JPH0557047B2 - - Google Patents
Info
- Publication number
- JPH0557047B2 JPH0557047B2 JP17783790A JP17783790A JPH0557047B2 JP H0557047 B2 JPH0557047 B2 JP H0557047B2 JP 17783790 A JP17783790 A JP 17783790A JP 17783790 A JP17783790 A JP 17783790A JP H0557047 B2 JPH0557047 B2 JP H0557047B2
- Authority
- JP
- Japan
- Prior art keywords
- reduced diameter
- diameter portion
- tip
- reinforcing ring
- ring
- 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 - Lifetime
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 69
- 238000000034 method Methods 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 22
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 description 11
- 239000012530 fluid Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、金属パイプのねじ付縮径端部を補強
するための構造と、同端部を補強する方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for reinforcing a reduced diameter threaded end of a metal pipe and a method for reinforcing the end.
［従来の技術］
従来、スプリンクラー用の巻出し配管のような
高い流体圧力の加わる配管に用いられる金属パイ
プの端部内面に雌ねじを具備させ、その雌ねじを
利用して他の金属パイプやスプリンクラーヘツド
などを接続することができるようにする場合、金
属パイプの端部にスウエージングなどの加工を施
して縮径と厚肉化とを行い、それにより形成され
た縮径部の内面に雌ねじを形成することがある。[Prior Art] Conventionally, a metal pipe used for piping to which high fluid pressure is applied, such as an unrolling pipe for a sprinkler, is provided with a female thread on the inner surface of the end, and the female thread is used to connect other metal pipes or sprinkler heads. When connecting a metal pipe, etc., the end of the metal pipe is processed such as swaging to reduce the diameter and increase the thickness, and then a female thread is formed on the inner surface of the reduced diameter part. There are things to do.
［発明が解決しようとする課題］
ところが、上記縮径部は雌ねじの形成によつて
幾分か肉薄になり、場合によつてはその縮径部に
要求される強度が充足されなくなることがあると
いう問題があつた。このような強度不足の縮径部
がそのまま別の金属パイプやスプリンクラーヘツ
ドとの接続に利用されると、流体圧力による変形
などを生じやすくなり好ましくない。[Problems to be Solved by the Invention] However, the reduced diameter portion becomes somewhat thin due to the formation of the female thread, and in some cases, the strength required for the reduced diameter portion may not be sufficient. There was a problem. If such a reduced diameter portion with insufficient strength is used as it is for connection to another metal pipe or sprinkler head, it is undesirable because it is likely to be deformed due to fluid pressure.
本発明は以上の事情に鑑みてなされたもので、
金属パイプに具備された上記縮径部を確実に補強
することのできる構造と、そのような構造を得る
ための補強方法とを提供することを目的とする。 The present invention was made in view of the above circumstances, and
It is an object of the present invention to provide a structure capable of reliably reinforcing the reduced diameter portion provided on a metal pipe, and a reinforcing method for obtaining such a structure.
［課題を解決するための手段］
第１番目の発明によるパイプのねじ付縮径端部
の補強構造は、金属パイプの端部に形成された縮
径部に補強リングが外嵌合状に装着され、その補
強リングから突き出された上記縮径部の先端にそ
の先端を圧潰することにより形成されたリング状
の膨径部が具備されていると共に、上記縮径部の
内面に雌ねじが形成されているものである。[Means for Solving the Problems] In the reinforcing structure for the threaded reduced diameter end of a pipe according to the first invention, a reinforcing ring is fitted externally to the reduced diameter portion formed at the end of the metal pipe. and a ring-shaped expanded diameter portion formed by crushing the tip at the tip of the reduced diameter portion protruding from the reinforcing ring, and a female thread is formed on the inner surface of the reduced diameter portion. It is something that
第２番目の発明によるパイプのねじ付縮径端部
の補強方法は、金属パイプの端部に形成された縮
径部に補強リングを外嵌着することによりその補
強リングを上記縮径部に装着して上記縮径部の先
端を補強リングから突き出させる補強リング装着
工程を行うときに、上記縮径部の先端を圧潰して
その先端にリング状の膨径部を形成する圧潰工程
を行い、その後、上記縮径部の内面に雌ねじを形
成するものである。 A method for reinforcing a threaded diameter-reduced end of a pipe according to the second invention is to attach a reinforcing ring to the diameter-reduced portion formed at the end of a metal pipe, thereby attaching the reinforcing ring to the diameter-reduced portion. When carrying out a reinforcing ring mounting step in which the tip of the reduced diameter portion is made to protrude from the reinforcing ring, a crushing step is performed in which the tip of the reduced diameter portion is crushed to form a ring-shaped expanded diameter portion at the tip. Then, a female thread is formed on the inner surface of the reduced diameter portion.
第３番目の発明によるパイプのねじ付縮径端部
の補強方法は、上記補強リング装着工程と、上記
圧潰工程とを別工程で行い、これらの工程を行つ
た後で、上記縮径部の内面に雌ねじを形成するも
のである。 A method for reinforcing a threaded diameter-reduced end of a pipe according to a third aspect of the invention is to perform the reinforcing ring mounting step and the crushing step in separate steps, and after performing these steps, to A female thread is formed on the inner surface.
［作用］
第１番目の発明によれば、内面に雌ねじが形成
されていることによつて強度低下を来している縮
径部が補強リングにより補強される。また、補強
リングから突き出された縮径部の先端に具備され
ている膨径部が補強リングの抜け落ちを防止する
のみならず、その膨径部は縮径部の先端を圧潰す
ることによりリング状に形成されているため膨径
部が縮径部の先端の変形や割れを防ぐことに役立
つ。[Operation] According to the first aspect of the invention, the reduced diameter portion whose strength is reduced due to the internal thread formed on the inner surface is reinforced by the reinforcing ring. In addition, the expanded diameter part provided at the tip of the reduced diameter part that protrudes from the reinforcing ring not only prevents the reinforcing ring from falling off, but also allows the expanded diameter part to form a ring shape by crushing the tip of the reduced diameter part. The expanded diameter part helps prevent deformation and cracking of the tip of the reduced diameter part.
第２番目と第３番目の発明によれば、第１番目
の発明によるパイプのねじ付縮径端部の補強構造
が容易に得られる。 According to the second and third inventions, the reinforcing structure for the threaded reduced diameter end of the pipe according to the first invention can be easily obtained.
［実施例］
第１図は本発明の実施例によるパイプのねじ付
縮径端部の補強構造を示す一部縦断側面図、第２
図は第１図の部を拡大した断面図である。[Example] Fig. 1 is a partially longitudinal side view showing a reinforcing structure for a threaded diameter-reduced end of a pipe according to an embodiment of the present invention;
The figure is an enlarged sectional view of the part shown in FIG. 1.
金属パイプ１はスプリンクラー用巻出し配管に
用いられるもので、その端部にテーパ部１１とス
トレートな縮径部１２とが形成されている。これ
らのテーパ部１１および縮径部１２は金属パイプ
１の端部にスウエージング加工を施すことにより
形成されたものである。縮径部１２には補強リン
グ２が外嵌合状に装着されている。また、第２図
に詳細に示したように、補強リング２から突き出
された縮径部１２の先端１３に、その先端を圧潰
することにより形成されたリング状の膨径部１４
が具備されている。さらに、縮径部１２の内面テ
ーパ雌ねじ１５が形成されている。 The metal pipe 1 is used for unwinding piping for a sprinkler, and has a tapered part 11 and a straight reduced diameter part 12 formed at its end. The tapered portion 11 and the reduced diameter portion 12 are formed by swaging the end portion of the metal pipe 1. A reinforcing ring 2 is attached to the reduced diameter portion 12 so as to fit outwardly. Further, as shown in detail in FIG. 2, a ring-shaped enlarged diameter portion 14 is formed at the tip 13 of the reduced diameter portion 12 protruding from the reinforcing ring 2 by crushing the tip.
is equipped. Further, a tapered female thread 15 is formed on the inner surface of the reduced diameter portion 12 .
補強リング２はリング状に曲げた金属製の帯板
や綿材の端部同士を鍛接や溶接などの適宜手段で
接合したものであつても、金属製のパイプを所定
幅に切断したものであつてもよい。また、補強リ
ング２は縮径部１２に圧入されたものでも、がた
つきのほとんどない状態に嵌着されたものでもよ
い。この実施例では補強リング２として金属パイ
プ１よりも引張強度の大きいものを用いている
が、必ずしもそうする必要はない。 The reinforcing ring 2 may be made by joining the ends of a metal strip or cotton material bent into a ring shape by forge welding or welding, or by cutting a metal pipe to a predetermined width. It may be hot. Furthermore, the reinforcing ring 2 may be press-fitted into the reduced diameter portion 12, or may be fitted with almost no wobbling. In this embodiment, a reinforcing ring 2 having a tensile strength higher than that of the metal pipe 1 is used, but it is not necessary to do so.
リング状の膨径部１４の端面形状は第２図のよ
うに外拡がりテーパ形状であつても，その他の形
状、たとえば山形に膨出した形状などであつても
よい。膨径部１４の最大外周直径は補強リング２
の内周直径よりも大きくなつている必要がある
が、その差はきわめて僅かでよい。 The end face shape of the ring-shaped enlarged diameter portion 14 may be an outwardly expanding tapered shape as shown in FIG. 2, or may have another shape, such as a bulged mountain shape. The maximum outer diameter of the expanded diameter portion 14 is the same as that of the reinforcing ring 2.
Although the diameter must be larger than the inner circumference of the diameter, the difference may be extremely small.
この補強構造によると、金属パイプ１の縮径部
１２が補強リング２により補強されると同時に、
その縮径部１２の先端１３がリング状の膨径部１
４によつて補強される。従つて、内面に雌ねじ１
５が形成されているために縮径部１２だけでは強
度不足を生じるような場合でも、補強リング２や
リング状の膨径部１４によつてそのような強度不
足が確実に解消されて十分な強度を有するように
なる。特に、上記膨径部１４が縮径部１２の最先
位置に形成されていると、縮径部が最先位置から
割れたりすることが有効に防止される。また、膨
径部１４は上述した補強作用のみならず補強リン
グ２の抜け落ちを防ぐことに役立つため、補強リ
ング２の抜け落ちに伴う強度低下を来す心配がな
く、過酷な圧力条件下でも長期に亘つて確実かつ
十分な強度が保たれる。 According to this reinforcing structure, the reduced diameter portion 12 of the metal pipe 1 is reinforced by the reinforcing ring 2, and at the same time,
The tip 13 of the reduced diameter part 12 is a ring-shaped enlarged diameter part 1
Reinforced by 4. Therefore, there is a female thread 1 on the inner surface.
5, even if the reduced diameter portion 12 alone causes insufficient strength, the reinforcing ring 2 and the ring-shaped enlarged diameter portion 14 will surely eliminate such insufficient strength and provide sufficient It becomes strong. Particularly, when the expanded diameter portion 14 is formed at the foremost position of the reduced diameter portion 12, the reduced diameter portion is effectively prevented from cracking from the foremost position. In addition, the expanded diameter portion 14 not only has the above-mentioned reinforcing effect, but also serves to prevent the reinforcing ring 2 from falling off, so there is no fear that the strength will decrease due to the reinforcing ring 2 falling off, and it will last for a long time even under severe pressure conditions. Reliably and sufficient strength is maintained throughout.
第３Ａ図、第３Ｂ図および第４図には本発明の
実施例によるパイプのねじ付縮径端部の補強方法
を示してある。 3A, 3B and 4 illustrate a method of reinforcing a threaded reduced diameter end of a pipe according to an embodiment of the present invention.
この方法は、補強リング装着工程と圧潰工程と
を含んでいる。補強リング装着工程は金属パイプ
１の端部に形成された縮径部１２に補強リング２
を外嵌着することによりその補強リング２を上記
縮径部１２に装着して縮径部１２の先端１３を補
強リング２から突き出される工程である。圧潰工
程は縮径部１２の先端を圧潰してその先端に膨径
部１４を形成する工程である。これらの補強リン
グ装着工程と圧潰工程とは同じ工程で行つても、
別工程で行つてもよい。 This method includes a reinforcing ring mounting step and a crushing step. In the reinforcing ring attachment process, the reinforcing ring 2 is attached to the reduced diameter part 12 formed at the end of the metal pipe 1.
This is a step in which the reinforcing ring 2 is attached to the reduced diameter portion 12 by externally fitting the reinforcing ring 2, and the tip 13 of the reduced diameter portion 12 is projected from the reinforcing ring 2. The crushing step is a step of crushing the tip of the reduced diameter portion 12 to form the expanded diameter portion 14 at the tip. Even if these reinforcing ring installation process and crushing process are performed in the same process,
This may be done in a separate process.
補強リング装着工程や圧潰工程は、補強リング
２に対する環状の押圧面（リング押圧面）４１
と、金属パイプ１の縮径部１２の先端１３に対す
る環状の押圧面（先端押圧面）４２と、コア部４
３とを有する金型４を好適に用い得る。この金型
４の先端押圧面４２は第５図に拡大して示してあ
るようにやゝ傾斜している。 In the reinforcing ring mounting process and crushing process, an annular pressing surface (ring pressing surface) 41 is applied to the reinforcing ring 2.
, an annular pressing surface (tip pressing surface) 42 for the tip 13 of the reduced diameter portion 12 of the metal pipe 1, and a core portion 4.
3 can be suitably used. The tip pressing surface 42 of this mold 4 is slightly inclined as shown in an enlarged view in FIG.
補強リング装着工程と圧潰工程とを同じ工程で
行う場合は、たとえば第３Ａ図のように金属パイ
プ１の縮径部１２の先端１３に補強リング２を少
し嵌め込んで保持させた状態から金型４のコア部
４３を縮径部１２に挿入していき、リング押圧面
４１で補強リング２を押し込んで縮径部１２の所
定位置に装着し、補強リング２から縮径部１２の
先端１３を突き出させる。ここで、補強リング２
が所定位置に装着される直前で先端押圧面４２が
縮径部１２の先端１３に当たり、補強リング２が
所定位置に装着された時点で先端押圧面４２が縮
径部１２の先端を圧潰するようにリング押圧面４
１と先端押圧面４２との位置関係が定まつている
と、補強リング２が所定位置に装着されるのと同
時に先端１３の圧潰が終了し、先端１３に膨径部
１４が形成される。第４図と第５図に補強リング
２の装着と先端１３の圧潰とが終了した時点の状
態を示してある。なお、補強リング２からの縮径
部１２の先端１３の突出幅は１〜1.5mm程度のわ
ずかな幅でよい。この突出幅は圧潰工程を行なえ
る幅であれば上記範囲に限定されない。 When the reinforcing ring mounting process and the crushing process are performed in the same process, for example, as shown in FIG. 4 into the reduced diameter part 12, push the reinforcing ring 2 into the reduced diameter part 12 using the ring pressing surface 41, and attach it to the predetermined position of the reduced diameter part 12. Make it stick out. Here, reinforcement ring 2
The tip pressing surface 42 hits the tip 13 of the reduced diameter part 12 just before the reinforcing ring 2 is installed in a predetermined position, and the tip pressing surface 42 crushes the tip of the reduced diameter part 12 when the reinforcing ring 2 is installed in a predetermined position. Ring pressing surface 4
When the positional relationship between the reinforcing ring 2 and the tip pressing surface 42 is determined, the crushing of the tip 13 is completed at the same time as the reinforcing ring 2 is installed in a predetermined position, and the expanded diameter portion 14 is formed at the tip 13. 4 and 5 show the state at the time when the reinforcing ring 2 has been installed and the tip 13 has been crushed. Note that the protruding width of the tip 13 of the reduced diameter portion 12 from the reinforcing ring 2 may be a small width of about 1 to 1.5 mm. This protrusion width is not limited to the above range as long as it is wide enough to perform the crushing process.
補強リング装着工程と圧潰工程とを別工程で行
う場合は、第３Ｂ図のように縮径部１２の所定位
置に補強リング２を適宜方法で外嵌合状に装着し
た後、金型４を移動させてその先端押圧面４２で
縮径部１２の先端１３を圧潰して膨径部１４を形
成する。 When the reinforcing ring attachment process and the crushing process are performed in separate processes, the reinforcing ring 2 is attached to the predetermined position of the reduced diameter portion 12 by an appropriate method in an externally fitting manner, as shown in FIG. 3B, and then the mold 4 is attached. The distal end 13 of the reduced diameter section 12 is crushed by the distal end pressing surface 42 of the distal end 12 to form the enlarged diameter section 14 .
以上のようにして補強リング２の装着と膨径部
１４の形成とを行つた後、縮径部１２の内面にテ
ーパ雌ねじ１５を形成する。 After the reinforcing ring 2 is attached and the expanded diameter portion 14 is formed as described above, a tapered female thread 15 is formed on the inner surface of the reduced diameter portion 12.
［発明の効果］
以上のように第１番目の発明によれば、内面に
雌ねじが形成されているために金属パイプの端部
の縮径部自体に強度不足が生じているとしても、
その縮径部に装着された補強リングや補強リング
の抜け落ちを防いでいるリング状の膨径部によつ
て縮径部が確実かつ十分に補強され、全体的には
強度不足を生じることがない。そのため、高い流
体圧力の加わるスプリンクラー用巻出し配管に用
いられるパイプなどに利用すると好適な結果が得
られる。[Effects of the Invention] As described above, according to the first invention, even if the reduced diameter part itself at the end of the metal pipe lacks strength due to the internal thread formed on the inner surface,
The reduced diameter part is reliably and sufficiently reinforced by the reinforcing ring attached to the reduced diameter part and the ring-shaped expanded diameter part that prevents the reinforcing ring from falling off, and there is no lack of overall strength. . Therefore, suitable results can be obtained when used in pipes used for unwinding piping for sprinklers to which high fluid pressure is applied.
第２番目や第３番目の発明によれば、上述した
強度不足を生じることのない補強構造が容易に得
られ、特に第２番目の発明では、補強リング装着
工程と圧潰工程とが同じ工程に含まれているため
生産効率が容易に向上するという効果がある。 According to the second and third inventions, a reinforcing structure that does not cause the above-mentioned insufficient strength can be easily obtained, and in particular, in the second invention, the reinforcing ring mounting process and the crushing process are performed in the same process. This has the effect of easily improving production efficiency.
第１図は本発明の実施例によるパイプのねじ付
縮径端部の補強構造を示す一部縦断側面図、第２
図は第１図の部を拡大した断面図、第３Ａ図と
第３Ｂ図と第４図は本発明の実施例によるパイプ
のねじ付縮径端部の補強方法を示す断面図、第５
図は第４図の部を拡大した断面図である。
１……金属パイプ、２……補強リング、１２…
…縮径部、１３……縮径部の先端、１４……膨径
部、１５……テーパ雌ねじ。
FIG. 1 is a partially vertical side view showing a reinforcing structure for the threaded diameter-reduced end of a pipe according to an embodiment of the present invention, and FIG.
The figure is an enlarged sectional view of the part shown in FIG.
The figure is an enlarged sectional view of the part shown in FIG. 4. 1...Metal pipe, 2...Reinforcement ring, 12...
...Reduced diameter part, 13... Tip of reduced diameter part, 14... Expanded diameter part, 15... Tapered female thread.
Claims (1)
リングが外嵌合状に装着され、その補強リングか
ら突き出された上記縮径部の先端にその先端を圧
潰することにより形成されたリング状の膨径部が
具備されていると共に、上記縮径部の内面に雌ね
じが形成されていることを特徴とするパイプのね
じ付縮径端部の補強構造。 ２ 金属パイプの端部に形成された縮径部に補強
リングを外嵌着することによりその補強リングを
上記縮径部に装着して上記縮径部の先端を補強リ
ングから突き出させる補強リング装着工程を行う
ときに、上記縮径部の先端を圧潰してその先端に
リング状の膨径部を形成する圧潰工程を行い、そ
の後、上記縮径部の内面に雌ねじを形成すること
を特徴とするパイプのねじ付縮径端部の補強方
法。 ３ 金属パイプの端部に形成された縮径部に補強
リングを外嵌着することによりその補強リングを
上記縮径部に装着して上記縮径部の先端を補強リ
ングから突き出させる補強リング装着工程と、上
記縮径部の先端を圧潰してその先端にリング状の
膨径部を形成する圧潰工程とを別工程で行い、こ
れらの工程を行つた後で、上記縮径部の内面に雌
ねじを形成することを特徴とするパイプのねじ付
縮径端部の補強方法。[Claims] 1. A reinforcing ring is fitted externally to a reduced diameter portion formed at the end of a metal pipe, and the tip of the reinforcing ring is crushed by the tip of the reduced diameter portion protruding from the reinforcing ring. 1. A reinforcing structure for a threaded reduced-diameter end of a pipe, characterized in that the reduced-diameter end of a pipe is provided with a ring-shaped enlarged-diameter portion formed by this method, and a female thread is formed on the inner surface of the reduced-diameter portion. 2 Reinforcement ring attachment by externally fitting a reinforcing ring onto a reduced diameter part formed at the end of a metal pipe, and then attaching the reinforcing ring to the reduced diameter part so that the tip of the reduced diameter part protrudes from the reinforcing ring. When performing the step, a crushing step is performed to crush the tip of the reduced diameter portion to form a ring-shaped expanded diameter portion at the tip, and then a female thread is formed on the inner surface of the reduced diameter portion. A method of reinforcing the threaded reduced diameter end of a pipe. 3. Reinforcement ring attachment by externally fitting a reinforcing ring onto a reduced diameter part formed at the end of a metal pipe, thereby attaching the reinforcing ring to the reduced diameter part, and causing the tip of the reduced diameter part to protrude from the reinforcing ring. and a crushing step of crushing the tip of the reduced diameter portion to form a ring-shaped expanded diameter portion at the tip are performed in separate steps, and after these steps are performed, the inner surface of the reduced diameter portion is A method for reinforcing a threaded reduced diameter end of a pipe, the method comprising forming a female thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17783790A JPH0466234A (en) | 1990-07-04 | 1990-07-04 | Reinforcing of diameter reduced end with screw of tube and its reinforcing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17783790A JPH0466234A (en) | 1990-07-04 | 1990-07-04 | Reinforcing of diameter reduced end with screw of tube and its reinforcing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0466234A JPH0466234A (en) | 1992-03-02 |
| JPH0557047B2 true JPH0557047B2 (en) | 1993-08-23 |
Family
ID=16037985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17783790A Granted JPH0466234A (en) | 1990-07-04 | 1990-07-04 | Reinforcing of diameter reduced end with screw of tube and its reinforcing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0466234A (en) |
-
1990
- 1990-07-04 JP JP17783790A patent/JPH0466234A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0466234A (en) | 1992-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3063906B2 (en) | Method of fixing hose to nipple and hose joint obtained by this method | |
| US5919016A (en) | Blind threaded nut | |
| US20080272593A1 (en) | Fitting And Method For Manufacturing A Fitting | |
| JPS6242168B2 (en) | ||
| JP2008116052A (en) | Blind rivet element and use of the same | |
| JPH0551063B2 (en) | ||
| JP2001519242A (en) | Blind rivet fastening | |
| JPS631808A (en) | Metallic blind rivet | |
| US4381594A (en) | Method of cold forming coupling shell | |
| JPH08509285A (en) | A trapezoid fixture with a two-piece extension | |
| US8292334B2 (en) | Flared cone fitting | |
| JPH0557047B2 (en) | ||
| JPH1054893A (en) | Tube and end plug assembly and method for contacting the end plug to hollow tube | |
| JPH0929362A (en) | Device and method for forming connecting end of pipe | |
| JP4503862B2 (en) | Processing method of terminal exhaust pipe | |
| JP3023353B1 (en) | Connector bolt and manufacturing method thereof | |
| JPH10318083A (en) | Common rail and its manufacture | |
| CA2442023C (en) | O-ring seal flat face fitting | |
| JPH0429126Y2 (en) | ||
| JPH0785817B2 (en) | Tube expansion device | |
| JPH0861339A (en) | Blind rivet assembly | |
| JPH07285078A (en) | Caulking jig and coupling fitting applicable to this jig | |
| JPS5845779Y2 (en) | Lining structure nozzle with pipe expansion | |
| AU2002306914A1 (en) | O-ring seal flat face fitting | |
| JP5642741B2 (en) | Joint structure of pipe material and mounting washer |