JPH0571757B2 - - Google Patents

Info

Publication number
JPH0571757B2
JPH0571757B2 JP6748088A JP6748088A JPH0571757B2 JP H0571757 B2 JPH0571757 B2 JP H0571757B2 JP 6748088 A JP6748088 A JP 6748088A JP 6748088 A JP6748088 A JP 6748088A JP H0571757 B2 JPH0571757 B2 JP H0571757B2
Authority
JP
Japan
Prior art keywords
rod
rotary head
cylinder
drilling
kelly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP6748088A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6490390A (en
Inventor
Bauaa Kaaruhaintsu
Haabaraa Hansu
Isao Inoe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eneos Corp
Original Assignee
Nippon Petrochemicals Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Petrochemicals Co Ltd filed Critical Nippon Petrochemicals Co Ltd
Priority to JP6748088A priority Critical patent/JPS6490390A/ja
Publication of JPS6490390A publication Critical patent/JPS6490390A/ja
Publication of JPH0571757B2 publication Critical patent/JPH0571757B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
JP6748088A 1988-03-23 1988-03-23 Boring machine Granted JPS6490390A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6748088A JPS6490390A (en) 1988-03-23 1988-03-23 Boring machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6748088A JPS6490390A (en) 1988-03-23 1988-03-23 Boring machine

Publications (2)

Publication Number Publication Date
JPS6490390A JPS6490390A (en) 1989-04-06
JPH0571757B2 true JPH0571757B2 (cs) 1993-10-07

Family

ID=13346178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6748088A Granted JPS6490390A (en) 1988-03-23 1988-03-23 Boring machine

Country Status (1)

Country Link
JP (1) JPS6490390A (cs)

Also Published As

Publication number Publication date
JPS6490390A (en) 1989-04-06

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees