JPS62228793A - Anticorrosion hume pipe and manufacture thereof - Google Patents
Anticorrosion hume pipe and manufacture thereofInfo
- Publication number
- JPS62228793A JPS62228793A JP4787087A JP4787087A JPS62228793A JP S62228793 A JPS62228793 A JP S62228793A JP 4787087 A JP4787087 A JP 4787087A JP 4787087 A JP4787087 A JP 4787087A JP S62228793 A JPS62228793 A JP S62228793A
- Authority
- JP
- Japan
- Prior art keywords
- corrosion
- resistant
- layer
- pipe
- concrete
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 238000005260 corrosion Methods 0.000 claims description 66
- 230000007797 corrosion Effects 0.000 claims description 66
- 239000011521 glass Substances 0.000 claims description 24
- 229920005989 resin Polymers 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- 239000003517 fume Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000009415 formwork Methods 0.000 description 11
- 239000002253 acid Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 239000010922 glass waste Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は化学丁場等の廃水と下水道の汚水との排水に
利用されるド水道用の耐食ヒユーム管及びその製造方法
に係り、特にヒユーム管の内表前に耐食樹脂と硬質耐食
チップを均一に分布させてなる耐食チップ層を形成しヒ
ユーム管本体の耐食能力を向Ｆさせた耐食ヒユーム管及
びその製造方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a corrosion-resistant hume pipe for waterworks, which is used for draining wastewater from chemical plants, etc., and sewage water, and a method for manufacturing the same, and particularly relates to a hume pipe. The present invention relates to a corrosion-resistant hume pipe in which a corrosion-resistant chip layer made of uniformly distributed corrosion-resistant resin and hard corrosion-resistant chips is formed on the inner surface of the pipe to improve the corrosion resistance of the hume pipe body, and a method for manufacturing the same.
従来丁場の廃水や家庭の汚水等の排水管にはタレイパイ
プヒューム管等が使用されていた。所がこれら汚水は酸
或いはアルカリ等を含み、特にヒユーム管等はセメント
自体が酸に弱いため、使用寿命は極めて短いものであっ
た。クレイバ、ｒブは酸・アルカリ等に強いが、もろく
又大Ｌ１径の製品は製造に困難が伴う。此の為現在では
下水管に流入する汚水を事前に化学処理をして、極力ヒ
ユーム管の寿命を延している現状である。Traditionally, tall pipes and fume pipes have been used for drainage pipes such as wastewater in residential areas and domestic sewage. However, these sewage water contains acids or alkalis, and the cement itself of humid pipes is particularly susceptible to acids, so their service life was extremely short. Although clay bars and r-builds are resistant to acids and alkalis, they are brittle, and products with a large L1 diameter are difficult to manufacture. For this reason, the current situation is to chemically treat the wastewater that flows into the sewer pipes in advance to extend the life of the sewer pipes as much as possible.
（発明が解決しようとする問題点）
このヒユーム管のに４食を防ぐ為にエポキシ塗装又はＰ
ｖＣライニング等の方法があるが、共に高価であり、ヒ
ユーム管内面のレイタンス（ｌ ａ ｉ Ｌａｎｃｅ）
剥脱により脱落する事故が頻繁に発生している為理想的
ではなかった。耐酸管とじて高炉セメント笠でヒユーム
管を作った例もあるが、高価であり耐食能力も余り向ト
していない。(Problem to be solved by the invention) In order to prevent this fume tube from being eroded, epoxy coating or P.
There are methods such as vC lining, but they are both expensive and reduce the laitance of the inner surface of the humid canal.
This was not ideal as there were frequent accidents where the material fell off due to flaking. There have been examples of making humid pipes using blast furnace cement caps as acid-resistant pipes, but they are expensive and do not have much corrosion resistance.
（問題点を解決するためのｆ段）
この発明は面記のような欠点を解消し、安価にしてかつ
堅固な耐酸ヒユーム管を生産することを目的としたもの
で、説、Ｑ研究した結果、次の発明が完成された。(Step F to solve the problem) This invention aims to eliminate the drawbacks such as those mentioned above and to produce an inexpensive and strong acid-resistant hume pipe.As a result of theory and Q research, , the following inventions were completed.
すなわち、この発明の目的は遠心力で堅固な耐食層をヒ
ユーム管内前に形成させた耐食ヒユーム管及びその製造
方法を提供することにある。又耐食性を持ち適当な強度
もそなえ、■粘着力の強い合成樹脂、特にエポキシ樹脂
は高価である為、その使用１１１を減らし、同じく完全
耐食性をそなえる安価なガラスチップを混入してコスト
を下げ、安価な耐食ヒユーム管及びその製造方法を提供
せんとするものである。又一般にヒユーム管は製造［程
に於いて遠心力により管内部にレイタンスの層か形成さ
れるので耐食ペーストを内部に形成してもコンクリート
との接着は悪いために耐久性に乏しいから、コンクリー
トが゛凝固する萌にレイタンスをかきだし、ガラスチッ
プ（約３′″／。−６１ん）を回転中の型枠内に投入し
てコンクリートと一緒に凝結させる。、凝結後ヒユーム
管は型枠に入ったま＼スチーム養生する。養生後ガラス
チップに付着されたセメント又はレイタンス等を圧縮空
気で除去してコンクリートに埋ったガラスチップの表面
を露出させ、これにエポキシ樹脂とガラスチップのペー
ストを回転させながら乾燥するまで均一に付着させて、
三層（コンクリート、ガラスチップ、エポキシペースト
）で−・体となった堅固な耐酸、耐アルカリヒユーム管
及びその製造方法を提供することを目的としている。That is, an object of the present invention is to provide a corrosion-resistant hume tube in which a hard corrosion-resistant layer is formed in front of the hume tube by centrifugal force, and a method for manufacturing the same. In addition, it has corrosion resistance and appropriate strength, ■ Synthetic resin with strong adhesive strength, especially epoxy resin, is expensive, so we reduce the use of synthetic resin111, and lower costs by mixing in inexpensive glass chips that also have complete corrosion resistance. It is an object of the present invention to provide an inexpensive corrosion-resistant hume pipe and a method for manufacturing the same. In addition, in general, during the manufacture of humid pipes, a layer of laitance is formed inside the pipe due to centrifugal force, so even if a corrosion-resistant paste is applied inside the pipe, the adhesion to concrete is poor, resulting in poor durability. ``Laitance is scraped out from the solidifying seedlings, and glass chips (approximately 3'''/-61mm) are put into the rotating formwork and allowed to set together with the concrete. After setting, the humid pipe enters the formwork. Tama\ Steam curing. After curing, the cement or laitance attached to the glass chips is removed using compressed air to expose the surface of the glass chips buried in the concrete, and the paste of epoxy resin and glass chips is applied to this while rotating. Apply it evenly until dry,
The purpose of the present invention is to provide a solid acid- and alkali-resistant hume pipe made of three layers (concrete, glass chips, and epoxy paste) and a method for manufacturing the same.
このように、この発明は前記目的を達成する為の１段と
して、遠心力成形法によりパイプ状にコンクリート層を
硬化形成したコンクリート管と、このコンクリート管の
内周前に耐食樹脂層を密着形成させる耐食ヒユーム管に
おいて、コンクリート層と耐食樹脂層との間に適当な粒
度の硬質耐食チップを均一・分布させ、各チップ粒Ｙ−
はその一部がコンクリート層と耐食樹脂層に埋めこまれ
てなる三層一体構造にしてなることを特徴とする。As a step toward achieving the above object, the present invention provides a concrete pipe in which a concrete layer is hardened into a pipe shape using a centrifugal force forming method, and a corrosion-resistant resin layer is closely formed in front of the inner circumference of the concrete pipe. In the corrosion-resistant fume pipe, hard corrosion-resistant chips of appropriate particle size are uniformly distributed between the concrete layer and the corrosion-resistant resin layer, and each chip grain Y-
It is characterized by a three-layer integrated structure in which a part of it is embedded in a concrete layer and a corrosion-resistant resin layer.
この発明はまた、上記にともない耐食ヒユーム管の製造
方法において、前記コンクリート層が凝固する前に適当
な粒度の硬質耐食チップをコンクリート層の内周前に均
一分布し粒子が一部分コンクリート層内に埋まるように
させ、コンクリート層と硬質耐食チップ層の露出部分に
耐食樹脂層を密着形成させるようにしたことを特徴とす
る。In accordance with the above, the present invention also provides a method for manufacturing a corrosion-resistant humid pipe, in which hard corrosion-resistant chips of appropriate particle size are uniformly distributed in front of the inner circumference of the concrete layer before the concrete layer solidifies, and the particles are partially buried in the concrete layer. The present invention is characterized in that the corrosion-resistant resin layer is closely formed on the exposed portions of the concrete layer and the hard corrosion-resistant chip layer.
（作用）
上記によれば、耐食ヒユーム管における硬質耐食チップ
の粒子−が一部コンクリート層とその硬化によって一体
化し、さらにその露出部分に耐食樹脂層を密着形成すれ
ば、コンクリート層と耐食樹脂層は硬質耐食チップ粒子
がくさびとしての作用をなし、一体に結合するようにな
る。又、耐食チップ及び耐食樹脂にガラスファイバーを
通ｉｔ ｉｕ合することによってひびわれ防１Ｆ及び補
強をはかれる。(Function) According to the above, if some of the particles of the hard corrosion-resistant chips in the corrosion-resistant fume pipe are integrated with the concrete layer by its hardening, and furthermore, the corrosion-resistant resin layer is closely formed on the exposed part, the concrete layer and the corrosion-resistant resin layer In this case, the hard corrosion-resistant chip particles act as a wedge and are bonded together. Furthermore, cracking prevention and reinforcement can be achieved by passing glass fiber through the corrosion-resistant chip and the corrosion-resistant resin.
（実施例〕
次に、この発明の一実施例を添付図前にもとすき説明す
る。(Embodiment) Next, an embodiment of the present invention will be described with reference to the accompanying drawings.
第１図はこの発明の方法により作られる耐食ヒユーム管
の一例を示す断面図、第２図はこの方法の−・実施例に
おけるヒユーム管製造装置の概略図である。斤通のコン
クリートパイプは、セメント、砂、小石（礫）を一定の
割合で混ぜこれを練りまぜたもの（コンクリート）を補
強鉄筋などと共に円管状型枠に入れ、遠心力を利用して
つくられたものである。第１図において、この考案はコ
ンクリートパイプ１の製造時に、厚さを従来のコンクリ
ートパイプより５”／、−６”へ位減少させ、このコン
クリート層２がまだ固まらないうちに硬質耐食チップす
なわちガラスチップ４（ガラス瓶をくだいて篩にかけた
３”／、−６−へのチップ）を型枠５内に入れ、遠心力
によりガラスチップ４が内表面で均一に分布される各々
一部がコンクリート層２内に埋め込まれる。その後従来
のヒユーム管製造プロセスの通りスチーム養生によりコ
ンクリート層２が所要の強度に達した時、型枠５と共に
遠心台６に戻し、ガラスチップ４に付着したセメントと
レイタンスを除去した後、回転させなからエポキシ樹脂
とガラスチップ（あるいはセラミックチップ）とを練り
まぜたペースト（以ドはガラスペーストという）を所要
の厚さの層状耐食チップ層３に形成させたものである。FIG. 1 is a sectional view showing an example of a corrosion-resistant hume tube manufactured by the method of the present invention, and FIG. 2 is a schematic diagram of a hume tube manufacturing apparatus in an embodiment of this method. Concrete pipes made by Katotsu are made by mixing cement, sand, and pebbles (gravel) in a certain ratio, putting the mixture (concrete) into a circular tubular formwork along with reinforcing steel, and using centrifugal force. It is something that In Fig. 1, this invention reduces the thickness of the concrete pipe 1 by 5"/-6" compared to the conventional concrete pipe during manufacture, and hard corrosion-resistant chips or glass is added to the concrete layer 2 before it hardens. Chips 4 (chips made by breaking a glass bottle and passing through a sieve) are placed in a formwork 5, and the glass chips 4 are evenly distributed on the inner surface by centrifugal force. Each part is formed into a concrete layer. After that, when the concrete layer 2 reaches the required strength by steam curing as in the conventional humid tube manufacturing process, it is returned to the centrifuge table 6 together with the formwork 5, and the cement and laitance attached to the glass chips 4 are removed. After removal, a paste (hereinafter referred to as glass paste) made by kneading epoxy resin and glass chips (or ceramic chips) without rotating is formed into a layered corrosion-resistant chip layer 3 of a required thickness. .
なお、第２図において、６は遠心台である。遠心台６に
は−・対の回転ローラー８とモーター７とＩｔ＜動ベル
ト９とが取りつけられている。製造時は型枠５を一対の
ローラー８の上に置き、モーター７により伝動ベルト９
を介してローラー８を回転させる。そして、コンクリー
トが回転中の型枠５内に投入されると、均一・な肉厚を
有するコンクリート層２が形成される。In addition, in FIG. 2, 6 is a centrifuge table. A pair of rotating rollers 8, a motor 7, and a moving belt 9 are attached to the centrifugal table 6. During manufacturing, the formwork 5 is placed on a pair of rollers 8, and the motor 7 drives the transmission belt 9.
The roller 8 is rotated through the . When concrete is poured into the rotating formwork 5, a concrete layer 2 having a uniform thickness is formed.
なお、コンクリート層２が固まる葭に（約３０〜４０分
間）ガラスチップ４を円管型枠５内に投入し、遠心力に
よりコンクリート層２の内表前に均一に分布する。コン
クリート層２が固まったら回転をＩＬめ、ヒユーム管は
型枠５と共にスチーム養生を経て所要の強度に達する。Incidentally, glass chips 4 are introduced into the circular pipe form 5 while the concrete layer 2 hardens (for about 30 to 40 minutes), and are uniformly distributed in front of the inner surface of the concrete layer 2 by centrifugal force. Once the concrete layer 2 has hardened, the rotation is stopped and the humid pipe is steam-cured together with the formwork 5 to reach the required strength.
しかる後、ヒユーム管１を型枠５に入れたま）回転ロー
ラー８のににのせてゆっくり回転させながら５圧縮＋、
％気でガラスチップ４の表前についたセメントとレイタ
ンスとをガラスチップ４のト面が完全に見える迄除去し
、回転速度を高めてから、ガラスペーストを入れ、滑ら
かな層状に仕Ｆげる。After that, while putting the humid tube 1 into the formwork 5), put it on the rotating roller 8 and slowly rotate it while compressing it 5+.
Remove the cement and laitance attached to the front surface of the glass chip 4 with a small amount of air until the top surface of the glass chip 4 is completely visible.After increasing the rotation speed, add the glass paste and finish it into a smooth layer. .
ガラスペーストが完全に固まった時（通常１０〜１５分
）そ−ターフを停止Ｌシて円管状型枠５とヒユーム管！
を水中に入れて養生し、こぎに耐食チップ層３が形成さ
れる。When the glass paste has completely hardened (usually 10 to 15 minutes), stop the turf and attach the tubular formwork 5 and the tube!
A corrosion-resistant chip layer 3 is formed on the saw by putting it in water and curing it.
この発明に使用されるガラスチップ４はガラスの廃品を
回収して加−Ｌされるもので、さらにガラスの原材料か
ら大ｊＩｔに生産されたものを使用してもよいのはもち
ろんである。又、ガラスペーストの中にガラスファイバ
ーを適用混入することにより、ひびわれ防ＩＦ及び強度
の増加をはかることも出来る。The glass chips 4 used in the present invention are made by collecting and adding glass waste products, and of course, those produced in large quantities from glass raw materials may also be used. Furthermore, by incorporating glass fiber into the glass paste, crack prevention IF and strength can be increased.
この発明は、ヒユーム管の内に前に耐食樹脂と硬質耐食
チップを均一に分４ＩＴさせてなる耐食チップ層を形成
することができるので、ヒユーム管本体の耐酸性を増す
ことができ、ヒユーム管の寿命を延ばすことができると
いう効果が得られる。そして硬質耐食チップとして安価
なガラスチップを使用したので製造コストの安いヒユー
ム管を得ることができる。また、硬質耐食チップはその
一部がコンクリート層と耐食樹脂層とに埋め込んである
ので、その結合状態は一体となって一層堅固な耐食ヒユ
ーム管を安価に提供できるという効果がある。This invention makes it possible to form a corrosion-resistant chip layer in which a corrosion-resistant resin and a hard corrosion-resistant chip are uniformly distributed in the front of a hume tube, thereby increasing the acid resistance of the hume tube body. This has the effect of extending the life of the Furthermore, since an inexpensive glass chip is used as the hard corrosion-resistant chip, it is possible to obtain a humid tube with low manufacturing cost. In addition, since a part of the hard corrosion-resistant chip is embedded in the concrete layer and the corrosion-resistant resin layer, the joint state of the chip is integrated, and an even stronger corrosion-resistant fume pipe can be provided at a low cost.
第１図はこの発明の耐食ヒユーム管製造方法の−・実施
例によりつくられる一耐食ヒューム管の断面図、第２図
はこの発明の上記実施例におけるヒユーム管の製造装置
の一例概略側面図である。
１・・・・・・コンクリートパイプまたはヒユーム管２
−−−−−−コンクリート層
３・・・・・・ガラスペースト
４・・・・・・ガラスデツプ
５・・・・・・円管状型枠
６・・・・・・遠心台
７・・・・・・モーター
８・・・・・・回転ローラー
９・・・・・・伝動ベルトFIG. 1 is a cross-sectional view of a corrosion-resistant hume tube manufactured by an embodiment of the corrosion-resistant hume tube manufacturing method of the present invention, and FIG. 2 is a schematic side view of an example of the hume tube manufacturing apparatus in the above-mentioned embodiment of the present invention. be. 1... Concrete pipe or humid pipe 2
-------- Concrete layer 3...Glass paste 4...Glass depth 5...Cylindrical formwork 6...Centrifugal stand 7... ... Motor 8 ... Rotating roller 9 ... Transmission belt
Claims (6)
リート管とこのコンクリート管の内周面に耐食樹脂層を
密着形成してなる耐食ヒューム管において、コンクリー
ト層と耐食樹脂層との間に適当な粒度の硬質耐食チップ
を均一に分布させてなる耐食チップ層を介在せしめ、耐
食チップ層の硬質耐食チップはその一部がコンクリート
層と耐食樹脂層に埋めこまれてなることを特徴とする耐
食ヒューム管。(1) In a corrosion-resistant fume pipe made of a pipe-shaped concrete pipe with a hardened concrete layer and a corrosion-resistant resin layer closely formed on the inner circumferential surface of the concrete pipe, an appropriate particle size is applied between the concrete layer and the corrosion-resistant resin layer. A corrosion-resistant fume pipe characterized in that a corrosion-resistant chip layer is formed by uniformly distributing hard corrosion-resistant chips, and the hard corrosion-resistant chips of the corrosion-resistant chip layer are partially embedded in a concrete layer and a corrosion-resistant resin layer. .
徴とする特許請求の範囲第１項記載の耐食ヒューム管。(2) The corrosion-resistant fume tube according to claim 1, wherein the hard corrosion-resistant chip is a glass chip.
を特徴とする特許請求の範囲第１項記載の耐食ヒューム
管。(3) The corrosion-resistant fume tube according to claim 1, wherein the hard corrosion-resistant chip is a ceramic chip.
する特許請求の範囲第１項記載の耐食ヒューム管。(4) The corrosion-resistant fume tube according to claim 1, wherein the corrosion-resistant resin layer is made of epoxy resin.
量混入して成ることを特徴とする特許請求の範囲第１項
記載の耐食ヒューム管。(5) The corrosion-resistant fume tube according to claim 1, wherein the corrosion-resistant resin layer and the corrosion-resistant chip are made by mixing an appropriate amount of glass fiber.
リート管とこのコンクリート管の内周面に耐食樹脂層を
密着形成してなる耐食ヒューム管の製造方法において、
コンクリート層が凝固する前に適当な粒度の硬質耐食チ
ップを、コンクリート層の内周面に均一分布し粒子が一
部分コンクリート層内に埋まるようにさせ、コンクリー
ト層と硬質耐食チップ層の露出部分に上記耐食樹脂層を
密着形成させるようにしたことを特徴とする耐食ヒュー
ム管の製造方法。(6) A method for manufacturing a corrosion-resistant fume pipe comprising a concrete pipe in which a concrete layer is hardened into a pipe shape and a corrosion-resistant resin layer closely formed on the inner peripheral surface of the concrete pipe,
Before the concrete layer solidifies, hard corrosion-resistant chips of appropriate particle size are uniformly distributed on the inner circumferential surface of the concrete layer so that some of the particles are buried in the concrete layer, and the exposed parts of the concrete layer and the hard corrosion-resistant chip layer are coated with the A method for manufacturing a corrosion-resistant fume tube, characterized in that a corrosion-resistant resin layer is closely formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4787087A JPS62228793A (en) | 1987-03-04 | 1987-03-04 | Anticorrosion hume pipe and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4787087A JPS62228793A (en) | 1987-03-04 | 1987-03-04 | Anticorrosion hume pipe and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62228793A true JPS62228793A (en) | 1987-10-07 |
| JPS6338591B2 JPS6338591B2 (en) | 1988-08-01 |
Family
ID=12787410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4787087A Granted JPS62228793A (en) | 1987-03-04 | 1987-03-04 | Anticorrosion hume pipe and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62228793A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235783A (en) * | 1987-03-24 | 1988-09-30 | テイヒュー株式会社 | Concrete group composite pipe and manufacture thereof |
| JPH01176882A (en) * | 1987-12-29 | 1989-07-13 | Kurimoto Concrete Kogyo Kk | Cylindrical reinforced concrete pipe and manufacture thereof |
| WO1993001934A1 (en) * | 1991-07-22 | 1993-02-04 | Toray Industries, Inc. | Concrete structure and method of fabricating said structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4936777A (en) * | 1972-08-10 | 1974-04-05 | ||
| JPS5226013A (en) * | 1975-08-23 | 1977-02-26 | Mitsubishi Mining & Cement Co Ltd | Compound tube |
| JPS52132020A (en) * | 1976-04-29 | 1977-11-05 | Kuraray Co | Method of manufacturing concrete pipes lined with resin |
| JPS5314774A (en) * | 1976-07-27 | 1978-02-09 | Daiichi Kasei | Plastic moldings and process for manufacture |
| JPS5564579U (en) * | 1978-10-26 | 1980-05-02 |
-
1987
- 1987-03-04 JP JP4787087A patent/JPS62228793A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4936777A (en) * | 1972-08-10 | 1974-04-05 | ||
| JPS5226013A (en) * | 1975-08-23 | 1977-02-26 | Mitsubishi Mining & Cement Co Ltd | Compound tube |
| JPS52132020A (en) * | 1976-04-29 | 1977-11-05 | Kuraray Co | Method of manufacturing concrete pipes lined with resin |
| JPS5314774A (en) * | 1976-07-27 | 1978-02-09 | Daiichi Kasei | Plastic moldings and process for manufacture |
| JPS5564579U (en) * | 1978-10-26 | 1980-05-02 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235783A (en) * | 1987-03-24 | 1988-09-30 | テイヒュー株式会社 | Concrete group composite pipe and manufacture thereof |
| JPH01176882A (en) * | 1987-12-29 | 1989-07-13 | Kurimoto Concrete Kogyo Kk | Cylindrical reinforced concrete pipe and manufacture thereof |
| WO1993001934A1 (en) * | 1991-07-22 | 1993-02-04 | Toray Industries, Inc. | Concrete structure and method of fabricating said structure |
| US5447798A (en) * | 1991-07-22 | 1995-09-05 | Toray Industries, Inc. | Concrete article and method of producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6338591B2 (en) | 1988-08-01 |
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