9

CASING PIPE ø318.5mm (12 17/32")

318.5

(12 17/32")

10.3

(0.41")

8.4

(0.33")

6.9

(0.27")

Single pass

Normal

Multi use

20.0

20.4

19.1

20.5

20.9

21.2

270

10.63"

270

10.63"

270

10.63"

270

10.63"

270

10.63"

270

10.63"

270

10.63"

270

10.63"

270

10.63"

335

13.19"

335

13.19"

335

13.19"

335

13.19"

335

13.19"

335

13.19"

335

13.19"

335

13.19"

335

13.19"

295

11.61"

295

11.61"

295

11.61"

295

11.61"

295

11.61"

295

11.61"

295

11.61"

295

11.61"

295

11.61"

270A

270A

270X

270D

270D

270C

Single pass

Normal

Normal

US270A-08-R-418

US270A-10-R-069

UN270A-08-R-419

UN270A-10-R-070

UM270X-08-R420

UM270X-10-R421

US270D-10-R-437

UN270D-10-R-438

UN270C-10-R-348

DHD380

QL80

SD8

DHD310

SD10

DHD380

QL80

SD8

DHD310

SD10

DHD380

QL80

SD8

DHD310

SD10

DHD310

SD10

DHD310

SD10

DHD310

SD10

121.4
121.0
114.6
143.5
139.5

121.4
121.0
114.6
143.5
139.5

121.4
121.0
114.6
143.5
139.5

143.5
139.5

143.5
139.5

143.5
139.5

270A Pilot bit

270A Pilot bit

270A Pilot bit

270A Ring bit

270A Pilot bit

270A Ring bit

270A Pilot bit

270A Ring bit

CASING PIPE ø300.0mm (11 13/16")

300.0

(11 13/16")

8.0

(0.31")

Single pass

17.2

254

10.00"

315

12.40"

281

11.06"

254A

US254A-08-R-273

DHD380

QL80

SD8

112.0
111.6
105.2

Casing Pipe

Ring Bit

Pilot Bit

Wall Max.

Thickness

Type

Model

Compatible

Part

System Part

Number

Outer

Dia.

Inner

Dia.

Hammer

Weight

(kg)

Weight

(kg)

Ri

n

g S

e

t

(R

in

g B

it &

Ca

sing

 Shoe

)

D

2

D

4

Outer

Dia.

D

1

Outer

Dia.

D

3

t

Unit: mm  (Upper)

inch (Bottom)

Note 1) Normal model enables to be re-used in case of short hole drilling.
Note 2) To order, please advise the system type, casing size / hammer size and the ring bit models.
Note 3) Special types are also available according to costomer's request.

DIMENSIONS

y

 Standard Type ULTRA MAXBIT / DTH