JP2527316B2 - Tube blockage method - Google Patents

Tube blockage method

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Publication number
JP2527316B2
JP2527316B2 JP61301409A JP30140986A JP2527316B2 JP 2527316 B2 JP2527316 B2 JP 2527316B2 JP 61301409 A JP61301409 A JP 61301409A JP 30140986 A JP30140986 A JP 30140986A JP 2527316 B2 JP2527316 B2 JP 2527316B2
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pipe
sleeve
tube
plug
portion
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JPS63156998A (en
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利明 三木
定則 竹本
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ダイセル化学工業株式会社
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10Means for stopping flow from or in pipes or hoses

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は管閉塞方法に関するものである。 BACKGROUND OF THE INVENTION (FIELD OF THE INVENTION) The present invention relates to a tube closure methods.

更に詳しくはテーパ状外径を有する棒状プラグのクサビ効果による拡管作用を利用することを特徴とする管閉塞方法にに関するものである。 And more particularly to a tube closure method characterized by utilizing a tube expanding action by the wedge effect of the rod-like plug having a tapered outer diameter.

化学工業をはじめとして各種の液体や気体を取扱う場合,必ずといってよいくらい用いられるプロセス機器として熱交換器がある. When handling various liquids and gases including the chemical industry, there is a heat exchanger as the process equipment used much may always say. この熱交換器には各種の形式のものがあるが,最も一般的なものが多管式熱交換器である. Although this heat exchanger there is a variety of formats, the most common ones and-tube heat exchanger. (従来技術) この多管熱交換器の構造は第2図に示すごとく概略以下のようなものである. (Prior art) structure of the multi-tube heat exchanger is as follows schematic as shown in Figure 2. 用いる流体の流量,更に詳しく言うならば必要電熱量により各種のサイズのものが選定される. Fluid flow rate to be used, those of various sizes are selected by the required electric quantity if More particularly. 例えば,内径20〜30CM又はそれ以上,長さ30CM〜100C For example, the inner diameter 20~30CM or more, length 30CM~100C
M又はそれ以上のパイプの内部に外径10〜20mm又はそれ以上の外径を有するパイプ6−6を最密充填に近いくらい多数本並列に配列し,その多数本のパイプを両端部で支えるため,および,冷媒流体または加温流体と被冷媒流体または被加温流体との間をシールするためにエンドプレート5−5が設けられている. Pipes 6-6 having an outer diameter 10~20mm or more outer diameter inside the M or more pipes arranged in much large number of parallel near closest packing bears the number of pipes at both ends Therefore, and has an end plate 5-5 is provided to seal between the coolant fluid or heating fluid and the refrigerant fluid or the warming fluid. そしてこのエンドプレート−5−5と多数本のパイプ6−6とは通常,溶接または拡管加工により固定されており,水密的,または気密的構造になるように加工されている. And this end plate -5-5 with a number of pipes 6-6 and usually is fixed by welding or pipe expanding, and is processed to be water-tight or air-tight structure. そしてこのエンドプレートは通常,フランジ部を兼ねており,このフランジ部が蓋部にとりつけられているフランジ部とボルトおよびナットで固定されて外部と遮断されて用いられる. And this end plate is normally also serves as a flange portion, the flange portion is fixed by the flange portion and a bolt and a nut that is attached to the lid used is isolated from the outside. そして,この多数本のパイプの材料としては熱交換器の機能を効率的に発揮させるために熱伝導性の良好な銅系の金属が用いられることが多い. The good thermal conductivity copper-based metal in order to this effectively exhibit the function of the heat exchanger many as the material of the pipe is often used. ところで,冷却または加熱をするための冷媒としてはエチレングリコール等の有機化合物液体または冷水など,また,熱媒としては蒸気,温水または塩素系の有機化合物液体などが用いられる. Incidentally, as a refrigerant for cooling or heating an organic compound liquid or cold water, such as ethylene glycol, also, as the heating medium steam, such as hot water or chlorinated organic compound liquid is used. 一方,被加熱流体または被冷却流体としては分野により種々枚挙にいとまがないくらい多い. On the other hand, often much variety too numerous to mention by field as heated fluid or fluid to be cooled. これら種々の冷媒,熱媒,被加熱流体または被冷却流体は程度の差こそあるが,いずれも長期間使用した場合,熱交換器の電熱面となる多数本のパイプ表面の汚れのみならず,パイプの腐蝕が進行して用途によっては重大なトラブルを引き起こすことになる. These various refrigerants, heat transfer medium, although the heated fluid or the cooled fluid is varying degrees, if any prolonged use not only soiling of the large number of the pipe surface as the heating surface of the heat exchanger, will cause serious trouble in some applications corrosion of the pipe is in progress. この腐蝕は多数本のパイプの外側から発生する場合と内側から発生する場合がある. This corrosion may occur from the inside and occur from the outside of a number of pipes. このように,多管式熱交換器において,万一腐蝕などにより多数本のパイプのうち一部のパイプが腐蝕などにより液漏れを起こした場合の対策としては,使用年月が長いかまたは腐蝕がひどい場合は熱交換器全体を交換することもあるが,一般的には多数本のパイプのうち液漏れを起こした一部のパイプのみを新しいパイプと交換するか前記エンドプレートのところで孔を閉塞して液漏れを起したパイプのみ熱交換能力を殺して用いることが多い. Thus, in a multi-tube heat exchanger, as a countermeasure in the case where the event some of the pipe of a number of pipes due corrosion has leaked due corrosion, or use date is long or corrosion Although the case is severe also to replace the entire heat exchanger, a generally exchanges only a portion of the pipe that caused the out leakage of a large number of pipes with new pipes or holes at the said end plate it is often used to kill heat exchange capacity only pipe that caused the leakage and blockage. このようにすればたとえ一部のパイプで液漏れしても冷却または加熱をするための冷媒または熱媒と被加熱流体または被冷却流体が混合することはなく,かつ,熱交換能力をほとんど減殺せずに機器の使用年月を延長させることが可能である. Thus never even be liquid leakage in some of the pipe is mixed refrigerant or heating medium and the heated fluid or the cooled fluid for cooling or heating if and reduced little heat exchange capacity it is possible to extend the date of the product not kill. 一般的にこの様な多管式熱交換器を用いる場合は多数本のパイプの内側に被加熱流体または被冷却流体を流通させ,多数本のパイプの外側に冷却または加熱をするための冷媒または熱媒を流通させるので,閉塞したパイプにおける滞留などは実用上全く問題にはならない. Generally by flowing a heated fluid or the cooled fluid inside of a large number of pipes in the case of using such a multi-tube heat exchanger, the refrigerant or to a cooling or heating on the outside of the large number of pipes since circulating heating medium, such as retention of occluded pipe is not a practical problem at all. このように,多数本のパイプの中の一部のパイプの孔を閉塞するための従来からの具体的な方法としてはエンドプレートにおける孔の部分を溶接して塞いだり,孔に直接メクラプラグを打込むことであった。 Thus, hitting clogged by welding concrete hole portion of the end plate as conventional methods for occluding a portion of the pipe bore of a number of pipes, the Mekurapuragu directly into the hole It was to writing.

(発明が解決しようとする問題点) このように,多数本のパイプの中の一部のパイプの孔を閉塞するためエンドプレートにおける孔の部分を溶接して塞いだりメクラプラグを打込む方法では以下に述べるような欠点がある. (INVENTION Problems to be Solved point) Thus, in the method of driving the Mekurapuragu clogged by welding hole portion of the end plate for closing a portion of the pipe bore of a number of pipes below there are disadvantages as described. すなわち,溶接する方法では閉塞を完全にするため溶接部分を綺麗に洗い、場合によっては酸洗浄などもせねばならないこともある. That is, clean wash weld to complete occlusion in the process of welding, in some cases, which must be well as acid cleaning. また,溶接する場合,溶接部分だけでなくその周辺にも高熱がかかるので全体的に歪みが生じ,問題のない部分にまで漏洩が生じるようなことも起こり得る. Further, when welding, overall distortion occurs because high heat is applied to the surrounding well welded parts may also happen that such leakage to the portion having no problem arises. 一方,孔に直接メクラプラグを打込む方法では閉塞を完全にすることは可能であるが,メクラプラグを打込む際,エンドプレートに強い衝撃力がかかるため,他の正常な部分に悪影響を及ぼすことがある. On the other hand, in the method of driving the Mekurapuragu directly into the hole it is possible to complete the closure, when driving the Mekurapuragu, since the strong impact force is applied to the end plate, it may adversely affect the other normal parts is there. また,エンドプレートに傷がついたりすることもある. In addition, there is also possible to be scratched on the end plate. そこで本発明者らはこれらの問題点を解決すべく鋭意研究を行ない、遂に本発明を完成させるに至った。 Therefore, the present inventors have conducted intensive studies in order to solve these problems, which resulted in the finally completed the present invention.

(発明の構成) すなわち、本発明は 「一方の端部に鍔部を具備し、外径が鍔部を除いて長さ方向に均一であり、内径の少なくとも一部が鍔部からもう一方の端部に向かってテーパ状に狭められた構造を有するスリーブ状短管と該短管のテーパ状内径に一致するテーパ状外径を長さ方向の少なくとも一部に有する内部に空洞または空間を有していない棒状プラグを用いることを特徴とする管閉塞方法」 である. (Configuration of the Invention) That is, the present invention is provided with a flange portion on the end of the "one, outer diameter except for the flange portion is uniform in the longitudinal direction, at least a portion of the inner diameter of the other from the flange portion have a cavity or space therein having a tapered outer diameter that matches the tapered inner diameter of the sleeve-like short tube and the short tube having a structure which is narrowed in a tapered shape toward the end portion at least a portion of the length direction a tube occlusion wherein "the use of bar-shaped plug that is not. 次に本発明を詳細に説明する. Next the present invention will be described in detail. 第1図は本発明の方法に用いるスリーブ状短管とプラグを示したものであり,1−1がスリーブ状短管,2−2が棒状プラグ,3−3がエンドプレートに嵌合させた伝熱用多管の中の1本のパイプで第2図における5−5に相当する. Figure 1 is shows the sleeve-like short tube and the plug used in the method of the present invention, 1-1 sleeve-like short tube, 2-2 bar-shaped plug, 3-3 were fitted to the end plate corresponding to 5-5 in Figure 2 in one pipe in the heat transfer for a multi-tube. 4−4がエンドプレートで,第2図における5−5に相当する. 4-4 in the end plates, which corresponds to 5-5 in Figure 2. スリーブ状短管1−1に用いる材料は金属の中でも比較的塑性を有するもの,例えば,焼鈍処理を行なった銅または真鋳などの銅合金が好適である. Materials used for the sleeve-like short tube 1-1 having a relatively plasticity among metals, e.g., copper alloy such as copper or brass that was subjected to annealing treatment is preferred. 塑性を有していない金属でスリーブ状短管1−1を作製して用いるとプラグだけを打込む従来法と同じくエンドプレート4−4に衝撃力が加えられる. Impact force is applied also to the end plate 4-4 used to produce a sleeve-shaped short pipe 1-1 metal that does not have a plastic and only implanting conventional methods plug. 棒状プラグ2 The rod-shaped plug 2
−2に用いる材料はスリーブ状短管のように塑性を有していない金属の方が好ましい. The material used for the -2 towards metal having no plasticity such sleeve-shaped short pipe is preferred. このスリーブ状短管1−1と棒状プラグ2−2の材料は同じものでも異なった物でもよい. The material of the sleeve-shaped short pipe 1-1 and the rod-shaped plug 2-2 may also be different also identical. 次に,スリーブ状短管1−1の形状と大きさについて述べる. Next, we describe the shape and size of the sleeve-shaped short pipe 1-1. 長さは10mm〜30mmあれば充分である. The length is sufficient if there 10mm~30mm. 10mmより短いと作業がやり難いことと内径のテーパの度合を幅広く取ることができない不都合がある. There is short and the work is not able to take a wide range of degree of taper of the things that is difficult to do and the inner diameter inconvenience than 10mm. また,シールが不完全になることがあり,メクラ打ちの目的を達成することができない.. 反対に30mmを超えるような長さにしても余り意味はない. Further, it may seal becomes incomplete, it is impossible to achieve the object of the blind beating .. not much sense in length exceeding 30mm in the opposite. 次に,スリーブ状短管1−1の外径についてのべる. Next, we describe the outer diameter of the sleeve-shaped short pipe 1-1. 外径は鍔部を除いて長さ方向に亘ってほぼ一定で,かつ,パイプの内径より僅か細くしておく必要がある. An outer diameter substantially over the length direction except the flange portion constant and it is necessary to slightly narrower than the inner diameter of the pipe. なぜならば,この太さが太いと問題外であり,逆に, This is because, this thickness is out of the thick and the problem, on the contrary,
この太さが細すぎると拡管させる度合が大きくなり過ぎるので好ましくない. When the thickness is too thin it is not preferable because the degree to tube expansion becomes too large. なお,鍔部の外径はパイプの中に突抜けていかず,エンドプレート4−4にひっかかってくれる程度だけスリーブ全体の外径よりわずかに太ければ問題は無い. The outer diameter of the flange portion is not Ika penetrate into the pipe, if slightly Futokere than the outer diameter of only entire sleeve extent who caught the end plate 4-4 is no problem. この鍔部の外径があまり太いと隣接したパイプの孔を塞いでしまうこともあるので好ましくない. Undesirable outer diameter of the flange portion is sometimes clog the pipe hole adjacent to the too thick. したがって,鍔部の外径の太さの限界は伝熱管として用いられているパイプ3−3の外径程度である. Therefore, the thickness of the limits of the outer diameter of the flange portion is the outer diameter of about pipe 3-3 which is used as a heat transfer tube. 次に, next,
スリーブ状短管1−1の肉厚および内径について詳細に述べる. It described in detail the thickness and the inner diameter of the sleeve-shaped short pipe 1-1. 内径は鍔部からもう一方の端部に向かって長さの少なくとも一部がテーパ状に狭められた構造を有している必要がある. The inner diameter is required to have at least a portion of the length towards the other end from the flange portion is narrowed in a tapered shape structure. 少なくとも一部をテーパ状にしておく理由は 後に述べる棒状プラグ2−2を打込むことによるクサビ効果を発揮させるためである. Why keep tapered at least a portion is for exhibiting a wedge effect by driving the bar-shaped plug 2-2 described later. このテーパ状構造の度合は1/5〜1/20が好ましい. The degree of the taper-like structure is preferably 1 / 5-1 / 20. テーパ状構造の度合が1/5以上だと棒状プラグ2−2 The rod-shaped plug that it degree of taper-like structure is 1/5 or more 2-2
を打込む際に打込むための力を大きくする必要があることとその際に受ける衝撃力が大きくなり好ましくない. It is necessary to increase the force for driving in driving the the impact forces encountered during its large undesirably. また,打込んだ棒状プラグ2−2が振動などで抜けてしまう恐れもある. In addition, there is also a possibility that the bar-shaped plug 2-2 fall out in such vibration that implanted. 一方,テーパ状構造の度合が1/20以下だと棒状プラグを打込んでもクサビ効果があまり発揮されず,したがってあまり拡管されないことになる. On the other hand, so that the degree of taper-like structure is not so much even wedge effect exerted by implanting a rod plugs that it 1/20 or less, thus not significantly expanded pipe. 但し,このテーパ部は部品の加工のし易さなどを考慮すると短管の全体に亘って均一に付予させておくのが好ましい. However, the tapered portion is preferably kept evenly Tsuke予 throughout the consideration of the short tube and ease of processing of the components. スリーブ状短管1−1の肉厚は平均して1〜2mm程度が好ましい. About 1~2mm average thickness of the sleeve-shaped short pipe 1-1 is preferred. 肉厚が1mm以下だと拡管された際,拡管の度合が大きいとスリーブ状短管1−1の1部がちぎれることもあり,好ましくない. Thickness when is expanded pipe that it 1mm or less, also 1 part torn that the degree of tube expansion is large sleeve-like short tube 1-1, is not preferred. 逆に肉圧が2mm以上だと拡管されにくく,棒状プラグ2−2を打込んでもクサビ効果があまり発揮されない. Conversely meat pressure is less likely to be expanded pipe that it more than 2mm, the wedge effect is not so much exhibit also implanted a rod-like plug 2-2. このことからもスリーブ状短管1−1の長さは前述した程度に押さえる必要がある. Length of the sleeve-shaped short pipe 1-1 This also has to suppress the extent described above. なぜならば,あまりこの長さが長すぎると打込む際, This is because, when implanted is too long so this length,
スリーブ状短管の内面1−1と棒状プラグ2−2の外面との間の摩擦抵抗が大きくなり過ぎるからである. Frictional resistance between the inner surface 1-1 and the outer surface of the rod-like plug 2-2 of the sleeve-shaped short pipe is because too large. 次に,棒状プラグ2−2の形状およびその外径について詳細に述べる. Next, he described in detail the shape and outer diameter thereof of the rod-shaped plug 2-2. 先ず,長さはスリーブ状短管1−1の長さとほとんど同じにしておけば問題は無い. First, there is no problem if the length is in close analogy to the length of the sleeve-shaped short pipe 1-1. 前述したように,スリーブ状短管1−1の内面は内径の少なくとも一部が鍔部からもう一方の端部に向かってテーパ状に狭められているので,棒状プラグ2−2の外径の最大部分がスリーブ状短管1−1の内径の最大部分よりやや細くなっていれば一応の目的を達成させることができる. As described above, the inner surface of the sleeve-shaped short pipe 1-1 at least a part of the inner diameter is narrowed in a tapered shape toward the other end from the flange portion, the outer diameter of the rod-like plug 2-2 largest part can be achieved prima facie objective if slightly narrower than the largest portion of the inner diameter of the sleeve-shaped short pipe 1-1. しかしながら,最も望ましい形状はスリーブ状短管1 However, the most desirable shape sleeve-like short tube 1
−1の内面に付与されたテーパ部分とおなじテーパの度合いを有し,かつ,棒状プラグ2−2がスリーブ状短管1−1より1/2〜1/5突び出す程度が好適である. It has a degree of the same taper and granted tapered portion on the inner surface of -1, and it is preferable extent that rod-like plug 2-2 issues 1 / 2-1 / 5 collision beauty than the sleeve-like short tube 1-1 . 棒状プラグ2−2の外面にスリーブ状短管1−1の内面に付与されたテーパと同じ度合いのテーパを付予する理由は拡管の度合いがスリーブ状短管1−1の長さ方向に亘って均一になるようにするためである. The degree reason for Tsuke予 the taper of the tube expansion of the same degree as the outer surface taper is imparted to the inner surface of the sleeve-shaped short pipe 1-1 bar-shaped plug 2-2 over the length direction of the sleeve-shaped short pipe 1-1 Te is to be balanced. このようにすれば冷媒流体または加温流体と被冷媒流体または被加温流体との間のシールを完全にすることが可能であり,また周囲に与える衝撃も比較的緩和されるので好都合である. In this way it is possible to complete the seal between the coolant fluid or heating fluid and the refrigerant fluid or the warming fluid, also is advantageous because the impact is also relatively mild give around . 突び出しの程度が1/2より多いと棒状プラグ2−2を打込む度合いが大きくなり,必然的に拡管の度合いが大きくなるのであまり好ましくはない. The extent of the collision beauty out the degree increases implanted with more than half a rod-like plug 2-2, not less preferred because increases the degree of inevitably pipe expansion. また,棒状プラグ2−2を打込むのに大きな力を必要とするので,あまり好ましくはない. Moreover, because it requires a large force to drive the rod-like plug 2-2, it is less preferred. 次にスリーブ状短管1−1の内面および棒状プラグ2 Then the inner and rod-shaped plug 2 of the sleeve-shaped short pipe 1-1
−2の外面の加工時の仕上げ精度について述べる. -2 describes finishing accuracy during machining of the outer surface of the. これらの仕上げ精度は▽▽▽(JISB 0031の付属書に規定する仕上げ記号)程度にしておいたほうが好適である. These finish precision is suitably better had been on the degree (finishing symbol prescribed in Annex of JISB 0031) ▽▽▽. その理由は仕上げ精度が上記より粗いとスリーブ状短管1−1の内面と棒状プラグ2−2の外面との間に作用する摩擦が大きくなることとシール性に影響するからである. The reason is because the finishing accuracy is affected to the sealability friction exerted increases between the inner and outer surfaces of the bar-shaped plug 2-2 of the sleeve-shaped short pipe 1-1 and coarser than the. 摩擦が大きくなるということは棒状プラグ2−2をスリーブ状短管1−1に打込む際に要する力が大きくなるだけでなく,周囲に衝撃を与えるのであまり好ましくはない. That friction is increased not only the force required in driving the bar-shaped plug 2-2 sleeved short pipe 1-1 becomes larger, are less preferred because an impact on the surroundings. これらスリーブ状短管1−1および棒状プラグ2−2 These sleeve-like short pipe 1-1 and the rod-like plug 2-2
を作製するには鍛造による方法でもよいし,旋盤などによる切削加工による方法でもよい. May be a method by forging to produce the a, it may be a method by cutting using such a lathe.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

第1図は本発明の方法に用いるスリーブ状短管と棒状プラグを組合わせた概略図であり,1−1がスリーブ状短管,2−2が棒状プラグ,3−3が伝熱用多管の中の1本のパイプ,4−4がエンドプレートである. Figure 1 is a schematic view of a combination of the sleeve-like short tube and the rod-shaped plug for use in the method of the present invention, 1-1 sleeve-like short tube, 2-2 bar-shaped plug, 3-3 multi for heat transfer one pipe in the pipe, 4-4 is an end plate. 第2図は一般的な多管式熱交換器の断面図である。 Figure 2 is a cross-sectional view of a typical shell and tube heat exchanger.

Claims (1)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】一方の端部に鍔部を具備し、外径が鍔部を除いて長さ方向に均一であり、内径の少なくとも一部が鍔部からもう一方の端部に向かってテーパ状に狭められた構造を有するスリーブ状短管と該短管のテーパ状内径に一致するテーパ状外径を長さ方向の少なくとも一部に有する内部に空洞または空間を有していない棒状プラグを用いることを特徴とする管閉塞方法。 [Claim 1] comprising a flange portion at one end, an outer diameter except for the flange portion is uniform in the longitudinal direction, at least a portion of the inner diameter toward the other end from the flange portion tapers the rod-like plug having no internal cavity or space having at least a portion of the tapered outer diameter length direction corresponding to the tapered inner diameter of the sleeve-like short tube and the short tube having a narrowed structure Jo tube obstruction wherein the use.
JP61301409A 1986-12-19 1986-12-19 Tube blockage method Expired - Lifetime JP2527316B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61301409A JP2527316B2 (en) 1986-12-19 1986-12-19 Tube blockage method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61301409A JP2527316B2 (en) 1986-12-19 1986-12-19 Tube blockage method

Publications (2)

Publication Number Publication Date
JPS63156998A JPS63156998A (en) 1988-06-30
JP2527316B2 true JP2527316B2 (en) 1996-08-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP61301409A Expired - Lifetime JP2527316B2 (en) 1986-12-19 1986-12-19 Tube blockage method

Country Status (1)

Country Link
JP (1) JP2527316B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0503134B1 (en) 2004-08-02 2018-03-20 Rohm And Haas Company Method of forming a laminated tube sheet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60200096A (en) * 1984-03-22 1985-10-09 Babcock Hitachi Kk Method of using blank plug for repair of heat transfer pipe of heat exchanger

Also Published As

Publication number Publication date
JPS63156998A (en) 1988-06-30

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