JPH0369778U - - Google Patents
Info
- Publication number
- JPH0369778U JPH0369778U JP13197989U JP13197989U JPH0369778U JP H0369778 U JPH0369778 U JP H0369778U JP 13197989 U JP13197989 U JP 13197989U JP 13197989 U JP13197989 U JP 13197989U JP H0369778 U JPH0369778 U JP H0369778U
- Authority
- JP
- Japan
- Prior art keywords
- exterior concrete
- ductile
- paraffin
- coated
- utility
- 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.)
- Pending
Links
- 229910001018 Cast iron Inorganic materials 0.000 claims 1
- 239000004570 mortar (masonry) Substances 0.000 claims 1
- 239000012188 paraffin wax Substances 0.000 claims 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
第１図はこの考案の実施例の断面図、第２図は
実施例の要部拡大断面図である。
FIG. 1 is a sectional view of an embodiment of this invention, and FIG. 2 is an enlarged sectional view of a main part of the embodiment.
Claims (1)
面には外装コンクリートが設けられたダクタイル
推進管において、該外装コンクリート表面にパラ
フインを塗布してなることを特徴とするダクタイ
ル推進管。 A ductile propulsion tube having an inner surface of a cast iron pipe with mortar lining and an exterior concrete provided on the outer surface, characterized in that the surface of the exterior concrete is coated with paraffin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13197989U JPH0369778U (en) | 1989-11-13 | 1989-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13197989U JPH0369778U (en) | 1989-11-13 | 1989-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0369778U true JPH0369778U (en) | 1991-07-11 |
Family
ID=31679457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13197989U Pending JPH0369778U (en) | 1989-11-13 | 1989-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0369778U (en) |
-
1989
- 1989-11-13 JP JP13197989U patent/JPH0369778U/ja active Pending