 88.9 77.8 5.55 70 3 12 〃

SONIC Wireline tools

Sonic Wireline sampling tool is developed specifically for SONIC Drill with powerful vibration force.
SONIC Wireline tools eliminates the need for raising and lowering the drill rod after each sample collection, which results in a significant improvement in operational efficiency.

SONIC Wireline tools

Only a small amount of water is required for the sonic wireline sampling by this tool. This makes it easier to work in various formation with high groundwater levels.
Nominal size SONIC Wireline rod SONIC Wireline bit
Outer diameter
（mm）		 Inner diameter
（mm）		 Weight
（kg/m）		 Set outer diameter
（mm）		 Set Inner diameter
（mm）
TS11811810024.712668

Shield Pipe

Shield pipe is utilized for horizontal drilling for dewatering, water drainage or coring purpose. Horizontal drilling contains very severe drilling conditions such as the decline of cutting disposal efficiency, frequent occurrence of water gush and collapse compared with vertical hole drilling, in addition, siheld pipe to be used for horizontal drilling requires high durability to bear high rotating torque.

Shield Pipe

Horizontal drilling aiming water drainage uses down-the-hole hammer for hard rock or gravel and boulder layer, and tricone bit for medium formation. This drilling aiming coring purpose is normally using wireline core barrel or duplex pipe reverse circulation system. "TR" type shield pipe has enough wall thickness using high tensile steel tubing and has double-start threads for easy connection or disconnection of pipe.
Nominal size Outer diameter
（mm）

D1		 Inner diameter
（mm）

D2		 Wall thickness
（mm）

ｔ		 Sandard length
（m）

L		 Weight
（kg/m）		 Remarks
TR80 80 68 6 1 10.8 Horizontal drilling
TR105 105 90 7.5 1 18 〃
TR130 130 115 7.5 1 22.8 〃
TR165 165.2 145.2 10 1 38 〃
TR216 216.3 195.7 10.3 1 52.3 〃

Casing Pipe

Casing pipe is the tubing to be installed in the drilled hole to protect bored hole from caving while drilling. In addtion to bored hole protection, casing pipe has the functions for the prevention of lost circulaton, the reduction of friction between drill rod and bored hole, and for making the recovery of drill strings left in the hole by the accident easier.

Casing Pipe

We may offer casing pipes to be used for geological investigation up to 100 m depth.
Nominal size Outer diameter
（mm）

D1		 Inner diameter
（mm）

D2		 Wall thickness
（mm）

ｔ		 Sandard length
（m）

L		 Weight
（kg/m）		 Remarks
43 43 37 3 3 3.0 JIS Standard
53 53 47 3 3 3.7 〃
63 63 57 3 3 4.4 〃
73 73 67 3 3 5.2 〃
83 83 77 3 3 6.0 〃
97 97 90 3.5 3 8.1 〃
112 112 105 3.5 3 9.4 〃
127 127 118 4.5 3 13.6 〃
142 142 133 4.5 3 15.8 〃
101.6 101.6 91.6 5 1 11.9 For EP drill series
※ EP: ECOPROBE

Hoisting Water Swivel

Water swivel has a function for circulating drilling fluid from mud pump through rotating drill rod while drilling. The one side is connected with swivel hose and the other side is connceted with drill rod. When drill rod connected with water swivel is lowered or lifted, water swivel is connected with hoisting wire rope by the pin, and water swivel is hence called as hoisting water swivel.

Hoisting Water Swivel

We offer hoisting water swivels with load capacity of 1 - 12 tons.
Model Load capacity
(t)		 Max. pressure
(MPa)		 Max. rotation speed
(rpm)		 Max. flow volume
(L/min)
CH 1 2.5 900 80
DH 2 2.5 900 130
EH 4 2.5 900 130
FH-6 6 6.9 500 500
FH-12 12 6.9 300 850

Hoisting Swivel

Hoisting swivel which end is connected with the socket of hoisting wire rope is used for lifting and lowering drill rod or casing pipe. There are two types of hoisting swivels. The one is telescopic spindle type (Model B-6, B-7 and B-8) to protect the threads of drill strings when disconnecting, and the other is fixed spindle type (Model B-4) with swivel system only.

Hoisting Swivel

We offer hoisting swivels with load capacity of 2 - 30 tons.
Model Load capacity
(t)		 Type of wire socket
(No.)		 Size of wire rope
(mm)
B-4 2 4 9～12.5
B-6 10 6 14～18
B-7 20 7 18～20
B-8 30 8 22.4～25

Rod Holder

Rod holder is used for holding drill rod at ground surface when lifting from the hole or lowering into the hole. There are two types of rod holder. The one is manual type with two jaws and frame (Model RH-45, RH-85) and the other is hydraulically clamping type (Model CH-60A).

Rod Holder

We offer manual or hydraulic type rod holder.
Model Load capacity
(t)		 Max. rod size
(mm)		 Operating method Remarks
RH-45 6 44.5 Manual 　
RH-85 6 90 Manual 　
CH-60A 6 90 Hydraulic Set pressure: 3.9 MPa