JPH0310465Y2 - - Google Patents
Info
- Publication number
- JPH0310465Y2 JPH0310465Y2 JP1985065598U JP6559885U JPH0310465Y2 JP H0310465 Y2 JPH0310465 Y2 JP H0310465Y2 JP 1985065598 U JP1985065598 U JP 1985065598U JP 6559885 U JP6559885 U JP 6559885U JP H0310465 Y2 JPH0310465 Y2 JP H0310465Y2
- Authority
- JP
- Japan
- Prior art keywords
- socket
- rib
- metal body
- strip
- engagement rib
- 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
Links
- 239000002184 metal Substances 0.000 claims description 30
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 230000003014 reinforcing effect Effects 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000007500 overflow downdraw method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001006 Constantan Inorganic materials 0.000 description 1
- 229910000896 Manganin Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案はダクト管、上下水管、輪送管などに使
用されるらせん管を形成するための帯状体に関す
るものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a band-shaped body for forming a spiral pipe used for duct pipes, water and sewage pipes, wheel pipes, etc.
（従来の技術）
近時、従来の押出成形法で得られる合成樹脂管
に代わつて、両端縁に長手方向の相互係合用リブ
を有する合成樹脂製帯状体をらせん状に巻付けて
得られる、いわゆる、合成樹脂管がダクト用、輪
送用、排水用などの配管材として使用されつつあ
る。(Prior Art) Recently, instead of synthetic resin tubes obtained by conventional extrusion molding methods, synthetic resin tubes having longitudinal mutually engaging ribs on both ends are spirally wound. So-called synthetic resin pipes are increasingly being used as piping materials for ducts, conveyors, drainage, etc.
該らせん管の特徴として(1)一巻にした帯状体を
現場に搬送し、簡単な製管設備（例えば特開昭55
−61434号公報、公表特許昭57−501229号公報な
どに記載されたもの）を使用し、現場でらせん状
に巻付けるだけで管体とすることができるので、
従来の様に管体を搬送する必要がなく、搬送コス
トが安くて済み、(2)また、任意の口径の管体が容
易に得られるという利点がある。 The characteristics of this spiral pipe are as follows: (1) It is possible to transport the rolled strip to the site and use simple pipe manufacturing equipment (for example, JP-A-55
-61434, published patent No. 57-501229, etc.), and can be made into a tube by simply winding it in a spiral on-site.
There is an advantage that there is no need to transport the tube as in the conventional method, the transportation cost is low, and (2) a tube of any diameter can be easily obtained.
そして、従来、上記合成樹脂製帯状体をらせん
状に巻付けて管体に形成するに際しては、例えば
公表特許昭57−501229号公報に記載されている様
に、巻付けられる直前に係合リブの表面に溶剤型
接着剤を塗布して巻付ける接着方式、あるいは帯
状体の係合リブとソケツトと加熱して溶融状態に
しながら巻付ける熱融着方式が採用されている。 Conventionally, when winding the above-mentioned synthetic resin belt-like body in a spiral shape to form a pipe body, as described in, for example, Japanese Patent Publication No. 57-501229, an engaging rib is formed immediately before the winding. Adhesive methods are used in which a solvent-based adhesive is applied to the surface of the strip and then wrapped, or a heat fusion method is used in which the engagement ribs of the strip and the socket are heated and molten and wrapped.
（考案が解決しようとする問題点）
しかしながら、上記接着方式の場合、例えば帯
状体が硬質塩化ビニル樹脂より製されてなるもの
においては、接着剤に含まれる溶剤により環境応
力割れが生じて管体の機械的強度が低下するとい
う欠点があり、また、作業者の安全面並びに環境
衛生面から、接着剤供給装置は防爆仕様のものが
必要であり、設備費用がかかるという欠点があ
る。また、熱融着方式の場合、特殊な加熱装置が
必要であり、設備費がかかるという欠点があり、
しかも加熱されるのは帯状体の一部だけであるの
で、帯状体が変形し、形成される管体の壁中に不
均一な歪が残り、このため管体の機械的強度が低
下するという欠点がある。本考案は上記従来の問
題点を解決するものであり、その目的とするとこ
ろは、接着剤を使用したり、あるいは帯状体の一
部を加熱溶融したりすることなく、しかも機械的
強度の低下のないらせん管を容易に得ることがで
きるらせん管形成用帯状体を提供することにあ
る。(Problem to be solved by the invention) However, in the case of the above-mentioned adhesive method, for example, when the strip is made of hard vinyl chloride resin, environmental stress cracking occurs due to the solvent contained in the adhesive, and the pipe There is a disadvantage that the mechanical strength of the adhesive is reduced, and from the viewpoint of worker safety and environmental hygiene, the adhesive supply device must be explosion-proof, which increases equipment costs. In addition, the heat fusion method requires a special heating device, which has the disadvantage of increasing equipment costs.
Moreover, since only a portion of the strip is heated, the strip is deformed and uneven strain remains in the wall of the formed tube, which reduces the mechanical strength of the tube. There are drawbacks. The present invention solves the above-mentioned conventional problems, and its purpose is to solve the problem without using adhesive or heating and melting a part of the strip, and without reducing the mechanical strength. It is an object of the present invention to provide a band-shaped body for forming a spiral tube, which allows a spiral tube to be easily obtained.
（問題点を解決するための手段）
本考案のらせん管形成用帯状体は、長手方向の
両端縁に沿つて一方に係合リブ、他方にソケツト
を有する帯状体を、係合リブとソケツトとが係合
するようにらせん状に巻付けてらせん管を形成す
るもので、前記係合リブの外面または前記ソケツ
トの内面の少くとも一方に、長手方向に連続した
通電により発熱する金属体が一体に設けられてな
るものである。(Means for Solving the Problems) The belt-shaped body for forming a spiral tube of the present invention has an engaging rib on one side and a socket on the other side along both ends in the longitudinal direction. A metal body that generates heat by continuous energization in the longitudinal direction is integrated into at least one of the outer surface of the engaging rib or the inner surface of the socket. It is set up in
（作用）
本考案の帯状体はらせん管を形成するために、
係合リブとソケツトとが係合するように帯状体を
らせん状に巻付けながら、もしくは巻付けた後
に、係合リブの外面あるいはソケツトの内面に一
体に設けられた金属体を通電により発熱せしめる
ことにより、金属体の周りの係合リブの外面及び
ソケツトの内面が溶融状態となり、金属体を介在
してらせん管の接合部が強固に接着され、水密
性、気密性にすぐれたものとなる。(Function) In order to form a spiral tube, the belt-like body of the present invention has
While or after winding the strip in a spiral manner so that the engagement rib and the socket are engaged, a metal body provided integrally on the outer surface of the engagement rib or the inner surface of the socket is heated by energizing it. As a result, the outer surface of the engagement rib around the metal body and the inner surface of the socket become molten, and the joint of the helical tube is firmly bonded through the metal body, resulting in excellent watertightness and airtightness. .
（実施例）
以下、本考案の一例を図面に基づいて説明す
る。第１図は本考案におけるらせん管形成用帯状
体の一実施例を一部省略して示す断面図である。
１は硬質塩化ビニル樹脂などの硬質合成樹脂から
製されてなる帯状体であり、長尺平板状の基部２
の長手方向の一端縁部に係合リブ３が、一方、他
端縁部にソケツト４がそれぞれ長手方向に一体に
設けられている。係合リブ３及びソケツト４はそ
れぞれ基部２から直立して設けられている。係合
リブ３は直立部３１と、該直立部３１の先端に連
接する係合部３２とから構成されている。ソケツ
ト４は前記係合リブ３を受容するものである。ソ
ケツト４の内面に長手方向に連続して断面形状が
Ｃ形の金属体５が一体に設けられている。金属体
５が設けられたソケツト４の内面形状は係合リブ
３の外面形状にほぼ符合するようになされてい
る。(Example) Hereinafter, an example of the present invention will be described based on the drawings. FIG. 1 is a partially omitted cross-sectional view showing an embodiment of a strip for forming a spiral tube according to the present invention.
1 is a band-shaped body made of hard synthetic resin such as hard vinyl chloride resin, and has a long flat base 2
An engaging rib 3 is integrally provided at one end edge in the longitudinal direction, and a socket 4 is provided at the other end edge. The engagement rib 3 and the socket 4 are each provided upright from the base 2. The engagement rib 3 is composed of an upright portion 31 and an engagement portion 32 connected to the tip of the upright portion 31. The socket 4 receives the engagement rib 3. A metal body 5 having a C-shaped cross section is integrally provided on the inner surface of the socket 4 continuously in the longitudinal direction. The inner surface shape of the socket 4 provided with the metal body 5 is designed to approximately match the outer surface shape of the engagement rib 3.
金属体５の断面形状は、第１図で示されるＣ形
のものに限定されず、例えば円形、半円形、三日
月形などのものであつてもよい。一方、係合リブ
３の断面形状は金属体５の形状に応じて適宜変更
すればよい。 The cross-sectional shape of the metal body 5 is not limited to the C-shape shown in FIG. 1, and may be, for example, circular, semicircular, crescent-shaped, or the like. On the other hand, the cross-sectional shape of the engaging rib 3 may be changed as appropriate depending on the shape of the metal body 5.
また、金属体５は、第２図に示すように、ソケ
ツト４ａ内面に設けられたすじ状のもの５ａであ
つてもよい。この場合、金属体５ａは少なくとも
１条設けられておればよい。 Further, the metal body 5 may be a strip-shaped member 5a provided on the inner surface of the socket 4a, as shown in FIG. In this case, it is sufficient that at least one metal body 5a is provided.
また、本考案においては、金属体５は係合リブ
３の外面に設けられていてもよく、その際、第３
図に示すように、係合部３２ｂの外面を覆うよう
に、第１図で示されるものと同じ断面形状のもの
５ｂが設けられていてもよく、あるいは第４図に
示すように、すじ状に金属体５ｃが設けられてい
てもよい。また、係合リブ３の外面及びソケツト
４の内面の両方に金属体５が設けられていてもよ
い。 Further, in the present invention, the metal body 5 may be provided on the outer surface of the engagement rib 3, in which case the third
As shown in the figure, a section 5b having the same cross-sectional shape as that shown in FIG. 1 may be provided so as to cover the outer surface of the engaging portion 32b, or as shown in FIG. A metal body 5c may be provided on the metal body 5c. Further, the metal body 5 may be provided on both the outer surface of the engagement rib 3 and the inner surface of the socket 4.
金属体５としては、通電により発熱するもので
あればよく、例えばニクロム、マンガニン、コン
スタンタンなどの電気抵抗合金、鋼などの金属材
料製のものが使用される。 The metal body 5 may be any material that generates heat when energized, and may be made of an electrical resistance alloy such as nichrome, manganin, constantan, or a metal material such as steel.
６は斜めリブであり、ソケツト４の下部側から
外方に延出して設けられている。 A diagonal rib 6 is provided extending outward from the lower side of the socket 4.
７は断面形状がＴ字形の補強リブであり、係合
リブ３とソケツト４との間に基部１から直立して
複数条長手方向に設けられている。 Reference numeral 7 denotes a reinforcing rib having a T-shaped cross section, and a plurality of reinforcing ribs are provided between the engaging rib 3 and the socket 4 so as to stand upright from the base 1 in the longitudinal direction.
帯状体１の係合リブ３の外面またはソケツト４
の内面に金属体５を一体に設けるには、成形金型
の所定部分に金属体５を送りこみながら帯状体１
の押出成形と同時に行えばよい。 The outer surface of the engagement rib 3 of the strip 1 or the socket 4
In order to integrally provide the metal body 5 on the inner surface of the band-shaped body 1, the metal body 5 is fed into a predetermined part of the mold.
This can be done simultaneously with extrusion molding.
本考案における帯状体をらせん管に形成するに
は、例えば所望の直径を有する円筒形マンドレル
を使用し、該マンドレルの外面に帯状体１を補強
リブ７，７…が外側になるように、係合リブ３と
ソケツト４とを相互に係合させてらせん状に巻付
ければよい。第５図は第１図で示される帯状体１
をらせん状に巻付けた状態の接合部を示す部分断
面図であり、係合リブ３の外面及びソケツト４の
内面が金属体５と強固に接着されて、気密性、水
密性にすぐれた接合部が形成される。 In order to form the band-shaped body in the present invention into a spiral tube, for example, a cylindrical mandrel having a desired diameter is used, and the band-shaped body 1 is engaged with the outer surface of the mandrel so that the reinforcing ribs 7, 7... are on the outside. The coupling rib 3 and the socket 4 may be engaged with each other and wound spirally. Figure 5 shows the strip 1 shown in Figure 1.
2 is a partial cross-sectional view showing a joint in a state in which the engaging rib 3 and the socket 4 are wound in a spiral shape, and the outer surface of the engaging rib 3 and the inner surface of the socket 4 are firmly adhered to the metal body 5, resulting in a joint with excellent airtightness and watertightness. part is formed.
第１図または第２図に示すように、ソケツト４
の内面に金属体５を設けた場合、金属体５の表面
にゴミなどが付着しにくく、保管が容易である。 As shown in FIG. 1 or 2, the socket 4
When the metal body 5 is provided on the inner surface of the metal body 5, it is difficult for dust to adhere to the surface of the metal body 5, and storage is easy.
また、第１図の実施例のように、ソケツト４の
下部側より外方に延出して斜めリブ６を設けるこ
とにより、係合リブ３をソケツト４内に係合させ
る際に、斜めリブ６が、係合リブ３に隣接する補
強リブ７のフランジ部に係止されるので、金属体
５を発熱させて係合リブ３の外面及びソケツト４
の内面を溶融させて接着する際に、前記斜めリブ
６の係止力が押圧力として作用し、この結果接合
部の接着強度がより高められる。尚、本考案にお
いては、係合リブ３の断面形状は図示のものの
他、どのような形状のものであつてもよく、例え
ば係止部３２が三角形など角形のもの、あるいは
表面に凹凸を有するものであつてもよい。また、
補強リブ７間で形成される溝内に補強あるいは断
熱のために合成樹脂発泡体等が充填されたもので
もよい。帯状体１の厚みはらせん管の使用される
用途に応じて適宜決められる。例えばダクト用管
材の場合は0.3〜３mm程度、排水管材の場合２〜
10mm程度でよい。 Further, as in the embodiment shown in FIG. 1, by providing the diagonal rib 6 extending outward from the lower side of the socket 4, when the engaging rib 3 is engaged in the socket 4, the diagonal rib 6 is locked to the flange portion of the reinforcing rib 7 adjacent to the engagement rib 3, which causes the metal body 5 to generate heat and cause the outer surface of the engagement rib 3 and the socket 4 to heat up.
When bonding by melting the inner surface of the diagonal rib 6, the locking force of the diagonal rib 6 acts as a pressing force, and as a result, the adhesive strength of the joint is further increased. In addition, in the present invention, the cross-sectional shape of the engaging rib 3 may be any shape other than the one shown in the drawings; for example, the locking portion 32 may have a rectangular shape such as a triangle, or may have an uneven surface. It may be something. Also,
The groove formed between the reinforcing ribs 7 may be filled with synthetic resin foam or the like for reinforcement or heat insulation. The thickness of the strip 1 is appropriately determined depending on the use of the spiral tube. For example, in the case of duct pipe material, it is about 0.3 to 3 mm, and in the case of drainage pipe material, it is about 2 to 3 mm.
Approximately 10mm is sufficient.
更に、補強リブ７と補強リブ７との間の平板状
の基部２に貫通孔（図示せず）が設けられたもの
であれば、集水管として使用できる。 Furthermore, if a through hole (not shown) is provided in the flat base 2 between the reinforcing ribs 7, it can be used as a water collection pipe.
（考案の効果）
本考案らせん管形成用帯状体は以上の通り構成
され、基部の長手方向の両端縁部に設けられた係
合リブとソケツトとを重ね合わせ、かつ相互に係
合するようにらせん状に巻付けられることによつ
てらせん管を形成するための帯状体において、前
記係合リブの外面またはソケツトの内面の少なく
とも一方に、長手方向に連続した通電により発熱
する金属体が一体に設けられているので、従来の
帯状体の様に特殊仕様の接着剤供給装置あるいは
加熱装置を使用することなしに、係合リブとソケ
ツトとが係合するように帯状体をらせん状に巻付
けながら、もしくは巻付けた後に、金属体を通電
により発熱させることにより、金属体の周りの係
合リブの外面及びソケツトの内面が溶融して金属
体と強固に接着されて水密性、気密性にすぐれた
接合部を有し、機械的強度の低下の恐れがないら
せん管体を容易に得ることができる。また、得ら
れるらせん管体は係合リブとソケツトとの間に金
属体が介在されているので、該金属体を利用する
ことにより、係合リブおよびソケツトの形状によ
つては容易に解体することが可能となり、コンク
リート主柱形成用の型枠材として使用することも
できる。(Effect of the invention) The spiral tube forming strip of the present invention is constructed as described above, and the engagement ribs and sockets provided on both ends of the base in the longitudinal direction are overlapped and engaged with each other. In a band-shaped body for forming a helical tube by being wound spirally, a metal body that generates heat when continuously energized in the longitudinal direction is integrally formed on at least one of the outer surface of the engaging rib or the inner surface of the socket. Because it is provided with a strip, it is possible to wrap the strip in a spiral shape so that the engagement rib and the socket engage without using a special adhesive supply device or heating device like in conventional strips. By applying electricity to the metal body to generate heat, the outer surface of the engagement rib around the metal body and the inner surface of the socket melt and firmly adhere to the metal body, making it watertight and airtight. It is possible to easily obtain a helical tube having excellent joints and without fear of deterioration in mechanical strength. In addition, since the obtained helical tube body has a metal body interposed between the engagement rib and the socket, by using the metal body, it can be easily disassembled depending on the shape of the engagement rib and the socket. It can also be used as a formwork material for forming concrete main columns.
第１図は本考案の一実施例を一部省略して示す
横断面図、第２図〜第４図はそれぞれ本考案の他
の実施例を示す部分横断面図、第５図は第１図に
示す帯状体をらせん状に巻付けた状態の接合部を
示す部分断面図である。
１……帯状体、２……基部、３……係合リブ、
４……ソケツト、５……金属体、６……斜めリ
ブ、７，７……補強リブ。
FIG. 1 is a partially omitted cross-sectional view of one embodiment of the present invention, FIGS. 2 to 4 are partial cross-sectional views of other embodiments of the present invention, and FIG. FIG. 3 is a partial cross-sectional view showing a joint portion of the belt-shaped body shown in the figure, which is wound in a spiral manner. 1... Band-shaped body, 2... Base, 3... Engagement rib,
4...Socket, 5...Metal body, 6...Diagonal rib, 7,7...Reinforcement rib.
Claims (1)
ブを有し、一方、他端縁部に前記係合リブを受容
する長手方向のソケツトを有し、前記係合リブと
ソケツトを重ね合わせ、かつ相互に係合するよう
にらせん状に巻付けられることによつてらせん管
を形成するための帯状体において、前記係合リブ
の外面または前記ソケツトの内面の少なくとも一
方に、長手方向に連続した通電により発熱する金
属体が一体に設けられていることを特徴とするら
せん管形成用帯状体。 The base has a longitudinal engagement rib on one end edge in the longitudinal direction, and a longitudinal socket for receiving the engagement rib on the other end edge, and the engagement rib and the socket are overlapped. , and in a band-shaped body for forming a helical tube by being wound spirally so as to engage with each other, at least one of the outer surface of the engaging rib or the inner surface of the socket is continuous in the longitudinal direction. A belt-shaped body for forming a spiral tube, characterized in that a metal body that generates heat when energized is integrally provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985065598U JPH0310465Y2 (en) | 1985-04-30 | 1985-04-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985065598U JPH0310465Y2 (en) | 1985-04-30 | 1985-04-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61181183U JPS61181183U (en) | 1986-11-12 |
| JPH0310465Y2 true JPH0310465Y2 (en) | 1991-03-14 |
Family
ID=30597738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985065598U Expired JPH0310465Y2 (en) | 1985-04-30 | 1985-04-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0310465Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5465780A (en) * | 1977-10-18 | 1979-05-26 | Menzel Julian Maxwell | Plastic pipe product and method of making same |
| JPS5614685A (en) * | 1979-07-12 | 1981-02-12 | Dayco Corp | Hose structure and its manufacture |
-
1985
- 1985-04-30 JP JP1985065598U patent/JPH0310465Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5465780A (en) * | 1977-10-18 | 1979-05-26 | Menzel Julian Maxwell | Plastic pipe product and method of making same |
| JPS5614685A (en) * | 1979-07-12 | 1981-02-12 | Dayco Corp | Hose structure and its manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61181183U (en) | 1986-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4308082A (en) | Method of forming a tubular article | |
| JPS62118187A (en) | Electric welded joint or electric welded sleeve | |
| JPH0220631A (en) | Manufacture of corrugated tube | |
| JPH03282095A (en) | Method of repairing and protecting sewer pipe | |
| JP4331818B2 (en) | Rehabilitation method for existing pipe having straight pipe part and curved part and connecting member for belt-like body | |
| JPH0310465Y2 (en) | ||
| JPH0625756Y2 (en) | Pressure resistant tube and pressure resistant laminated tube | |
| JPH024301Y2 (en) | ||
| JPH0412300Y2 (en) | ||
| JPH0413152Y2 (en) | ||
| JPH06294482A (en) | Pressure tube | |
| JPH0456917B2 (en) | ||
| JP2000346271A (en) | Connecting method for compound pipe | |
| JP4495268B2 (en) | Lining pipe connecting method and lining pipe connecting member | |
| JPH10166444A (en) | Reinforcing material for helical tube, helical tube using the same, and method for lining existing tube | |
| KR100397308B1 (en) | Pipe having a thermo-shrinking socket for coupling | |
| JP3229241B2 (en) | Construction method of lining pipe in sewer | |
| JPH0412299Y2 (en) | ||
| JP3749603B2 (en) | Strip for existing pipe lining | |
| JPH0235106Y2 (en) | ||
| JPH08233161A (en) | Spiral tube forming profile | |
| JPH037839B2 (en) | ||
| JP3276268B2 (en) | Spiral tube forming profile | |
| JPH0537117Y2 (en) | ||
| KR950005493Y1 (en) | Flexible plastics pipes |