JPH033839B2 - - Google Patents
Info
- Publication number
- JPH033839B2 JPH033839B2 JP56077317A JP7731781A JPH033839B2 JP H033839 B2 JPH033839 B2 JP H033839B2 JP 56077317 A JP56077317 A JP 56077317A JP 7731781 A JP7731781 A JP 7731781A JP H033839 B2 JPH033839 B2 JP H033839B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- sealant
- hole
- cavity
- tube
- 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 - Lifetime
Links
- 239000000565 sealant Substances 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 9
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000035939 shock Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、管周壁に管軸方向の通孔を有する合
成樹脂管（以下単に孔あき管という）の端面閉塞
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for closing the end face of a synthetic resin pipe (hereinafter simply referred to as a perforated pipe) having a through hole in the pipe axial direction in the pipe peripheral wall.
（従来の技術）
この種の孔あき管は、剛性に優れていることか
ら、地中に埋設されて下水管として使用されてい
いる。ところで、この孔あき管同志の接続は従来
の合成樹脂管の接続の場合と同様に、孔あき管の
一端部を拡径して受口を設け、この受口に他方の
孔あき管の他端差口を挿入して順次接続する方法
が採用されているために、管周壁に管軸方向に連
通した通孔が存在する場合には、この通孔を介し
て管内流体が漏洩したり、雨水、地下水等が管内
に流入することがあつた。(Prior Art) This type of perforated pipe has excellent rigidity and is therefore buried underground and used as a sewage pipe. By the way, this connection of perforated pipes is similar to the case of connecting conventional synthetic resin pipes, by expanding the diameter of one end of the perforated pipe and providing a socket, and connecting the other perforated pipe to this socket. Since the method of sequentially connecting by inserting end spigots is adopted, if there is a through hole in the pipe peripheral wall that communicates with the pipe in the axial direction, the fluid inside the pipe may leak through this hole, or Rainwater, groundwater, etc. sometimes flowed into the pipes.
これを防止するために、実開昭54−114812号公
報には、ゴム製リングの側面に多数の錐状突出体
が一体に突設された通孔閉塞部材を用いて孔あき
管の通孔を閉塞することが提案されている。 In order to prevent this, Japanese Utility Model Application Publication No. 54-114812 discloses a hole closing member in which a large number of conical protrusions are integrally provided on the side surface of a rubber ring. It has been proposed to block the
（発明が解決しようとする課題）
しかしながら、前述した閉塞方法の場合には、
ゴム製の錐状突出体を管端面に開口した多数の通
孔に一本ずつ挿入するのに手間がかかるという問
題があつた。特に、水密性を高めるためには、錐
状突出体の外径を通孔の内径よりも若干大きくす
る必要があるので、錐状突出体を通孔に挿入する
のが非常に厄介であつた。(Problem to be solved by the invention) However, in the case of the above-mentioned closure method,
There is a problem in that it takes time and effort to insert the conical rubber protrusions one by one into the numerous through holes opened in the end surface of the tube. In particular, in order to improve watertightness, the outer diameter of the conical protrusion needs to be slightly larger than the inner diameter of the through hole, making it very difficult to insert the conical protrusion into the through hole. .
また、錐状突出体を通孔内に挿入しただけでは
抜け易く、管の断面形状が変形した場合とか、振
動・衝撃等を受けたときに錐状突出体が通孔から
離脱する危険性があつた。 In addition, if the conical protrusion is simply inserted into the through hole, it will easily come out, and there is a risk that the conical protrusion will come off from the through hole if the cross-sectional shape of the tube is deformed or if it is subjected to vibrations, shocks, etc. It was hot.
本発明は、かかる従来閉塞方法の問題点を解決
したものであつて、通孔の閉塞が一工程で簡単に
行なえ、しかも通孔閉塞後孔あき管に振動・衝撃
等が作用しても、通孔からシール剤が離脱する恐
れのない通孔閉塞方法を提供するものである。 The present invention solves the problems of such conventional closing methods, and allows the through hole to be easily closed in one step, and even when vibrations, shocks, etc. are applied to the perforated pipe after the through hole is closed. To provide a method for closing a through hole without fear of sealant separating from the through hole.
（課題を解決するための手段）
本発明の閉塞方法は、管周壁に管軸方向の通孔
を有する孔あき管の端面に開口した通孔を閉塞す
るにあたり、前記孔あき管の端部内・外面と密接
する内・外壁と底壁によつて環状の空洞が形成さ
れ、かつ前記空洞を形成する外壁の奥部に空洞の
奥側に向つて内径が縮小する傾斜面が設けられた
シール剤充填治具を準備する。(Means for Solving the Problems) In the closing method of the present invention, when closing a through hole opened in the end face of a perforated tube having a through hole in the tube axis direction in the tube peripheral wall, the inside of the end of the perforated tube is closed. A sealant in which an annular cavity is formed by inner and outer walls and a bottom wall that are in close contact with the outer surface, and a sloped surface whose inner diameter decreases toward the back of the cavity is provided at the inner part of the outer wall forming the cavity. Prepare the filling jig.
そこで、この充填治具を前記孔あき管の端部に
装着し、該治具の空洞内に未硬化シール剤を注入
してこのシール剤により管端の通孔端部を閉塞
し、また前記空洞内に残留したシール剤によつて
管端部の内・外面からほぼ面一に突出してその先
端外周に先細り傾斜面をもつた突出端部を形成
し、前記シール剤が硬化したのち管端部からシー
ル剤充填治具を取外すことを特徴とするものであ
る。 Therefore, this filling jig is attached to the end of the perforated pipe, an uncured sealant is injected into the cavity of the jig, and the through-hole end of the pipe end is closed with this sealant. The sealant remaining in the cavity forms a protruding end that protrudes almost flush from the inner and outer surfaces of the tube end and has a tapered slanted surface on the outer periphery of the tip, and after the sealant hardens, the tube end The feature is that the sealant filling jig is removed from the section.
（作用）
シール剤充填治具には孔あき管の端部内・外面
と密接する内・外壁と底壁によつて環状の空洞が
形成され、かつ前記空洞を形成する外壁の奥部に
空洞の奥側に向つて内径が縮小する傾斜面が設け
られているので、このシール剤充填治具を前記孔
あき管の端部に装着して空洞内に未硬化のシール
剤を充填すると、シール剤が通孔端部に充満して
通孔を閉塞する。また、前記空洞の奥部に滞留し
て硬化したシール剤により孔あき管の端面と一体
的に接合した突出端部が形成され、該突出端部の
外周面に先細り状の傾斜面が形成される。(Function) In the sealant filling jig, an annular cavity is formed by inner and outer walls and a bottom wall that are in close contact with the inner and outer surfaces of the end of the perforated pipe, and a cavity is formed deep inside the outer wall forming the cavity. Since it is provided with an inclined surface whose inner diameter decreases toward the back side, when this sealant filling jig is attached to the end of the perforated tube and uncured sealant is filled into the cavity, the sealant is filled. fills the end of the through hole and blocks it. Further, the sealing agent that remains in the deep part of the cavity and hardens forms a protruding end that is integrally joined to the end surface of the perforated pipe, and a tapered inclined surface is formed on the outer peripheral surface of the protruding end. Ru.
（実施例）
以下、本発明の一実施例を図面にて説明する。
第１図は孔あき管の端部にシール剤充填治具を装
着する前の状態を示す縦断面図、第２図は孔あき
管の端部にシール剤充填治具を装着した状態を示
す縦断面図、第３図は通孔内に未硬化のシール材
を充填した後充填治具を取外した状態を示す縦断
面図、第４図は通孔が閉塞された孔あき管の接続
状態を示す縦断面図、第５図は孔あき管の管端面
に環状溝を設けた他の実施例を示す斜示図であつ
て、図中Ｐは孔あき管、Ｄはシール剤充填治具、
Ｓはシール剤である。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.
Figure 1 is a longitudinal sectional view showing the state before the sealant filling jig is attached to the end of the perforated pipe, and Figure 2 is a longitudinal cross-sectional view showing the state before the sealant filling jig is attached to the end of the perforated pipe. A longitudinal cross-sectional view, Fig. 3 is a longitudinal cross-sectional view showing the state in which the filling jig is removed after filling the uncured sealing material into the through hole, and Fig. 4 shows the connected state of the perforated pipe with the through hole closed. FIG. 5 is a perspective view showing another embodiment in which an annular groove is provided on the end surface of a perforated pipe, in which P is a perforated pipe and D is a sealant filling jig. ,
S is a sealant.
孔あき管Ｐは内壁１ａと外壁１ｂとの間の管周
壁１内に管軸方向に連通した多数の通孔２を有
し、該孔あき管Ｐには第４図に示した如く、その
一端部に差口３、他端部に拡径受口４が形成され
ている。したがつて、この孔あき管Ｐの受口４内
に別の孔あき管Ｐの他端差口３を挿入することに
よつて、孔あき管を連続して順次接続することが
できる。 The perforated pipe P has a large number of through holes 2 communicating in the pipe axial direction in the pipe peripheral wall 1 between the inner wall 1a and the outer wall 1b, and as shown in FIG. A spigot 3 is formed at one end, and an enlarged diameter socket 4 is formed at the other end. Therefore, by inserting the other end spigot 3 of another perforated pipe P into the socket 4 of this perforated pipe P, the perforated pipes can be successively connected.
一方、シール剤充填治具Ｄは、孔あき管Ｐの端
部の内・外面と密接する内・外壁と底壁によつて
環状の空洞５が形成され、該空洞５の開口端部に
は孔あきＰの挿入を容易にするために面取りを施
したリング状開口６が形成されている。一方、空
洞５を形成する外壁の奥部には、空洞の奥側に向
つて内径が縮小する傾斜面８が設けられ、また空
洞５の奥部にはシール剤Ｓを空洞５内に充填する
ための注入口７が設けられている。 On the other hand, in the sealant filling jig D, an annular cavity 5 is formed by inner and outer walls and a bottom wall that are in close contact with the inner and outer surfaces of the end of the perforated pipe P. A chamfered ring-shaped opening 6 is formed to facilitate insertion of the hole P. On the other hand, an inclined surface 8 whose inner diameter decreases toward the back of the cavity is provided at the deep part of the outer wall forming the cavity 5, and a sealing agent S is filled into the cavity 5 at the deep part of the cavity 5. An inlet 7 is provided for this purpose.
本発明では、まずこの充填治具Ｄを第２図に示
す如く孔あき管Ｐの端部に装着する。 In the present invention, the filling jig D is first attached to the end of the perforated pipe P as shown in FIG.
このとき、シール剤充填治具Ｄの空洞５の内面
に適宜の離型剤を塗布しておいて、空洞５の壁面
とシール剤Ｓとの離型性を良くておくのが好まし
い。そこで、注入口７から充填治具Ｄの空洞５内
に所要量の未硬化のシール剤Ｓを注入する。 At this time, it is preferable to apply an appropriate mold release agent to the inner surface of the cavity 5 of the sealant filling jig D to improve the mold releasability between the wall surface of the cavity 5 and the sealant S. Therefore, a required amount of uncured sealant S is injected into the cavity 5 of the filling jig D from the injection port 7.
シール剤Ｓが空洞５内に充満すると、その一部
が管端面に開口した通孔２内に侵入してその通孔
端部を閉塞する。また、空洞５の奥部にはシール
剤Ｓが残留するので、該シール剤Ｓが硬化してか
ら充填治具Ｄを管端部から取外すと、第３図に示
す如く孔あき管Ｐの端部内・外面とほぼ面一に突
出してその先端外周が先細り状の傾斜面となつた
突出端部Ｔが形成される。この突出端部Ｔは、孔
あき管Ｐの端部を保護して管の破損を防止すると
共に、第４図に示す如く孔あき管Ｐの一端受口４
に別の孔あき管Ｐの他端差口３を挿入する際に、
先端外周の傾斜面が案内となつて管の接続を容易
にするものである。 When the cavity 5 is filled with the sealant S, a part of the sealant S enters the through hole 2 opened at the end surface of the tube and closes the end of the through hole. Furthermore, since the sealant S remains in the inner part of the cavity 5, when the filling jig D is removed from the end of the pipe after the sealant S has hardened, the end of the perforated pipe P can be seen as shown in FIG. A protruding end portion T is formed which protrudes substantially flush with the inner and outer surfaces of the portion and whose outer periphery is a tapered inclined surface. This protruding end T protects the end of the perforated pipe P to prevent damage to the pipe, and as shown in FIG.
When inserting the other end spigot 3 of another perforated pipe P into
The inclined surface on the outer periphery of the tip acts as a guide and facilitates the connection of the tube.
また、本発明の他の実施例として、第５図に示
す如く孔あき管Ｐの端面に各通孔２の開口端を連
通する環状溝９を形成し、該管端部にシール剤充
填治具Ｄを装着してから空洞５内に未硬化のシー
ル剤Ｓを充填してもよい。この場合には空洞５内
に充填したシール剤Ｓが環状溝９と、該環状溝９
と連通する通孔端部に充満するので、通孔２が一
層確実に閉塞されることになる。 Further, as another embodiment of the present invention, as shown in FIG. 5, an annular groove 9 is formed in the end face of the perforated pipe P to communicate the open end of each through hole 2, and the pipe end is filled with a sealant. After the tool D is attached, the cavity 5 may be filled with an uncured sealant S. In this case, the sealant S filled in the cavity 5 seals the annular groove 9 and the annular groove 9.
Since the end portion of the through hole communicating with the through hole is filled, the through hole 2 is more reliably closed.
本発明の通孔閉塞方法は、未硬化のシール剤Ｓ
を通孔２内に充填してから通孔２内で硬化させる
ものであり、かかるシール剤として次のようなも
のが挙げられる。 The through hole closing method of the present invention uses uncured sealant S.
The sealant is filled into the through hole 2 and then cured within the through hole 2, and examples of such a sealing agent include the following.
ａ 未硬化の一液ポリウレタンフオームを充填し
てから硬化させる。a Fill with uncured one-component polyurethane foam and then cure.
ｂ ポリエステル樹脂、エポキシ樹脂、シリコー
ン樹脂等の未硬化の熱硬化性樹脂を加熱硬化さ
せるか、常温で硬化させる。b An uncured thermosetting resin such as a polyester resin, epoxy resin, or silicone resin is cured by heating or cured at room temperature.
ｃ ポリエチレン、ポリプロピレン、ポリ塩化ビ
ニル、ポリスチレン、ポリウレタンゴム等の熱
可塑性樹脂を溶融状態で充填して冷却硬化させ
る。c A thermoplastic resin such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyurethane rubber, etc. is filled in a molten state and cooled and hardened.
ｄ シリコーン系列樹脂、ポリウレタン等の未硬
化のシール剤を充填してから硬化させる。d Fill with uncured sealant such as silicone resin or polyurethane and then cure.
（発明の効果）
以上詳述した如く、本発明の閉塞方法は孔あき
管の端部にシール剤充填治具を装着し、該充填治
具を介して孔あき管の端面に開口した通孔内に未
硬化のシール剤を充填するので、シール剤は簡単
に通孔内に侵入して通孔内に充満し、通孔の壁面
と一体的に接合して硬化する。したがつて、管の
断面形状が変形したり、管に振動・衝撃等が作用
しても、通孔からシール剤が離脱する恐れがな
い。(Effects of the Invention) As described in detail above, the closing method of the present invention involves attaching a sealant filling jig to the end of the perforated pipe, and then using the filling jig to insert the sealant into the through hole opened at the end face of the perforated pipe. Since the inside is filled with an uncured sealant, the sealant easily enters the through hole, fills the through hole, and is integrally bonded to the wall surface of the through hole and hardens. Therefore, even if the cross-sectional shape of the tube is deformed or vibrations, shocks, etc. are applied to the tube, there is no fear that the sealant will separate from the through hole.
また、孔あき管の端部が前記シール剤充填治具
の空洞奥部に残留して硬化したシール剤（突出端
部）で保護されるので、管の運搬、配管施工の際
に振動・衝撃等を受けて管端部が破損することが
ない。しかも、前記突出端部の先端外周に先細り
状の傾斜面が形成されるので、管の接続が極めて
簡単に行なえるという配管施工上の利点がある。 In addition, since the end of the perforated pipe is protected by the hardened sealant (protruding end) that remains in the deep part of the cavity of the sealant filling jig, vibrations and shocks may occur during pipe transportation or piping construction. The pipe end will not be damaged due to Furthermore, since a tapered inclined surface is formed on the outer periphery of the tip of the projecting end, there is an advantage in piping construction that the pipe can be connected extremely easily.
図面は本発明の一実施例を示すものであつて、
第１図は孔あき管の端部にシール剤充填治具を装
着する前の状態を示す縦断面図、第２図は孔あき
管の端部にシール剤充填治具を装着した状態を示
す縦断面図、第３図は通孔内に未硬化のシール材
を充填した後充填治具を取外した状態を示す縦断
面図、第４図は通孔が閉塞された孔あき管の接続
状態を示す縦断面図、第５図は孔あき管の管端面
に環状溝を設けた他の実施例を示す斜示図であ
る。
Ｐ……孔あき管、Ｄ……シール剤充填治具、Ｓ
……シール剤、Ｔ……突出端部、１……管周壁、
２……通孔、３……差口、４……受口、５……空
洞、６……リング状開口、７……注入口、８……
傾斜面、９……環状溝。
The drawings show one embodiment of the invention,
Figure 1 is a longitudinal sectional view showing the state before the sealant filling jig is attached to the end of the perforated pipe, and Figure 2 is a longitudinal cross-sectional view showing the state before the sealant filling jig is attached to the end of the perforated pipe. A longitudinal cross-sectional view, Fig. 3 is a longitudinal cross-sectional view showing the state in which the filling jig is removed after filling the uncured sealing material into the through hole, and Fig. 4 shows the connected state of the perforated pipe with the through hole closed. FIG. 5 is a perspective view showing another embodiment in which an annular groove is provided on the end surface of a perforated tube. P...Perforated pipe, D...Sealant filling jig, S
...Sealant, T...Protruding end, 1...Pipe peripheral wall,
2...Through hole, 3...Socket, 4...Socket, 5...Cavity, 6...Ring-shaped opening, 7...Inlet, 8...
Inclined surface, 9... annular groove.
Claims (1)
の端面に開口した通孔を閉塞するにあたり、前記
合成樹脂管の端部内・外面と密接する内・外壁と
底壁によつて環状の空洞が形成され、かつ前記空
洞を形成する外壁の奥部に空洞の奥側に向つて内
径が縮小する傾斜面が設けられたシール剤充填治
具を前記管端部に装着し、該治具の空洞内に未硬
化のシール剤を注入してこのシール剤により管端
の通孔端部を閉塞し、また前記空洞内に残留した
シール剤によつて管端部の内・外面からほぼ面一
に突出してその先端外周に先細り状の傾斜面をも
つた突出端部を形成し、前記シール剤が硬化した
のち管端部からシール剤充填治具を取外すことを
特徴とする管周壁に管軸方向の通孔を有する合成
樹脂管の端面閉塞方法。1. When closing a through hole opened in the end face of a synthetic resin pipe which has a through hole in the pipe axial direction in the pipe circumferential wall, an annular hole is formed by inner and outer walls and a bottom wall that are in close contact with the inner and outer surfaces of the end of the synthetic resin pipe. A sealing agent filling jig in which a cavity is formed and an inclined surface whose inner diameter decreases toward the back of the cavity is provided in the inner part of the outer wall forming the cavity is attached to the pipe end, and the jig is attached to the pipe end. An uncured sealant is injected into the cavity of the tube, and the through-hole end of the tube end is closed with this sealant, and the sealant remaining in the cavity also closes the surface from the inner and outer surfaces of the tube end. The pipe has a protruding end portion that protrudes at one end and has a tapered inclined surface on the outer periphery of the distal end thereof, and the sealant filling jig is removed from the pipe end portion after the sealant has hardened. A method for closing the end face of a synthetic resin pipe having an axial hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56077317A JPS57192697A (en) | 1981-05-21 | 1981-05-21 | Method of closing end surface of synthetic resin pipe, pipe circumferential wall thereof has through-hole in pipe axial direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56077317A JPS57192697A (en) | 1981-05-21 | 1981-05-21 | Method of closing end surface of synthetic resin pipe, pipe circumferential wall thereof has through-hole in pipe axial direction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57192697A JPS57192697A (en) | 1982-11-26 |
| JPH033839B2 true JPH033839B2 (en) | 1991-01-21 |
Family
ID=13630545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56077317A Granted JPS57192697A (en) | 1981-05-21 | 1981-05-21 | Method of closing end surface of synthetic resin pipe, pipe circumferential wall thereof has through-hole in pipe axial direction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57192697A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01193644A (en) * | 1988-01-28 | 1989-08-03 | Hitachi Ltd | Position detector for ultrasonic probe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243125A (en) * | 1975-10-01 | 1977-04-04 | Fujio Kanemoto | Local repair technique and device for a buried pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5817981Y2 (en) * | 1978-01-31 | 1983-04-12 | 積水化学工業株式会社 | Structure of the pipe end of a resin pipe with a through hole in the pipe wall in the pipe axial direction |
-
1981
- 1981-05-21 JP JP56077317A patent/JPS57192697A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243125A (en) * | 1975-10-01 | 1977-04-04 | Fujio Kanemoto | Local repair technique and device for a buried pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57192697A (en) | 1982-11-26 |
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