JP2635358B2 - Manufacturing method of inner corrosion resistant iron tube - Google Patents
Manufacturing method of inner corrosion resistant iron tubeInfo
- Publication number
- JP2635358B2 JP2635358B2 JP8574588A JP8574588A JP2635358B2 JP 2635358 B2 JP2635358 B2 JP 2635358B2 JP 8574588 A JP8574588 A JP 8574588A JP 8574588 A JP8574588 A JP 8574588A JP 2635358 B2 JP2635358 B2 JP 2635358B2
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- steel foil
- iron tube
- elastic body
- pipe
- 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 - Fee Related
Links
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は水道管、食品輸送管および薬品輸送管などに
使用される内面耐食鉄管の製造方法に関するものであ
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an inner corrosion-resistant iron pipe used for a water pipe, a food transport pipe, a chemical transport pipe, and the like.
従来の技術 従来、内面耐食管として、鋼管の内面にステンレス材
を爆圧着などで張り付けたステンレスクラツド鋼管など
が市販されている。また、配管時など、その接合部を溶
接して連結していた。2. Description of the Related Art Conventionally, stainless steel clad steel pipes in which a stainless steel material is adhered to the inner surface of a steel pipe by explosion bonding or the like are commercially available as inner corrosion-resistant pipes. In addition, the joints are welded and connected at the time of piping or the like.
発明が解決しようとする課題 上記のような従来のステンレスクラツド鋼管は、ステ
ンレスの圧着面の平滑度および清浄度などを非常に厳し
く管理する必要があり、しかも、製造設備が大がかりな
ものとなり、製造工程も複雑となる結果、コストが高く
なるという問題を有していた。さらに、配管時など、接
合を溶接で行う場合には、ステンレスの溶接は非常に難
かしく熟練を要するとともに、その接合部内面の耐食性
が劣るという問題を有していた。Problems to be Solved by the Invention The conventional stainless clad steel pipe as described above requires very strict control of the smoothness and cleanliness of the crimped surface of stainless steel, and the production equipment becomes large, As a result, the manufacturing process becomes complicated, resulting in an increase in cost. Furthermore, when joining is performed by welding, such as at the time of piping, welding of stainless steel is very difficult and requires skill, and there is a problem that the corrosion resistance of the inner surface of the joint is inferior.
本発明は上記従来の問題を解決するもので、ステンレ
スの圧着面の平滑度および清浄度を厳しく管理する必要
がなく、しかも、製造設備も簡便で低コストで製造する
ことができるとともに配管工程も簡便で、接合部の耐食
性も良好な内面耐食鉄管の製造方法を提供することを目
的とするものである。The present invention solves the above-mentioned conventional problems, there is no need to strictly control the smoothness and cleanliness of the crimped surface of stainless steel, and the manufacturing equipment can be manufactured simply and at low cost, and the piping process can be performed. It is an object of the present invention to provide a method for manufacturing an internal corrosion-resistant iron pipe that is simple and has good corrosion resistance at a joint.
課題を解決するための手段 上記課題を解決するために、本発明の内面耐食鉄管の
製造方法は、ステンレス箔を周方向ひとつ割りの円筒状
に形成するとともに、その分割部の一端側を折り返し構
造とし、かつ分割部の他端側を前記折り返し部の中で周
方向にスライド可能として、拡管可能なように製缶し、
次に、継手結合可能な鉄管の内部に、この鉄管の内面と
の間に接着剤を介して、前記製缶されたステンレス箔を
挿入し、その後、圧縮力を受けてバレリング現象を起こ
した弾性体を前記製缶されたステンレス箔の内部に軸心
方向に通し、この弾性体により前記製缶されたステンレ
ス箔を拡管させて鉄管の内面に圧着することを特徴とす
るものである。Means for Solving the Problems In order to solve the above problems, a method for producing an inner surface corrosion-resistant iron tube of the present invention comprises forming a stainless steel foil into a cylindrical shape divided in a circumferential direction, and folding one end of the divided portion. And, the other end side of the divided portion is slidable in the circumferential direction in the folded portion, and canned so as to be expandable,
Next, the can-made stainless steel foil is inserted into the inside of the iron tube capable of being jointed with an adhesive between the inner surface of the iron tube and the inner surface of the iron tube. The body is passed through the interior of the can-made stainless steel foil in the axial direction, and the elastic body is used to expand the can-made stainless steel foil and press-fit it to the inner surface of the iron pipe.
さらに、圧着装置は、内面耐食鉄管を製造するため
に、鉄管の内面との間に接着剤を介してこの鉄管の内部
に挿入される製缶されたステンレス箔のさらに内部に挿
入される弾性体と、前記弾性体に圧縮力を与えてバレリ
ング現象を起こさせ、この弾性体を前記製缶されたステ
ンレス箔の内面に押圧させる圧縮手段と、前記圧縮手段
にて圧縮力を発生させるようにこの圧縮手段を駆動する
駆動手段とを有し、かつ前記弾性体を前記製缶されたス
テンレス箔の内部で軸心方向に移動可能とされて、前記
製缶されたステンレス箔を鉄管内面に圧着可能なように
構成したことを特徴とするものである。Further, in order to manufacture an inner surface corrosion-resistant iron tube, the crimping device further includes an elastic body inserted further inside the can-made stainless steel foil inserted into the inside of the iron tube via an adhesive between the inner surface of the iron tube and the inner surface of the iron tube. A compressing means for applying a compressive force to the elastic body to cause a barreling phenomenon, and pressing the elastic body against the inner surface of the canned stainless steel foil, and a compressing means for generating a compressive force by the compressing means. And a driving means for driving a compression means, and the elastic body can be moved in the axial direction inside the canned stainless steel foil, and the canned stainless steel foil can be crimped to the inner surface of the iron pipe. It is characterized by having such a configuration.
作用 上記方法により、ステンレス箔は管状で拡管可能に簡
単に製缶でき、この製缶されたステンレス箔は鉄管に挿
入されて、その内面を圧着装置の弾性体のバレリング現
象による均等なふくれの圧力により機械的に拡管して、
鉄管の内面に接着剤を介して容易に均等に圧着させるこ
とができる。また、従来のようにステンレス圧着面の平
滑度および清浄度を厳しく管理する必要もなく、しか
も、製造設備も簡便で、内面耐食鉄管を低コストで製造
することができるとともに、ステンレス箔の製缶結合部
の水密性も完全であり、さらに、配管工事についても従
来のように溶接ではなく、継手接合のため、簡便で、そ
の耐食性も極めて優れている。According to the above method, the stainless steel foil can be easily made into a tubular and expandable can, and this made stainless steel foil is inserted into an iron tube, and the inner surface thereof is pressed evenly by the barreling phenomenon of the elastic body of the crimping device. Mechanically expanded by
It can be easily and evenly pressed on the inner surface of the iron tube via an adhesive. In addition, there is no need to strictly control the smoothness and cleanliness of the stainless steel crimping surface as in the past, and the manufacturing equipment is simple, and the inner corrosion-resistant iron tube can be manufactured at low cost. The watertightness of the joints is perfect, and the piping work is simple, because of joining instead of welding as in the past, and the corrosion resistance is extremely excellent.
実施例 以下、本発明の一実施例について図面を参照しながら
説明する。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
第１図〜第３図は本発明の一実施例を示す内面耐食鉄
管の製造方法を示す図であり、第１図は製缶されたステ
ンレス箔を鋳鉄管に挿入した状態を示す斜視図、第２図
は第１図のＡ部（製缶結合部）拡大図、第３図は圧着装
置による圧着方法を説明する内面耐食鉄管および圧着装
置の概略従断面図である。1 to 3 are views showing a method for manufacturing an inner corrosion-resistant iron pipe showing one embodiment of the present invention, and FIG. 1 is a perspective view showing a state where canned stainless steel foil is inserted into a cast iron pipe. FIG. 2 is an enlarged view of part A (canned part) of FIG. 1, and FIG. 3 is a schematic sectional view of an inner corrosion-resistant iron pipe and a crimping device for explaining a crimping method by a crimping device.
第１図および第２図において、１はステンレス（SUS3
04）の筒をたとえば外径75mm、長さ4mに製缶されたステ
ンレス箔製缶パイプである。このステンレス箔製缶パイ
プ１は、周方向ひとつ割りとして分割部につなぎ目が形
成され、そのつなぎ目の一端２をたとえば折り込み巾10
mmに折り返して折り返し部３をつくり、他端４をこの製
缶折り返し部３の中にはさみ込んで周方向にスライド可
能として、拡管可能なように製缶結合部５を構成してい
る。1 and 2, reference numeral 1 denotes stainless steel (SUS3
This is a stainless steel can pipe made of a cylinder 04) with an outer diameter of 75 mm and a length of 4 m, for example. In the stainless steel can pipe 1, a joint is formed at a divided portion in a circumferential direction, and one end 2 of the joint is, for example, a folded width of 10 mm.
The folded portion 3 is formed by folding back to mm, and the other end 4 is inserted into the folded portion 3 to be slidable in the circumferential direction.
６は、その内面に接着剤が塗布され、たとえば内径78
mm、長さ4mの鋳鉄管である。この鋳鉄管６は受口７と挿
口８を有し、継手結合可能となつている。6 has an inner surface coated with an adhesive,
mm, 4m long cast iron tube. The cast iron tube 6 has a receiving port 7 and an insertion port 8, and can be connected to a joint.
次に、第３図に示す圧着装置について説明する。 Next, the crimping device shown in FIG. 3 will be described.
第３図において、油圧シリンダ９とピストン10で駆動
手段が構成される。また、このピストン10はシヤフト部
11に連結されて、このシヤフト部11の端部に設けられた
ツバ部12と固定筒13で圧縮手段が構成されている。さら
に、このツバ部12と固定筒13の間にゴム筒14を介在させ
て、圧着部15を構成し、油圧シリンダ９に油圧をかけて
ピストン10を動かし、シヤフト部11を介してツバ部12と
固定筒13でゴム筒14を圧縮するように圧着装置16が構成
されている。この圧縮時、ゴム筒14は座屈して、破線に
示されるように、バレリング現象で、均等なたる型とな
つてふくれ、これにより、ステンレス箔製缶パイプ１に
内圧をかけることができる。In FIG. 3, the driving means is constituted by the hydraulic cylinder 9 and the piston 10. Also, this piston 10 is
Compression means is formed by a flange 12 and a fixed cylinder 13 which are connected to the shaft 11 and provided at an end of the shaft 11. Further, a rubber tube 14 is interposed between the flange portion 12 and the fixed cylinder 13 to form a crimping portion 15, a hydraulic pressure is applied to the hydraulic cylinder 9 to move the piston 10, and the flange portion 12 is moved through the shaft portion 11. The pressure bonding device 16 is configured to compress the rubber cylinder 14 with the fixed cylinder 13. During this compression, the rubber cylinder 14 buckles and, as indicated by the broken line, bulges into a uniform barrel shape due to a barreling phenomenon, whereby internal pressure can be applied to the stainless steel foil can pipe 1.
以上のような構成により、以下、内面耐食鉄管の製造
方法について説明する。Hereinafter, a method of manufacturing the inner surface corrosion-resistant iron pipe having the above configuration will be described.
第１図に示されるようにまず、拡管可能な結合部５を
有する筒状のステンレス箔製缶パイプ１を形成する。こ
のステンレス箔製缶パイプ１を、鋳鉄管６に挿入する。
この鋳鉄管６の内面には第４図に示されるように接着剤
層17と粉体塗装層18があらかじめ塗布などにより形成さ
れている。接着剤層17は鋳鉄管６とステンレス箔製缶パ
イプ１の間に介在し、粉体塗装層18は鋳鉄管６の受口７
の内面と、挿口８の内外面とに設けられて、接着剤層17
と粉体塗装層18とのつなぎ目をすき間なく形成してい
る。As shown in FIG. 1, first, a tubular stainless steel foil can pipe 1 having a joint portion 5 that can be expanded is formed. The stainless steel foil can pipe 1 is inserted into a cast iron pipe 6.
As shown in FIG. 4, an adhesive layer 17 and a powder coating layer 18 are previously formed on the inner surface of the cast iron tube 6 by coating or the like. The adhesive layer 17 is interposed between the cast iron pipe 6 and the stainless steel can pipe 1, and the powder coating layer 18 is the receiving port 7 of the cast iron pipe 6.
And the adhesive layer 17 provided on the inner surface of the
And the powder coating layer 18 forms a joint without any gap.
次に、第３図に示すように、圧着装置16の圧着部15を
鋳鉄管６に挿入したステンレス箔製缶パイプ１の内面
に、さらに挿入して圧着装置16の油圧シリンダ９にたと
えば５トンの荷重で油圧をかけ、ピストン10に連結され
たシヤフト部11を矢印19の引き方向に作動させる。これ
により、圧着部15のゴム筒14をシヤフト部11のツバ部12
と固定筒13の間で圧縮し、この圧縮されたゴム筒14はた
る状にふくれてステンレス箔製缶パイプ１の内面を押圧
する。この圧力により、ステンレス箔製缶パイプ１のつ
なぎ目の折り返し部３と他端４とがスライドしてステン
レス箔製缶パイプ１が拡管する。その後、この圧縮力を
受けてバレリング現象を起こしてふくれたゴム筒14をス
テンレス箔製缶パイプ１の内面に軸心方向に通し、この
ゴム筒14の押圧力によりステンレス箔製缶パイプ１を全
長にわたり拡管させて、鋳鉄管６の内面に接着剤を介し
て圧着する。すなわち、ステンレス箔自体は伸びが小さ
いため、拡管時、ステンレス箔製缶パイプ１の製缶結合
部５で、その伸びを吸収して容易に圧着できるわけであ
る。Next, as shown in FIG. 3, the crimping portion 15 of the crimping device 16 is further inserted into the inner surface of the stainless steel can pipe 1 inserted into the cast iron pipe 6, and 5 tons are inserted into the hydraulic cylinder 9 of the crimping device 16. The hydraulic pressure is applied by the load of (1), and the shaft portion 11 connected to the piston 10 is operated in the pulling direction of the arrow 19. As a result, the rubber cylinder 14 of the crimping part 15 is
The compressed rubber cylinder 14 is swollen in a barrel shape and presses the inner surface of the stainless steel can pipe 1. Due to this pressure, the folded part 3 and the other end 4 of the joint of the stainless steel can pipe 1 slide and the stainless steel can pipe 1 expands. Thereafter, the rubber cylinder 14 bulging due to this compressive force and causing a barreling phenomenon is passed through the inner surface of the stainless steel can pipe 1 in the axial direction. And pressure-bonded to the inner surface of the cast iron pipe 6 via an adhesive. That is, since the stainless steel foil itself has a small elongation, when the tube is expanded, the elongation can be absorbed and easily pressed by the can connection part 5 of the stainless steel can pipe 1.
以上により、第４図に示すような内面耐食鉄管が得ら
れ、このステンレス箔製缶パイプ１の結合部の水圧テス
トを5Kg/cm2×24時間の条件で実施したが漏れなど全く
なく、水密性に関して良好であつた。As a result, an inner corrosion-resistant iron pipe as shown in FIG. 4 was obtained. A water pressure test was performed on the joint portion of the stainless steel can pipe 1 under the conditions of 5 kg / cm 2 × 24 hours. It was good in terms of properties.
発明の効果 以上のように本発明によれば、管状のステンレス箔を
その製缶結合部が拡管可能なように製缶し、この製缶さ
れたステンレス箔を、継手結合可能な鉄管の内面に接着
剤を介して挿入し、この製缶されたステンレス箔の内部
に軸心方向に通される弾性材のバレリング現象による均
等な圧力で製缶されたステンレス箔を鉄管に圧着するた
め、従来のような圧着面における清浄度などの厳しい管
理が不要となり、製造設備も簡便で、しかも、低コスト
で内面耐食鉄管を製造することができるとともに製缶結
合部の水密性も完全であり、さらに、継手接合であるた
め配管工事も簡便で、従来のような溶接によるものでは
ないことから接合部の耐食性も極めて優れている。Advantageous Effects of the Invention As described above, according to the present invention, a tubular stainless steel foil is made into a can so that the canned joint thereof can be expanded, and the canned stainless steel foil is applied to the inner surface of an iron tube to which a joint can be joined. To insert the stainless steel foil into the iron pipe with uniform pressure by the uniform pressure due to the barreling phenomenon of the elastic material that passes through the inside of this can made stainless steel foil in the axial direction by inserting it through the adhesive, the conventional Strict control such as cleanliness on the crimping surface is not required, manufacturing equipment is simple, and it is possible to manufacture the inner surface corrosion-resistant iron tube at low cost, and the watertightness of the canned joint is perfect. Since the joints are joints, the piping work is also simple, and the joints are extremely excellent in corrosion resistance because they are not based on conventional welding.
第１図〜第３図は本発明の一実施例を示す内面耐食鉄管
の製造方法を示し、第１図は製缶されたステンレス箔を
鋳鉄管に挿入した状態を示す斜視図、第２図は第１図の
Ａ部拡大図、第３図は圧着装置による圧着方法を説明す
る内面耐食鉄管および圧着装置の概略縦断面図、第４図
は同内面耐食鉄管の完成状態の一例を示す縦断面図であ
る。 １……ステンレス箔製缶パイプ、２……つなぎ目の一
端、３……折り返し部、４……つなぎ目の他端、５……
製缶結合部、６……鋳鉄管、７……受口、８……挿口、
９……油圧シリンダ、10……ピストン、11……シヤフト
部、12……ツバ部、13……固定筒、14……ゴム筒、15…
…圧着部、16……圧着装置、17……接着剤層。1 to 3 show a method of manufacturing an inner corrosion-resistant iron tube according to an embodiment of the present invention. FIG. 1 is a perspective view showing a state in which a canned stainless steel foil is inserted into a cast iron tube. 1 is an enlarged view of a portion A in FIG. 1, FIG. 3 is a schematic longitudinal sectional view of an inner corrosion-resistant iron pipe and a crimping apparatus for explaining a crimping method by a crimping apparatus, and FIG. 4 is a longitudinal section showing an example of a completed state of the inner corrosion-resistant iron pipe. FIG. 1 ... stainless steel can pipe, 2 ... one end of the joint, 3 ... folded part, 4 ... the other end of the joint, 5 ...
Can-made joint, 6 ... cast iron tube, 7 ... receptacle, 8 ... insert,
9: Hydraulic cylinder, 10: Piston, 11: Shaft, 12: Collar, 13: Fixed cylinder, 14: Rubber cylinder, 15
... Crimping part, 16 ... Crimping device, 17 ... Adhesive layer.
Claims (2)
に形成するとともに、その分割部の一端側を折り返し構
造とし、かつ分割部の他端側を前記折り返し部の中で周
方向にスライド可能として、拡管可能なように製缶し、
次に、継手結合可能な鉄管の内部に、この鉄管の内面と
の間に接着剤を介して、前記製缶されたステンレス箔を
挿入し、その後、圧縮力を受けてバレリング現象を起こ
した弾性体を前記製缶されたステンレス箔の内部に軸心
方向に通し、この弾性体により前記製缶されたステンレ
ス箔を拡管させて鉄管の内面に圧着することを特徴とす
る内面耐食鉄管の製造方法。1. A stainless steel foil is formed into a cylindrical shape divided in a circumferential direction and one end of the divided portion has a folded structure, and the other end of the divided portion is slidable in the circumferential direction in the folded portion. As a can that can be expanded,
Next, the can-made stainless steel foil is inserted into the inside of the iron tube capable of being jointed with an adhesive between the inner surface of the iron tube and the inner surface of the iron tube. A method of manufacturing an inner corrosion-resistant iron tube, comprising: passing a body in the axial direction through the can-made stainless steel foil, expanding the can-made stainless steel foil by this elastic body, and pressing the expanded stainless steel foil against the inner surface of the iron tube. .
管の内部に挿入される製缶されたステンレス箔のさらに
内部に挿入される弾性体と、前記弾性体に圧縮力を与え
てバレリング現象を起こさせ、この弾性体を前記製缶さ
れたステンレス箔の内面に押圧させる圧縮手段と、前記
圧縮手段にて圧縮力を発生させるようにこの圧縮手段を
駆動する駆動手段とを有し、かつ前記弾性体を前記製缶
されたステンレス箔の内部で軸心方向に移動可能とされ
て、前記製缶されたステンレス箔を鉄管内面に圧着可能
なように構成したことを特徴とする請求項１に記載の方
法を実施するための圧着装置。2. An elastic body inserted into a canned stainless steel foil inserted into the iron tube via an adhesive between the inner surface of the iron tube and an elastic body, and a compressive force is applied to the elastic body. A compression means for causing the elastic body to press against the inner surface of the canned stainless steel foil, and a driving means for driving the compression means so as to generate a compression force by the compression means. The elastic body is configured to be movable in the axial direction inside the canned stainless steel foil so that the canned stainless steel foil can be press-bonded to the inner surface of the iron pipe. A crimping device for performing the method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8574588A JP2635358B2 (en) | 1988-04-07 | 1988-04-07 | Manufacturing method of inner corrosion resistant iron tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8574588A JP2635358B2 (en) | 1988-04-07 | 1988-04-07 | Manufacturing method of inner corrosion resistant iron tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01258825A JPH01258825A (en) | 1989-10-16 |
| JP2635358B2 true JP2635358B2 (en) | 1997-07-30 |
Family
ID=13867383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8574588A Expired - Fee Related JP2635358B2 (en) | 1988-04-07 | 1988-04-07 | Manufacturing method of inner corrosion resistant iron tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2635358B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101870297B1 (en) * | 2017-11-13 | 2018-06-22 | 방만혁 | Composite pipe consisting of stainless steel pipe, steel pipe and anti-corrosion layer |
| WO2018230972A1 (en) * | 2017-06-16 | 2018-12-20 | 방만혁 | Composite pipe comprising stainless steel pipe, steel pipe, and anti-corrosion layer, and manufacturing method therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2807477B1 (en) * | 2000-04-06 | 2002-07-12 | Cit Alcatel | VACUUM PUMP COOLING SYSTEM, AND METHOD FOR THE PRODUCTION THEREOF |
-
1988
- 1988-04-07 JP JP8574588A patent/JP2635358B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018230972A1 (en) * | 2017-06-16 | 2018-12-20 | 방만혁 | Composite pipe comprising stainless steel pipe, steel pipe, and anti-corrosion layer, and manufacturing method therefor |
| KR101870297B1 (en) * | 2017-11-13 | 2018-06-22 | 방만혁 | Composite pipe consisting of stainless steel pipe, steel pipe and anti-corrosion layer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01258825A (en) | 1989-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI91668C (en) | Clamping fitting | |
| US5189790A (en) | Method of fabricating a double walled pipe elbow | |
| JP4439951B2 (en) | Method for forming a joint between a corrugated tube and a connecting piece | |
| AU722908B2 (en) | A method of joining lined pipes | |
| US5738385A (en) | Device for joining the end of a helically corrugated metal tube to another body | |
| US4541659A (en) | Permanently sealed threadless joint | |
| US3822464A (en) | Method of joining a tube to a roll forged sheet | |
| US3794364A (en) | Conduit end connection | |
| JP2635358B2 (en) | Manufacturing method of inner corrosion resistant iron tube | |
| KR102301514B1 (en) | pipe connecting structure | |
| CN210733319U (en) | Heat bonding anchor clamps that have lining fire hose | |
| US5392626A (en) | Flexible hydraulic expansion mandrel | |
| JPS60145303A (en) | Manufacture of powder metallurgical product | |
| EP0950460B1 (en) | Method for the production of a housing of a silencer, and such a housing | |
| JPS6357129B2 (en) | ||
| US4183558A (en) | Method for welding by pressure one or more pipes to a plate in one process | |
| USRE27906E (en) | Reinforced flexible connector | |
| JPS5853507Y2 (en) | pipe joint | |
| HUT74375A (en) | Process for installing a conduit pipe system and device for unreleasable connection | |
| JP2006212693A (en) | Ultrasonic joining method, ultrasonic joining device and joined pipe subjected to ultrasonic joining | |
| JPH01202325A (en) | Connecting method for metal tube | |
| DE19860321C1 (en) | Method of making pipe coupling involves welding connector onto pipe and attaching spacer between pipe and lining | |
| HU188850B (en) | Method for connecting nozzle pipes | |
| JPS6076290A (en) | Production of clad steel pipe | |
| JPS5858928A (en) | Double-ply pipe and its manufacture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |