JPH03147831A - Steel pipe lined internally and externally with fluoroplastic and manufacture thereof - Google Patents
Steel pipe lined internally and externally with fluoroplastic and manufacture thereofInfo
- Publication number
- JPH03147831A JPH03147831A JP1285039A JP28503989A JPH03147831A JP H03147831 A JPH03147831 A JP H03147831A JP 1285039 A JP1285039 A JP 1285039A JP 28503989 A JP28503989 A JP 28503989A JP H03147831 A JPH03147831 A JP H03147831A
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- liner
- fluororesin
- lined
- flange
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 80
- 239000010959 steel Substances 0.000 title claims abstract description 80
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229920002313 fluoropolymer Polymers 0.000 title abstract 3
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000004513 sizing Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 7
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- -1 tetrafluoroethylene perfluorovinyl ether Chemical compound 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、化学工業、医薬、農薬、ファインケミカルの
分野で使用される各種腐食薬液やガス輸送用のライニン
グ鋼管に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to lined steel pipes for transporting various corrosive chemicals and gases used in the fields of chemical industry, medicine, agricultural chemicals, and fine chemicals.
（従来の技術）
従来、各種腐食性の薬液やガスを輸送し所定の装置に供
給するため、第４図にその一例の吹込管を示すような内
外面ライニング鋼管が使用されていた。第４図に示す吹
込管において、フランジ１１−１．１１−２を有する鋼
管１２の内周面１２−１および外周面１２−２に、四フ
フ化エチレン樹脂や四フッ化エチレンーパーフルオロビ
ニルエーテル共重合体等のフッ素樹脂からなるライナー
１３を設けて、吹込管１４を構成していた。(Prior Art) Conventionally, inner and outer lined steel pipes, such as the one shown in FIG. 4, have been used to transport various corrosive chemical solutions and gases and supply them to predetermined equipment. In the blowing pipe shown in FIG. 4, tetrafluoroethylene resin or tetrafluoroethylene perfluorovinyl ether is applied to the inner peripheral surface 12-1 and outer peripheral surface 12-2 of the steel pipe 12 having flanges 11-1 and 11-2. A liner 13 made of a fluororesin such as a copolymer was provided to constitute a blowing pipe 14.
この際、製造上、鋼管１２の端面１２−３は内周面１２
−１および外周面１２−２にそれぞれ設けたライナーｌ
３を融着することにより接合するとともに、フランジ部
１１−２とライナー１３との接合も溶接または溶着によ
り実施していた。At this time, due to manufacturing, the end surface 12-3 of the steel pipe 12 is
-1 and liner l provided on the outer peripheral surface 12-2, respectively.
The flange portion 11-2 and the liner 13 were also joined by welding or welding.
（発明が解決しようとする課題）
そのため、上述した吹込管１４を、高温・高腐食性の流
体に使用すると、端面１２−３の融着部やフランジ部１
１−２の溶接または溶着部にクラック等が生し、このク
ランク等に起因して端部工２−３やフランジ１１−２の
破損やハズレ等のトラブルが生じる問題があった。その
ため、上述した吹込管１４では、長期使用に耐える信頼
性を得ることができない問題があった。(Problem to be Solved by the Invention) Therefore, when the above-described blowing pipe 14 is used for high temperature and highly corrosive fluid, the fused portion of the end face 12-3 and the flange portion 1
There is a problem in that cracks are formed in the welded or welded portion 1-2, and problems such as breakage and dislocation of the end work 2-3 and the flange 11-2 occur due to the crank. Therefore, the above-described blowing pipe 14 has a problem in that it is not reliable enough to withstand long-term use.
本発明の目的は上述した課題を解消して、端部等におけ
る破損がなく信頼性の高いフッ素樹脂内外周面ライニン
グ鋼管およびその製造方法を提供しようとするものであ
る。An object of the present invention is to solve the above-mentioned problems and provide a highly reliable steel pipe lined with fluororesin inner and outer circumferential surfaces without damage at the ends, etc., and a method for manufacturing the same.
（課題を解決するための手段）
本発明のフッ素樹脂内外周面ライニング鋼管は、鋼管の
内外周面をフッ素樹脂製ライナーによりライニングした
ライニング鋼管において、鋼管の内外周面をフッ素樹脂
製ライナーにより一体にライニングしたことを特徴とす
るものである。(Means for Solving the Problems) The fluororesin-lined steel pipe of the present invention is a lined steel pipe in which the inner and outer circumferential surfaces of the steel pipe are lined with a fluororesin liner, in which the inner and outer circumferential surfaces of the steel pipe are integrated with the fluororesin liner. It is characterized by being lined with.
また、本発明のフッ素樹脂内外周面ライニング鋼管の製
造方法は、外側にフランジ部を有する鋼管の外径より大
きい内径のフッ素樹脂製ライナーを成形し、成形したラ
イナーを加熱したサイジングダイにより鋼管の内径より
小さい外径となるよう引き抜き加工し、引き抜き加工し
たライナーを鋼管内に挿入して加熱することにより鋼管
の内側のライニングを形成した後、鋼管端部より突出し
たライナー端面をフレアー加工し、加工した端部を治具
で固定して鋼管の外周面に沿って移動させ、ライナー端
面のフレアー加工部をフランジ部に固定することにより
内外周面を一体にフッ素樹脂製ライナーによりライニン
グしたことを特徴とするものである。In addition, the method for manufacturing a steel pipe lined with fluororesin inner and outer circumferential surfaces of the present invention involves molding a fluororesin liner having an inner diameter larger than the outer diameter of the steel pipe having a flange portion on the outside, and using a sizing die that heats the molded liner to form a steel pipe. The inner lining of the steel pipe is formed by drawing the liner so that it has an outer diameter smaller than the inner diameter, inserting the drawn liner into the steel pipe and heating it, and then flaring the end surface of the liner that protrudes from the end of the steel pipe. By fixing the processed end with a jig and moving it along the outer circumferential surface of the steel pipe, and fixing the flared part of the liner end to the flange, the inner and outer circumferential surfaces were integrally lined with a fluororesin liner. This is a characteristic feature.
（作 用）
上述した構成において、鋼管の端部またはフランジ部に
おける融着部や溶接部のない一体構造のフッ素樹脂から
なるライナーを有するライニング鋼管が、端部等におけ
るクランクに起因する破損がなく高い信頼性を得ること
ができることを見出した。(Function) In the above-mentioned configuration, a lined steel pipe having a liner made of a monolithic fluororesin without any fused or welded parts at the ends or flanges of the steel pipe is free from damage caused by cranking at the ends, etc. It has been found that high reliability can be obtained.
また、上述した製造方法の構成において、鋼管の外径よ
り大きい内径を有するライナーをサイジングダイにより
鋼管の内径より小さい外径としたライナーを使用し、鋼
管内に通して端部を鋼管外へ突出した状態で一端加熱し
て内側のライニングを構成した後、突出した端部をフレ
アー加工してその端部を治具で固定して、鋼管の外周面
に沿ってフランジまで移動させることにより、内周面お
よび外周面においてライナーが鋼管に密着し、しかも融
着部を皆無とすることができる。In addition, in the configuration of the manufacturing method described above, a liner having an inner diameter larger than the outer diameter of the steel pipe is made into an outer diameter smaller than the inner diameter of the steel pipe using a sizing die, and the liner is passed through the steel pipe and the end protrudes outside the steel pipe. After forming the inner lining by heating one end of the steel pipe, the protruding end is flared, the end is fixed with a jig, and the inner lining is moved along the outer circumference of the steel pipe to the flange. The liner is in close contact with the steel pipe on the circumferential surface and the outer circumferential surface, and there is no fused portion at all.
使用するフッ素樹脂の種類は、特に限定するものでなく
どのようなものでも使用できるが、その中でも高温・高
強度で高耐久性の四フッ化エチレン樹脂（以下、ＰＴＦ
Ｅと記す）を使用すると好ましい。The type of fluororesin used is not particularly limited and any type can be used, but among them, polytetrafluoroethylene resin (hereinafter referred to as PTF), which is high temperature, high strength, and highly durable, is used.
It is preferable to use E).
（実施例）
第１図（ａ）〜Ｃｄ）はそれぞれ本発明のフッ素樹脂内
外周面ライニング鋼管の製造方法の概念を説明するため
の図である。まず、第１図（ａ）に示すように、内外面
（両面）ライニングしようとする鋼管１の内径：Ｄ、よ
り大きい内径：ＤＩのＰＴＦＩＥ製のライナー２を成形
し、そのライナー２を加熱したサイジングダイ３で、鋼
管１の内径：Ｄ、より小さい外径＝Ｄ２になるよう引き
抜き加工する。(Example) FIGS. 1(a) to 1Cd) are diagrams for explaining the concept of the method for manufacturing a steel pipe with fluororesin inner and outer circumferential surfaces lining of the present invention, respectively. First, as shown in FIG. 1(a), a liner 2 made of PTFIE with an inner diameter of D and a larger inner diameter of DI of a steel pipe 1 to be lined on the inner and outer surfaces (both sides) was formed, and the liner 2 was heated. The sizing die 3 is used to draw the steel pipe 1 so that the inner diameter is D and the smaller outer diameter is D2.
従って、引き抜き加工したＰＴＦＥ製のライナー２は、
両面ライニングしようとする鋼管１内に容易に挿入でき
る。挿入後、第１図（ｂ）に示すように、再加熱してラ
イナー２を復元膨張させてライナー２を鋼管ｌの内面に
密着させるとともに、突出したライナー２の端面２−１
をフレアー加工する。Therefore, the drawn PTFE liner 2 is
It can be easily inserted into the steel pipe 1 to be lined on both sides. After insertion, as shown in FIG. 1(b), the liner 2 is reheated to restore and expand, bringing the liner 2 into close contact with the inner surface of the steel pipe l, and the protruding end surface 2-1 of the liner 2
Flare processing.
次に、第１図（ｃ）に示すように、治具４でフレアー加
工した端面２−１を固定した後、鋼管１の外周面上を治
具４を矢印の方向に移動させて、ライナー２の端面２−
１をフランジ部５まで到達させる。Next, as shown in FIG. 1(c), after fixing the flared end surface 2-1 with the jig 4, the jig 4 is moved in the direction of the arrow on the outer peripheral surface of the steel pipe 1, and the liner 2 end face 2-
1 to reach the flange portion 5.
そして、第１図（ｄ）に示すように、ライナー２のフレ
アー加工された端面２−１をフランジ部５に固定して、
本発明のフッ素樹脂内外ライニング鋼管を得ている。Then, as shown in FIG. 1(d), the flared end surface 2-1 of the liner 2 is fixed to the flange portion 5,
A steel pipe with inner and outer lining of fluororesin according to the present invention is obtained.
第２図は本発明のフッ素樹脂内外周面ライニング鋼管の
先端部の状態を示す図である。第２図に示すように、ラ
イニングに際し、鋼管１の先端部とライナー２との間に
クリアランス６を設けると、使用時のライナー２の伸縮
を吸収できるため、さらに好ましい。FIG. 2 is a diagram showing the state of the tip of the steel pipe with inner and outer circumferential surfaces lined with fluororesin according to the present invention. As shown in FIG. 2, it is more preferable to provide a clearance 6 between the tip of the steel pipe 1 and the liner 2 during lining, since this can absorb the expansion and contraction of the liner 2 during use.
以下、実際の例について説明する。An actual example will be explained below.
尖施班 ５０Ａの鋼管の内外面を実際にライニングした。Sharp treatment group We actually lined the inner and outer surfaces of a 50A steel pipe.
５０Ａの鋼管として、５ＴＰＧ −ＳＣｈ −４０規格
の鋼管を使用した。規格により、鋼管の外径は６０．５
ｍｍφ、内径は４７．９ｍ−φである。この鋼管の内外
面にライニングするのに使用するＰＴＦＥ製のライナー
としては、外径５７．０■−φ、肉厚２．５１のライナ
ーを使用した。次に、そのライナーを引き抜きサイジン
グ加工して、５２．７ａ＋＋＋＋φの外径となるよう絞
り加工した。従って、ＰＴＦＥ製のライナーの寸法関係
を鋼管外径〉ライナー外径〉ライナー内径〉鋼管内径と
なるように、ライナー寸法を適正に定めた。次に、鋼管
内に挿入可能な寸法にサイジングされたライナーを鋼管
内に挿入して加熱することによりライナーを鋼管内周面
に密着させた後、鋼管の端部から突出したライナーの端
面をフレアー加工した。A 5TPG-SCh-40 standard steel pipe was used as the 50A steel pipe. According to the standard, the outer diameter of the steel pipe is 60.5
mmφ, and the inner diameter is 47.9 m-φ. The PTFE liner used to line the inner and outer surfaces of this steel pipe had an outer diameter of 57.0 mm and a wall thickness of 2.5 mm. Next, the liner was pulled out, sized, and drawn to have an outer diameter of 52.7a++++φ. Therefore, the liner dimensions were appropriately determined so that the dimensional relationship of the PTFE liner was steel pipe outer diameter>liner outer diameter>liner inner diameter>steel pipe inner diameter. Next, a liner sized to allow insertion into the steel pipe is inserted into the steel pipe and heated to bring the liner into close contact with the inner peripheral surface of the steel pipe.Then, the end surface of the liner protruding from the end of the steel pipe is flared. processed.
次に、第３図に示すように、フレアー加工した部分２−
１を、治具４にて固定した。治具４は、外側フランジ４
−１ と内側フランジ４−２とより構成するとともに、
内側フランジ４−２は２分割フランジとしておき、後述
する外面ライニング後分割して取りはずせるよう構成し
た。Next, as shown in Fig. 3, the flared part 2-
1 was fixed with a jig 4. The jig 4 is the outer flange 4
-1 and an inner flange 4-2,
The inner flange 4-2 is a two-part flange, and is constructed so that it can be separated and removed after lining the outer surface, which will be described later.
フレアー加工後、鋼管外面にシリコーングリース等の潤
滑剤を塗付した。次に、ｒ’ＴＦＥ製のライナーが反転
して外面ライニングされるように、固定した治具ごと鋼
管にそってフランジ部５に向かって引き込んだ。引き込
む際のスピードは３０ｃｍ／分で一定の速度になるよう
にした。最後に、ライナーのフレアー加工部をフランジ
部８に接着剤等により固定して、本発明のフッ素樹脂内
外周面ライニング鋼管を得た。After flaring, a lubricant such as silicone grease was applied to the outer surface of the steel pipe. Next, the fixed jig was pulled toward the flange portion 5 along the steel pipe so that the r'TFE liner was turned over and lined with the outer surface. The retracting speed was kept constant at 30 cm/min. Finally, the flared portion of the liner was fixed to the flange portion 8 with an adhesive or the like to obtain a steel pipe lined with fluororesin on the inner and outer peripheral surfaces of the present invention.
得られた本発明のフッ素樹脂内外周面ライニング鋼管を
高温（１８０°Ｃ）と低温（常温）との間で熱サイクル
テストを１００回繰り返して試験したが、変形、クラン
ク等の異常は生じなく、高品質であることがｉ’ｉ認さ
れた。The obtained steel pipe with fluororesin inner and outer circumferential lining of the present invention was subjected to a thermal cycle test repeated 100 times between high temperature (180°C) and low temperature (room temperature), but no abnormalities such as deformation or cranking occurred. , was recognized to be of high quality.
本発明は上述した実施例にのみ限定されるものではなく
、幾多の変形、変更が可能である。例えば、上述した実
施例では、フッ素樹脂としてＰＴＦＥを使用したが、他
のフッ素樹脂を使用しても同様の効果が得られることは
いうまでもない。The present invention is not limited only to the embodiments described above, and numerous modifications and changes are possible. For example, in the embodiments described above, PTFE was used as the fluororesin, but it goes without saying that similar effects can be obtained by using other fluororesins.
（発明の効果）
以上の説明から明らかなように、本発明によれば、鋼管
の端部等におけるライナーの融着等がないため、端部等
における破損がなく信頼性の高いフッ素樹脂内外ライニ
ング鋼管を得ることができる。(Effects of the Invention) As is clear from the above description, according to the present invention, there is no fusion of the liner at the ends of the steel pipe, so there is no damage at the ends, etc., and highly reliable fluororesin inner and outer linings. You can get steel pipes.
また、本発明の製造方法によれば、所定の径を有するラ
イナーを使用することにより、鋼管端部を一体に形成で
きるとともに、ライナーの先端部をフレアー加工するこ
とにより、外周面のライニング後鋼管のフランジ部へ接
着剤等により簡単に固定できるため、上述した端部等に
おける破損がなく信頼性の高いフッ素樹脂内外ライニン
グ鋼管を安価かつ簡単に得ることができる。Further, according to the manufacturing method of the present invention, by using a liner having a predetermined diameter, the end of the steel pipe can be formed integrally, and by flaring the tip of the liner, the steel pipe can be formed after lining the outer peripheral surface. Since it can be easily fixed to the flange portion of the tube with an adhesive or the like, it is possible to easily obtain a highly reliable inner and outer fluororesin-lined steel tube that is free from damage at the ends and the like described above.
第１図（ａ）〜（ｄ）はそれぞれ本発明のフッ素樹脂内
外周面ライニング鋼管の製造方法の概念を説明するため
の図、
第２図は本発明のフッ素樹脂内外周面ライニング鋼管の
先端部の状態を示す図、
第３図はライナーのライニング工程を示す図、第４図は
従来のフッ素樹脂内外周面ライニング鋼管の一例を示す
図である。
ｌ・・・鋼管 ２・・・ライナー２−１
・・・端面 ３・・・サイジングダイ４・・
・治具 ５・・・フランジ部６・・・クリ
アランス
第２図
イ
第３図Figures 1 (a) to (d) are diagrams for explaining the concept of the manufacturing method of the steel pipe with fluororesin inner and outer circumferential surfaces lining of the present invention, respectively, and Figure 2 is the tip of the fluororesin inner and outer circumference lined steel pipe of the present invention. FIG. 3 is a diagram showing the lining process of the liner, and FIG. 4 is a diagram showing an example of a conventional fluororesin-lined steel pipe. l... Steel pipe 2... Liner 2-1
...End face 3...Sizing die 4...
・Jig 5...Flange part 6...Clearance Figure 2 A Figure 3
Claims (1)
ニングしたライニング鋼管において、鋼管の内外周面を
フッ素樹脂製ライナーにより一体にライニングしたこと
を特徴とするフッ素樹脂内外周面ライニング鋼管。 ２、外側にフランジ部を有する鋼管の外径より大きい内
径のフッ素樹脂製ライナーを成形し、成形したライナー
を加熱したサイジングダイにより鋼管の内径より小さい
外径となるよう引き抜き加工し、引き抜き加工したライ
ナーを鋼管内に挿入して加熱することにより鋼管の内側
のライニングを形成した後、鋼管端部より突出したライ
ナー端面をフレアー加工し、加工した端部を治具で固定
して鋼管の外周面に沿って移動させ、ライナー端面のフ
レアー加工部をフランジ部に固定することにより内外周
面を一体にフッ素樹脂製ライナーによりライニングした
ことを特徴とするフッ素樹脂内外周面ライニング鋼管の
製造方法。[Claims] 1. A lining steel pipe in which the inner and outer peripheral surfaces of the steel pipe are lined with a fluororesin liner, characterized in that the inner and outer peripheral surfaces of the steel pipe are integrally lined with a fluororesin liner. Lining steel pipe. 2. A fluororesin liner with an inner diameter larger than the outer diameter of the steel pipe with a flange on the outside was molded, and the molded liner was drawn using a heated sizing die so that it had an outer diameter smaller than the inner diameter of the steel pipe. After forming the inner lining of the steel pipe by inserting the liner into the steel pipe and heating it, the end surface of the liner that protrudes from the end of the steel pipe is flared, and the processed end is fixed with a jig to line the outer circumferential surface of the steel pipe. A method for manufacturing a steel pipe lined with a fluororesin inner and outer circumferential surface, characterized in that the inner and outer circumferential surfaces are integrally lined with a fluororesin liner by moving the liner along the liner and fixing the flared part of the liner end face to the flange part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1285039A JPH03147831A (en) | 1989-11-02 | 1989-11-02 | Steel pipe lined internally and externally with fluoroplastic and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1285039A JPH03147831A (en) | 1989-11-02 | 1989-11-02 | Steel pipe lined internally and externally with fluoroplastic and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03147831A true JPH03147831A (en) | 1991-06-24 |
Family
ID=17686372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1285039A Pending JPH03147831A (en) | 1989-11-02 | 1989-11-02 | Steel pipe lined internally and externally with fluoroplastic and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03147831A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013172692A (en) * | 2012-02-27 | 2013-09-05 | Samson Co Ltd | Heat sterilization device |
| CN103511780A (en) * | 2013-09-17 | 2014-01-15 | 梁招仙 | Fluorine-lined T-junction |
| KR101869381B1 (en) * | 2018-01-30 | 2018-06-29 | 주식회사 우진아이엔에스 | In-and-outside integrated lining processing method of insertion tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4914341A (en) * | 1972-03-23 | 1974-02-07 | ||
| JPS5293484A (en) * | 1976-02-03 | 1977-08-05 | Asahi Glass Co Ltd | Method of manufacture of pipe having lining on its inner surface |
| JPS5764514A (en) * | 1980-10-09 | 1982-04-19 | Tamio Abe | Lining of pipe surface and lined pipe |
| JPS62220318A (en) * | 1986-02-10 | 1987-09-28 | ブリテイツシユ ガス ピ−エルシ− | Method for lining pipe or main pipe |
-
1989
- 1989-11-02 JP JP1285039A patent/JPH03147831A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4914341A (en) * | 1972-03-23 | 1974-02-07 | ||
| JPS5293484A (en) * | 1976-02-03 | 1977-08-05 | Asahi Glass Co Ltd | Method of manufacture of pipe having lining on its inner surface |
| JPS5764514A (en) * | 1980-10-09 | 1982-04-19 | Tamio Abe | Lining of pipe surface and lined pipe |
| JPS62220318A (en) * | 1986-02-10 | 1987-09-28 | ブリテイツシユ ガス ピ−エルシ− | Method for lining pipe or main pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013172692A (en) * | 2012-02-27 | 2013-09-05 | Samson Co Ltd | Heat sterilization device |
| CN103511780A (en) * | 2013-09-17 | 2014-01-15 | 梁招仙 | Fluorine-lined T-junction |
| KR101869381B1 (en) * | 2018-01-30 | 2018-06-29 | 주식회사 우진아이엔에스 | In-and-outside integrated lining processing method of insertion tube |
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