JPS6265776A - Lining method for inside surface of pipe - Google Patents
Lining method for inside surface of pipeInfo
- Publication number
- JPS6265776A JPS6265776A JP20742785A JP20742785A JPS6265776A JP S6265776 A JPS6265776 A JP S6265776A JP 20742785 A JP20742785 A JP 20742785A JP 20742785 A JP20742785 A JP 20742785A JP S6265776 A JPS6265776 A JP S6265776A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- diameter
- diameter pipe
- sphere
- pipes
- 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
- 238000000034 method Methods 0.000 title claims description 23
- 239000003973 paint Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 22
- 238000010422 painting Methods 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims description 30
- 238000000576 coating method Methods 0.000 claims description 30
- 230000000694 effects Effects 0.000 description 6
- 241000282887 Suidae Species 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 240000002129 Malva sylvestris Species 0.000 description 1
- 235000006770 Malva sylvestris Nutrition 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、パイプ内面のライニング方法に係るもので、
例えば道路下に敷設された水道管、ビル等の建物内の給
排水管、その他各種設備のパイプラインなどで、とくに
口径の異なる異径管が接続された既設のパイプラインの
内面に樹脂塗料のライニングを行う管更正工事の分野で
利用される。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for lining the inner surface of a pipe.
For example, lining with resin paint on the inner surface of existing pipelines, such as water pipes laid under roads, water supply and drainage pipes inside buildings, and pipelines for various other facilities, especially where pipes with different diameters are connected. It is used in the field of pipe rehabilitation work.
パイプ内面に樹脂塗料をライニングする従来の方法は、
大別して、適度の粘性の樹脂塗料を高圧のエアーでパイ
プ内に送り込み、この樹脂塗料を環状に流動させてパイ
プ内壁面に塗膜を形成させる方法と、パイプ内に各種形
状のピグを挿入して樹脂塗料を充填し、前記ピグをエア
ー等で圧送して塗膜を形成させる方法とがあるが、本発
明の方法は後者のピグによる方法に属している。The conventional method of lining the inner surface of the pipe with resin paint is
Broadly speaking, there are methods in which resin paint with a moderate viscosity is sent into the pipe using high-pressure air, and the resin paint is made to flow in an annular shape to form a coating film on the inner wall of the pipe, and there is a method in which pigs of various shapes are inserted into the pipe. There is a method in which a coating film is formed by filling a resin coating material with a resin paint and using air or the like to forcefully feed the pig, and the method of the present invention belongs to the latter method using a pig.
このピグによるライニング方法は、例えば特公昭４０−
２５２７３号のように２個の球体を用いる方法、特開昭
５７−１８４４７６号にみられるように１個の球体を用
いる方法、さらには、特開昭５２−７８２５０号に示す
ように２個の砲弾形のピグを使用する方法などが数多く
提供されてぃる。This lining method using pigs can be used, for example, in
A method using two spheres as in No. 25273, a method using one sphere as in JP-A-57-184476, and a method using two spheres as shown in JP-A-52-78250. Many methods are available, including those using bullet-shaped pigs.
しかし、このピグによるライニング方法は、口径がすべ
て同一であるパイプラインには有効であるが、口径の異
なるパイプが接続された複雑な配管系には使用できない
という問題点があった。However, although this lining method using pigs is effective for pipelines that all have the same diameter, there is a problem in that it cannot be used for complex piping systems in which pipes of different diameters are connected.
すなわち、従来法におけるこの種の球体又はピグは、い
ずれもその直径が被塗装パイプの内径より若干小さくさ
れ、その間の間隔によって塗膜の厚さを規定するように
しであるから、大きな口径のパイプ側からエアーで圧送
される該パイプ塗装用の球体又はピグは、管の内径が縮
小した接続部分においてその内壁面に圧接し、それより
先の小さな口径のパイプ内に移動することは不可能であ
る。また、逆に、小口径のパイプ側から小径管塗装用の
球体又はピグを圧送すれば大口径のパイプ内に移動して
ゆくが、この場合、大口径のパイプ内の塗膜の厚さは全
く不適正となる。In other words, the diameter of this kind of sphere or pig in the conventional method is slightly smaller than the inner diameter of the pipe to be coated, and the thickness of the coating is determined by the interval between them, so it cannot be used for large diameter pipes. The sphere or pig for painting the pipe, which is fed by air from the side, comes into pressure contact with the inner wall surface of the pipe at the connecting part where the inner diameter of the pipe is reduced, and cannot move into the pipe with a smaller diameter beyond that point. be. Conversely, if a sphere or pig for coating small diameter pipes is fed under pressure from the small diameter pipe side, it will move into the large diameter pipe, but in this case, the thickness of the coating film inside the large diameter pipe will be It would be completely inappropriate.
他方、ビル等の建物内に既設の給配水管は管更正工事の
需要が多く、その大部分は異径管の接続によって構成さ
れている。したがって、一般的には他のライニング方法
、すなわち、樹脂塗料を高圧エアーで圧送して環状流を
生起させ塗膜を形成する方法がとられているが、これは
次のような問題点を有している。On the other hand, existing water supply and distribution pipes in buildings and other structures are in high demand for pipe rehabilitation work, and most of these are constructed by connecting pipes of different diameters. Therefore, other lining methods are generally used, in which the resin paint is pumped with high-pressure air to create an annular flow and form a coating film, but this method has the following problems. are doing.
（イ）横管内面の上部と下部では樹脂塗料のダレによっ
て塗膜の厚さが不均一となり、ピンホール等が残りやす
いために長期の更正効果がない。(a) The resin paint sag on the upper and lower parts of the inner surface of the horizontal pipe, resulting in uneven paint film thickness, which tends to leave pinholes, etc., so there is no long-term correction effect.
（ロ）パイプ内のエアー流速は、通常８０ｍ／Ｓｅｃ程
度にする必要があるので、パイプの口径が大きくなるに
つれてコンプレッサ等の気体加圧源は大容量のものを要
し、燃料を多く費消して不経済であるほか、施工現場へ
の搬送、設営なども困難化する。(b) The air flow velocity inside the pipe usually needs to be about 80 m/Sec, so as the diameter of the pipe becomes larger, a gas pressurizing source such as a compressor needs to have a larger capacity, which consumes more fuel. Not only is this uneconomical, but it also makes transportation to the construction site and installation difficult.
（ハ）異径管が接続されたパイプラインでは、エアー流
速をその全長にわたってライニングに至適な同一状態に
保つことが困難で、ライニング不良を生じやすい。(c) In a pipeline in which pipes of different diameters are connected, it is difficult to maintain the same air flow velocity over the entire length, which is optimal for lining, and lining defects are likely to occur.
（ニ）エルボ、チーズ又はソケットなどの継手部分では
、エアーが乱流状態となるので塗膜の厚さが不均一にな
る。(d) At joints such as elbows, cheeses, or sockets, the air becomes turbulent, resulting in uneven coating film thickness.
本発明の目的は、上記の問題点をすべて解決し、接続さ
れた異径管を連続的に、且つ均一な塗膜の厚さでライニ
ングする方法を提供することにある。An object of the present invention is to solve all of the above-mentioned problems and to provide a method for lining connected pipes of different diameters continuously and with a uniform coating thickness.
本発明のライニング方法は、異径管を接続してなる被塗
装パイプの大径管の管端から樹脂塗料を注入し、次いで
小径管塗装用の球体と、表面に圧送気体通過用の溝を備
えた大径管塗装用の球体又はピグとを挿入し、所定の圧
力の圧送気体によりこれを移動させ、前記大径管塗装用
の球体又はピグが小径管接続部の管壁内面に圧接したと
き、圧送気体が前記溝を通過して小径管内に流出し前記
小径管塗装用の球体を移動させ、それぞれの異径管の管
壁内面に塗膜を形成させることを要旨としている。The lining method of the present invention involves injecting resin paint from the end of the large diameter pipe of the pipe to be painted, which is made by connecting pipes of different diameters, and then adding a sphere for painting the small diameter pipe and a groove on the surface for passage of pressurized gas. A large-diameter pipe coating sphere or pig equipped with the above-mentioned large-diameter pipe coating is inserted and moved by compressed gas at a predetermined pressure, so that the large-diameter pipe coating sphere or pig comes into pressure contact with the inner surface of the pipe wall of the small-diameter pipe connection part. At this time, the pumped gas passes through the groove and flows into the small diameter pipe, moves the small diameter pipe coating sphere, and forms a coating film on the inner surface of the pipe wall of each different diameter pipe.
所要量の樹脂塗料が注入され、次いで大径管内に挿入さ
れた小径管塗装用の球体と大径管塗装用の球体又はピグ
は、パイプの端部から送り込まれるエアー又はガス等の
圧送気体の圧力を受け、樹脂塗料をパイプの前方に押し
出しつつ大径管内を移動する。これにより、大径管の管
壁内面には、大径管塗装用の球体又はピグの直径と管の
内径の差によって規定される厚みに塗膜が形成される。After the required amount of resin paint is injected into the large diameter pipe, the small diameter pipe painting sphere and the large diameter pipe painting sphere or pig are inserted into the large diameter pipe, and then the pressurized gas such as air or gas sent from the end of the pipe is inserted into the large diameter pipe. Under pressure, the resin paint moves through the large-diameter pipe while pushing it toward the front of the pipe. As a result, a coating film is formed on the inner surface of the wall of the large diameter pipe to a thickness determined by the difference between the diameter of the sphere or pig for coating the large diameter pipe and the inner diameter of the pipe.
こうして移動した大径管塗装用の球体又はピグが、小径
管の接続部分の縮径した管壁内面に圧接すると、大径管
の内部の圧力が高まり、前記球体又はピグの小径管側に
流通し得る溝又は孔に詰まった樹脂塗料を小径管側に押
し出しつつ圧送気体が小径管の内部に流出する。この際
、前記球体又はピグの小径管側では、狭小な溝又は孔を
通った圧送気体がノズル効果によって急速に吹き出し高
速となるので、樹脂塗料はこの縮径した管壁内面のＥ部
にも上昇し、その全周面に均一な塗膜厚が形成される。When the large-diameter pipe coating sphere or pig thus moved comes into pressure contact with the inner surface of the reduced-diameter pipe wall at the connecting portion of the small-diameter pipe, the pressure inside the large-diameter pipe increases and the flow flows to the small-diameter pipe side of the sphere or pig. The pressurized gas flows into the small diameter pipe while pushing out the resin paint stuck in the grooves or holes. At this time, on the small-diameter pipe side of the sphere or pig, the compressed gas that passes through the narrow groove or hole is rapidly blown out at high speed due to the nozzle effect, so the resin paint is also applied to the E section of the inner surface of the reduced diameter pipe wall. The film rises, and a uniform coating thickness is formed on the entire circumferential surface.
小径管の内部に流出した圧送気体は小径管塗装用の球体
を押圧してこれを移動させ、前記と同様に、小径管の管
壁内面には、小径管塗装用の球体の直径と管の内径の差
によって規定される厚みに塗膜が形成される。The pressurized gas that has flowed into the small diameter pipe presses the small diameter pipe painting sphere and moves it, and similarly to the above, the inner surface of the small diameter pipe wall is marked with the diameter of the small diameter pipe painting sphere and the diameter of the pipe. A coating film is formed with a thickness determined by the difference in inner diameter.
以下、本発明の方法を図面に示した一実施例について具
体的に説明する。Hereinafter, one embodiment of the method of the present invention shown in the drawings will be specifically described.
本発明で使用する小径管塗装用の球体１、大径管塗装用
の球体２又はピグ３は、軽量金属、合成ゴム、プラスチ
ック等の合成樹脂若しくは発泡ウレタン等の発泡樹脂な
どの適宜な材質で形成され、その直径は、被塗装パイプ
の内径との差によって所定の塗膜厚さが得られるように
定められているが、一般的にはパイプの内径よりも０．
５〜３ｍの範囲内で小径に設定される。The sphere 1 for painting small diameter pipes, the sphere 2 for painting large diameter pipes, or the pig 3 used in the present invention is made of an appropriate material such as lightweight metal, synthetic rubber, synthetic resin such as plastic, or foamed resin such as urethane foam. The diameter is determined so that a predetermined coating thickness can be obtained depending on the difference from the inner diameter of the pipe to be coated, but generally the diameter is 0.0 mm smaller than the inner diameter of the pipe.
The diameter is set within the range of 5 to 3 m.
また、大径管塗装用の球体２は、第３図（１）に示すよ
うにその外周面に適宜数の通気用の溝４が部方向に設け
であるが、これは同図（ｍ）に示すピグ３においても同
様である。The sphere 2 for painting large-diameter pipes has an appropriate number of ventilating grooves 4 on its outer circumferential surface in the direction of its outer circumferential surface, as shown in FIG. 3(m). The same applies to the pig 3 shown in FIG.
なお、同図（Ｕ）は１球体２の外周面にその内部を通っ
て相互に連通ずる通気用の孔５を適宜数穿設した実施態
様であり、この場合には、後述するようにパイプの縮径
部に圧接した球体２の溝４が圧迫縮小されるのに比し、
孔５の縮小度が小さいから圧送気体が流出し易い利点が
ある。Note that (U) in the same figure shows an embodiment in which an appropriate number of ventilation holes 5 are bored on the outer circumferential surface of one sphere 2 through the inside thereof and communicate with each other. Compared to the groove 4 of the sphere 2 pressed against the reduced diameter part of the
Since the degree of reduction of the holes 5 is small, there is an advantage that the pumped gas easily flows out.
第１図、第２図は、継手６で大径管７と小径管８とが直
管に接続された異径管についての実施例で、まず、大径
管７の管端７ａがら所要量のエポキシ樹脂塗料（Ｐ）を
注入する。この際、望ましくは前記管端７ａから所定の
圧力でエアー又はガスを送り、前記樹脂塗料（Ｐ）を被
塗装パイプラインの小径管８の内部まで環状にして送り
込んでおく。1 and 2 show examples of different diameter pipes in which a large diameter pipe 7 and a small diameter pipe 8 are connected to a straight pipe by a joint 6. First, the required amount of pipe end 7a of the large diameter pipe 7 is Inject epoxy resin paint (P). At this time, preferably, air or gas is sent at a predetermined pressure from the pipe end 7a to send the resin paint (P) into the small diameter pipe 8 of the pipeline to be coated in an annular form.
次いで、小径管塗装用の球体１、大径管塗装用の球体２
をこの順で管端７ａから内部に挿入し。Next, a sphere 1 for painting small diameter pipes and a sphere 2 for painting large diameter pipes.
Insert the tubes into the interior from the tube end 7a in this order.
前記管端７ａにホースを接続してエアー又はガス等の圧
送気体を送る。この圧力は、球体の材質、樹脂塗料の粘
性、パイプの口径などによって異なるが、通常、０，０
５〜３ｋｇ／ｄの範囲内でよい。A hose is connected to the tube end 7a to send pressurized gas such as air or gas. This pressure varies depending on the material of the sphere, the viscosity of the resin paint, the diameter of the pipe, etc., but it is usually 0.0
It may be within the range of 5 to 3 kg/d.
これにより、球体１、球体２は樹脂塗料（Ｐ）を前方に
押し出しつつ大径管７内を前進移動し、その管壁内面に
は球体２によって設定した厚さの塗膜（ｐ）が形成され
る。As a result, the spheres 1 and 2 move forward inside the large-diameter tube 7 while pushing out the resin paint (P) forward, and a coating film (p) with a set thickness is formed by the spheres 2 on the inner surface of the tube wall. be done.
こうして前進した球体２が継手６の縮径部の内壁面に圧
接すると（このとき球体１は小径管８内ニ進入している
）、大径管７内のエアーの圧力が高まり、前記エアーは
球体２の溝４の経路に詰まった樹脂塗料を押し出しつつ
小径管８側に急速に吹き抜け、前方の球体１との間の縮
径部の内壁面６ａは、この高速気流により塗膜が形成さ
れる。When the sphere 2 that has advanced in this way comes into pressure contact with the inner wall surface of the reduced diameter part of the joint 6 (at this time, the sphere 1 has entered the small diameter pipe 8), the pressure of the air in the large diameter pipe 7 increases, and the air is The resin paint clogged in the groove 4 of the sphere 2 is pushed out and rapidly blown through to the small diameter pipe 8 side, and a paint film is formed on the inner wall surface 6a of the reduced diameter part between the sphere 1 and the front sphere 1 by this high-speed airflow. Ru.
この吹き抜けたエアーは小径管塗装用の球体１を押し進
めるから、前記大径管７の場合と同様に、小径管８の管
壁内面には球体１によって希望の厚さの塗膜（ｐ）が形
成される。This blown air pushes the sphere 1 for coating small diameter pipes, so as in the case of the large diameter pipe 7, the sphere 1 coats the inner surface of the wall of the small diameter pipe 8 with the desired thickness (p). It is formed.
なお、前記球体１．２は、ライニング終了後、小径管８
側からエアーを送って逆送し、前記管端７ａで回収する
。Note that the sphere 1.2 is attached to the small diameter pipe 8 after the lining is completed.
Air is sent from the side, sent backwards, and collected at the tube end 7a.
第４図は小径管８をＴ形に接続した異径管についての実
施例である。この場合には、一方の大径管７ｂから前記
実施例と同様にエアー（矢印Ａ）を送って球体１，２を
前進移動させ、他方の大径管７ｃから前記エアーの圧よ
りも減圧したエアー（矢印Ｂ）を送り込むと、このエア
ーは小径管８内に流れるので球体１は大径管７ｃに進入
することなく、小径管８内に移行し、球体２は縮径部の
内壁面に圧接し、前記実施例と同様に作用するのである
。FIG. 4 shows an embodiment of different diameter pipes in which small diameter pipes 8 are connected in a T-shape. In this case, air (arrow A) is sent from one large-diameter pipe 7b to move the spheres 1 and 2 forward in the same way as in the previous embodiment, and the other large-diameter pipe 7c is made to have a pressure lower than that of the air. When air (arrow B) is sent in, this air flows into the small diameter pipe 8, so the sphere 1 moves into the small diameter pipe 8 without entering the large diameter pipe 7c, and the sphere 2 is attached to the inner wall surface of the reduced diameter part. They are in pressure contact and function in the same manner as in the previous embodiment.
上記のごとく、本発明によれば、（イ）口径の異なるパ
イプが接続された複雑な配管系においても、同一口径の
パイプに区切ることなく、異径管のラインを１工程で連
続的にライニングすることができる、（ロ）塗膜の厚さ
は球体又はピグの外径とパイプの内径とのクリアランス
によって自由に設定され、この塗膜厚がパイプの全内周
面に形成されるのでピンホールを生じることがなく、管
の更正効果が長期に保たれる、（ハ）異径管接続部の縮
径部分では圧送気体がノズル効果によって高速で吹き出
すから、この部分の内壁面にも確実に塗膜を形成するこ
とができる、 （ニ）圧送気体への付与圧力は、従前の
工法に比してきわめて低くてもよいから、コンプレッサ
等の加圧装置は小容量のもので足り、燃費などの節減に
よる工事コストの低減化、施工現場への搬送及び設営の
簡易化を実現できる、などの効果が達成される。As described above, according to the present invention, (a) even in a complex piping system in which pipes of different diameters are connected, lines of pipes of different diameters can be lined continuously in one process without dividing into pipes of the same diameter; (b) The thickness of the coating film can be set freely depending on the clearance between the outer diameter of the sphere or the pig and the inner diameter of the pipe, and this coating thickness is formed on the entire inner circumferential surface of the pipe, so it is possible to Holes do not occur, and the pipe straightening effect is maintained for a long time. (c) Since the compressed gas is blown out at high speed by the nozzle effect at the reduced diameter part of the different diameter pipe connection part, it is sure to be applied to the inner wall surface of this part. (d) The pressure applied to the pumped gas can be extremely low compared to previous methods, so a small capacity pressurizing device such as a compressor is sufficient, reducing fuel consumption. Effects such as a reduction in construction costs due to savings in construction costs, and simplification of transportation to the construction site and installation can be achieved.
図面は本発明の方法を具体化した例を示し、第１図及び
第２図は異径管が直管の場合の一実施例の説明図、第３
図は本発明で使用する大径管塗装用の球体、ピグの正面
図、第４図は異径管がＴ形配管された場合の一実施例の
説明図である。
１・・・小径管塗装用の球体、
２・・・大径管塗装用の球体、
３・・・大径管塗装用のピグ、
４・・・溝、
５・・孔、
７・・・大径管。
８ ・小径管。
Ｐ・・・樹脂塗料、
ｐ・・・塗膜。
第１図
第２図
ａ
第３図The drawings show an example embodying the method of the present invention, and FIGS. 1 and 2 are explanatory diagrams of an example in which the different diameter pipe is a straight pipe, and FIG.
The figure is a front view of a sphere or pig for coating large-diameter pipes used in the present invention, and FIG. 4 is an explanatory diagram of an embodiment in which pipes of different diameters are arranged in a T-shape. 1... Sphere for painting small diameter pipes, 2... Sphere for painting large diameter pipes, 3... Pig for painting large diameter pipes, 4... Groove, 5... Hole, 7... Large diameter pipe. 8 ・Small diameter pipe. P...resin paint, p...paint film. Figure 1 Figure 2a Figure 3
Claims (2)
端から樹脂塗料を注入し、次いで小径管塗装用の球体と
、表面に圧送気体通過用の溝を備えた大径管塗装用の球
体又はピグとを挿入し、所定の圧力の圧送気体によりこ
れを移動させ、前記大径管塗装用の球体又はピグが小径
管接続部の管壁内面に圧接したとき、圧送気体が前記溝
を通過して小径管内に流出し前記小径管塗装用の球体を
移動させ、それぞれ異径管の管壁内面に塗膜を形成させ
ることを特徴とするパイプ内面のライニング方法。(1) A resin paint is injected from the end of the large-diameter pipe of the pipe to be painted, which is made by connecting pipes of different diameters, and then a sphere for painting the small-diameter pipe and a large diameter pipe with a groove on the surface for passage of pressurized gas are added. A tube coating sphere or pig is inserted and moved by pressurized gas at a predetermined pressure, and when the large diameter tube coating sphere or pig comes into pressure contact with the inner surface of the pipe wall of the small diameter pipe connection, the pressurized gas A method for lining an inner surface of a pipe, comprising: passing through the groove and flowing into the small diameter pipe, moving the small diameter pipe coating sphere to form a coating film on the inner surface of the pipe wall of each different diameter pipe.
塗装用の球体又はピグを用いる特許請求の範囲第１項記
載のパイプ内面のライニング方法。(2) A method for lining the inner surface of a pipe according to claim 1, which uses a sphere or a pig for coating large diameter pipes, which is provided with a required number of holes for passage of pressurized gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20742785A JPS6265776A (en) | 1985-09-18 | 1985-09-18 | Lining method for inside surface of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20742785A JPS6265776A (en) | 1985-09-18 | 1985-09-18 | Lining method for inside surface of pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6265776A true JPS6265776A (en) | 1987-03-25 |
Family
ID=16539574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20742785A Pending JPS6265776A (en) | 1985-09-18 | 1985-09-18 | Lining method for inside surface of pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6265776A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01110876U (en) * | 1988-01-22 | 1989-07-26 | ||
| JPH01304086A (en) * | 1988-05-31 | 1989-12-07 | Osaka Gas Co Ltd | Lining method for branch pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61245875A (en) * | 1985-04-23 | 1986-11-01 | Osaka Gas Co Ltd | Method for lining inner surface of piping |
-
1985
- 1985-09-18 JP JP20742785A patent/JPS6265776A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61245875A (en) * | 1985-04-23 | 1986-11-01 | Osaka Gas Co Ltd | Method for lining inner surface of piping |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01110876U (en) * | 1988-01-22 | 1989-07-26 | ||
| JPH01304086A (en) * | 1988-05-31 | 1989-12-07 | Osaka Gas Co Ltd | Lining method for branch pipe |
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