JPS6211159B2 - - Google Patents

Info

Publication number
JPS6211159B2
JPS6211159B2 JP56106289A JP10628981A JPS6211159B2 JP S6211159 B2 JPS6211159 B2 JP S6211159B2 JP 56106289 A JP56106289 A JP 56106289A JP 10628981 A JP10628981 A JP 10628981A JP S6211159 B2 JPS6211159 B2 JP S6211159B2
Authority
JP
Japan
Prior art keywords
casing
tip
inner tube
bit
pipe
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
Application number
JP56106289A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5811294A (ja
Inventor
Hajime Eto
Kyoshi Kodama
Haruo Ooshika
Masanori Hanada
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.)
JFE Engineering Corp
Tokyo Gas Co Ltd
Koken Boring Machine Co Ltd
Original Assignee
Tokyo Gas Co Ltd
Nippon Kokan Ltd
Koken Sisui Kogyo KK
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 Tokyo Gas Co Ltd, Nippon Kokan Ltd, Koken Sisui Kogyo KK filed Critical Tokyo Gas Co Ltd
Priority to JP10628981A priority Critical patent/JPS5811294A/ja
Publication of JPS5811294A publication Critical patent/JPS5811294A/ja
Publication of JPS6211159B2 publication Critical patent/JPS6211159B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP10628981A 1981-07-09 1981-07-09 非開削埋設管工法におけるパイロツト孔の掘削装置 Granted JPS5811294A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10628981A JPS5811294A (ja) 1981-07-09 1981-07-09 非開削埋設管工法におけるパイロツト孔の掘削装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10628981A JPS5811294A (ja) 1981-07-09 1981-07-09 非開削埋設管工法におけるパイロツト孔の掘削装置

Publications (2)

Publication Number Publication Date
JPS5811294A JPS5811294A (ja) 1983-01-22
JPS6211159B2 true JPS6211159B2 (cs) 1987-03-11

Family

ID=14429893

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10628981A Granted JPS5811294A (ja) 1981-07-09 1981-07-09 非開削埋設管工法におけるパイロツト孔の掘削装置

Country Status (1)

Country Link
JP (1) JPS5811294A (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941593A (ja) * 1982-08-30 1984-03-07 ライト工業株式会社 穿孔装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5139914A (ja) * 1974-09-30 1976-04-03 Shimazaki Mixing Equip Gurautoyopatsukaanosekohoho oyobi sochi

Also Published As

Publication number Publication date
JPS5811294A (ja) 1983-01-22

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