JPH09100969A - Flared type pipe joint - Google Patents
Flared type pipe jointInfo
- Publication number
- JPH09100969A JPH09100969A JP7259636A JP25963695A JPH09100969A JP H09100969 A JPH09100969 A JP H09100969A JP 7259636 A JP7259636 A JP 7259636A JP 25963695 A JP25963695 A JP 25963695A JP H09100969 A JPH09100969 A JP H09100969A
- Authority
- JP
- Japan
- Prior art keywords
- flare
- pipe
- peripheral surface
- tapered
- joint
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/04—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、フレア接続形の管
継手に関し、特に薄肉ステンレス管を接続するのに適し
た管継手に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flare connection type pipe joint, and more particularly to a pipe joint suitable for connecting thin stainless steel pipes.
【０００２】[0002]
【従来の技術】従来、図４に示すフレア形管継手があ
る。このものは接続しようとする管（ステンレス管な
ど）80の先端を袋ナット20に挿通し、管の先端部90を袋
ナットの押付けテーパ面40に沿ってテーパ状のフレア加
工をし、この袋ナット20と先端が同じく先細りテーパ面
60でこの一部にパッキン30を装着した継手本体50とを螺
合して管を挟着接続するものであった。2. Description of the Related Art Conventionally, there is a flared pipe joint shown in FIG. In this case, the tip of the pipe (stainless steel pipe, etc.) 80 to be connected is inserted into the cap nut 20, and the pipe end 90 is pressed flare along the taper surface 40 of the cap nut to form a flare. The nut 20 and the tip are the same tapered surface
In 60, a pipe is sandwiched and connected by screwing a joint main body 50 in which packing 30 is attached to this part.
【０００３】[0003]
【発明が解決しようとする課題】上記したフレア形管継
手は通常呼び口径25〜150（mm）程度まで使用されてい
るが、従来、フレア加工は接続しようとする管の口径サ
イズによらず一律の挟着部長さを目安にかつテーパ角度
が一律角度となるように拡管していた。従って、この場
合大口径になっても挟着部となるフレア部の長さの変化
が少なく、特に60（mm）以上の大口径サイズではその管
口径に比べて挟着長さが極端に小さくなることから強度
不足となり、よって、十分な引抜き阻止力を得ることが
出来なかった。The above flared pipe fitting is normally used up to a nominal diameter of 25 to 150 (mm), but in the past, flaring is uniform regardless of the diameter of the pipe to be connected. The pipe length was expanded so that the taper angle would be a uniform angle based on the length of the sandwiched portion. Therefore, in this case, there is little change in the length of the flare part that becomes the clamping part even with a large diameter, and especially for a large diameter size of 60 (mm) or more, the clamping length is extremely smaller than the pipe diameter. As a result, the strength was insufficient, and it was not possible to obtain a sufficient pull-out prevention force.
【０００４】本発明はこのような問題を解決するもので
何れの口径サイズにおいても十分な引抜き阻止力を備え
たフレア形管継手を提供することを目的とする。An object of the present invention is to solve such a problem and to provide a flare type pipe joint having a sufficient pulling-out preventing force in any size of the bore.
【０００５】[0005]
【課題を解決するための手段】本発明は、端部をフレア
状に拡管したフレア管を接続するための管継手であっ
て、端部に先細りのテーパ外周面を有する継手本体と、
テーパ内周面を有する袋ナットとからなり、前記継手本
体と袋ナットの螺合締付けにより、前記テーパ外周面と
テーパ内周面との間に前記管のフレア部を挟着して接続
するフレア形管継手において、前記フレア管の管外径Ｄ
0と拡管後のフレア端部の管外径Ｄ1との比で表わされる
拡管率Ｄ1／Ｄ0×100を110〜115％とすると共にフレア
部のテーパ角度を30〜40度としたフレア形管継手であ
る。DISCLOSURE OF THE INVENTION The present invention is a pipe joint for connecting flare pipes having flared end portions, the joint body having a tapered outer peripheral surface at the end portion,
A flare comprising a cap nut having a taper inner peripheral surface, and a flare portion of the pipe is sandwiched and connected between the taper outer peripheral surface and the taper inner peripheral surface by screwing and tightening the joint body and the cap nut. Outer diameter D of the flare pipe in a shaped pipe joint
Flare with a pipe expansion ratio D 1 / D 0 × 100 represented by the ratio of 0 to the pipe outer diameter D 1 at the flare end after pipe expansion was 110 to 115% and the flare taper angle was 30 to 40 degrees. Shaped pipe joint.
【０００６】また本発明は、端部をフレア状に拡管した
フレア管を接続するための管継手であって、端部に先細
りのテーパ外周面を有する継手本体と、前記テーパ外周
面に合うテーパ内周面と外面が凹凸外周面となった環状
のリテーナと、前記フレア管のフレア状端部が挿通でき
る内径であると共に、前記リテーナの凹凸外周面と合致
する凹凸内周面を形成した環状の押輪とからなり前記リ
テーナを外挿したフレア管の端部からリテーナの凹凸外
周面と押輪の凹凸内周面を合致させて押輪を装着し、前
記テーパ外周面とテーパ内周面との間に前記管のフレア
部を挟着して接続するフレア形管継手において、前記フ
レア管の管外径Ｄ0と拡管後のフレア端部の管外径Ｄ1と
の比で表わされる拡管率Ｄ1／Ｄ0×100を110〜115％と
すると共にフレア部のテーパ角度を30〜40度としたフレ
ア形管継手である。Further, the present invention is a pipe joint for connecting a flare pipe whose end portion is expanded in a flare shape, wherein a joint body having a tapered outer peripheral surface at the end portion, and a taper fitting to the tapered outer peripheral surface. An annular retainer having an inner peripheral surface and an outer surface that are uneven outer peripheral surfaces, and an annular inner surface that has an inner diameter that allows the flare end of the flare tube to be inserted and that matches the uneven outer peripheral surface of the retainer. The push ring is attached to the tapered outer circumferential surface and the tapered inner circumferential surface by fitting the uneven outer circumferential surface of the retainer and the uneven inner circumferential surface of the push ring from the end of the flare tube with the retainer inserted. In a flare type pipe joint in which the flare portion of the pipe is sandwiched and connected, the pipe expansion ratio D represented by the ratio of the pipe outer diameter D 0 of the flare pipe to the pipe outer diameter D 1 of the flare end after pipe expansion. flared portion with a 1 / D 0 × 100 to 110 to 115 percent The taper angle is flared section tube joint was 30-40 degrees.
【０００７】以上のようにフレア部の拡管率とテーパ角
度とを一定に相似形となるようにしたから、まず、フレ
ア部の挟着部長さが接続しようとする管の口径サイズに
比例して大きくなり、結果、管の引抜き阻止力も略比例
して大きくとれる。また、フレア部の形状は各口径サイ
ズを通して相似形になっているからこの部分を密封シー
ルするパッキンのシール性能は各サイズとも安定したも
のとなる。拡管率は110％以下であると、挟着部の長さ
が十分でなく引抜き阻止力が小さくなり、115％以上で
あると、拡管による歪や応力の影響が出始めて強度的に
不安がある。As described above, since the expansion ratio and the taper angle of the flare portion are made to have a constant similar shape, first, the length of the flared portion at the sandwiching portion is proportional to the diameter size of the pipe to be connected. As a result, the pull-out preventing force of the pipe can be increased substantially in proportion. In addition, since the flare portion has a similar shape throughout the size of each diameter, the sealing performance of the packing that hermetically seals this portion is stable for each size. If the expansion ratio is 110% or less, the length of the sandwiched part is not sufficient and the pulling-out prevention force becomes small, and if it is 115% or more, the strain and stress due to the expansion will start to appear and the strength is uncertain. .
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施例について図
面を参照して説明する。図１は、比例的小口径（50mm以
下）の場合で、ねじ込み形の継手の例を示す断面図であ
る。図において１はステンレス鋼よりなる継手本体で、
ここでは一端部しか図示していないが、ソケット形やエ
ルボ形及びチー形等の形状となっている。その外端部に
は袋ナット２との螺合用おねじ11を有し、さらにその端
には先細りのテーパ外周面12とパッキン装着用の環状溝
13及び上記テーパ面12に対し小径側に平行移動した小径
テーパ外周面14が続いて設けられている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an example of a screw-in type joint in the case of a proportional small diameter (50 mm or less). In the figure, 1 is a joint body made of stainless steel,
Although only one end is shown here, it has a shape such as a socket shape, an elbow shape and a chee shape. The outer end has an external thread 11 for screwing with the cap nut 2, and further has a tapered outer peripheral surface 12 and an annular groove for mounting packing at the end thereof.
13 and a small-diameter taper outer peripheral surface 14 that is translated in parallel with the taper surface 12 toward the small-diameter side.
【０００９】ゴムパッキン３は、上記環状溝13に嵌入し
て装着する部分が断面円形（締付け前の形状）の前部31
と、上記小径テーパ外周面14を覆うようにして継手本体
の先端部15まで延びた帯状の後部32とからなっている。
袋ナット２は、ステンレス鋼あるいは銅合金などからな
り、接続しようとするステンレス製のフレア管10の外径
より若干大きい内径23と、継手本体側のテーパ外周面12
と同じ角度のテーパ内周面22及び螺合用めねじ21を備え
ている。The rubber packing 3 has a front portion 31 having a circular cross-section (shape before tightening) in a portion to be fitted into and mounted in the annular groove 13.
And a strip-shaped rear portion 32 extending to the front end portion 15 of the joint body so as to cover the small-diameter tapered outer peripheral surface 14.
The cap nut 2 is made of stainless steel or a copper alloy, and has an inner diameter 23 slightly larger than the outer diameter of the stainless flare tube 10 to be connected and a tapered outer peripheral surface 12 on the joint body side.
The taper inner peripheral surface 22 and the internal thread 21 for screwing are provided at the same angle.
【００１０】この例の継手の接続手順は、フレア管10に
袋ナット２を通した後、管の端部を拡管治具によって下
記する実施例によってフレア状に拡開し滑らかなフレア
部10ａを形成する。次に袋ナット２を継手本体１に螺合
することによって、フレア部10ａはゴムパッキン３に当
接してこれを潰してまずゴムシールし、さらに締め付け
てフレア内面の先端部分をテーパ外周面12に当接させ、
圧着してメタルシールを働かせる。このように二重シー
ルをしてスキマ腐食の防止と火災時のメタルシールがな
されるようにしている。The connection procedure of the joint of this example is as follows. After passing the cap nut 2 through the flare pipe 10, the end of the pipe is flared by a pipe expanding jig in the following embodiment to form a smooth flare portion 10a. Form. Next, by screwing the cap nut 2 into the joint body 1, the flare portion 10a comes into contact with the rubber packing 3 and is crushed to seal the rubber first, and then further tightened so that the tip end portion of the flare inner surface contacts the tapered outer peripheral surface 12. Contact
Press it to make the metal seal work. In this way, a double seal is used to prevent gap corrosion and provide a metal seal in case of fire.
【００１１】次に、図２及び図３は他の実施例を示すフ
レア継手で、主に口径60mm以上の大口径の継手の構造に
適している。この継手は、継手本体４と押輪５とリテー
ナ６とパッキン７とからなり、ステンレス管10に形成し
たフレア部10ａを継手本体４とリテーナ６とで挟み、押
輪５を締め付けることによって接続するものである。継
手本体４は内部に貫通流路が有り、両端部外面にパッキ
ン溝43を有する先細りのテーパ外周面42と小径テーパ外
周面及び中央部外面にはつば部41が形成されている。パ
ッキン溝13には、上記実施例と同様断面円形の前部71と
帯状の後部72とからなるゴムパッキン７を装着してい
る。Next, FIG. 2 and FIG. 3 are flare joints showing other embodiments, which are mainly suitable for the structure of a joint having a large diameter of 60 mm or more. This joint is composed of a joint body 4, a push ring 5, a retainer 6 and a packing 7. The flare portion 10a formed on the stainless steel pipe 10 is sandwiched between the joint body 4 and the retainer 6 and the push ring 5 is tightened for connection. is there. The joint body 4 has a through-flow passage inside, and has a tapered outer peripheral surface 42 having packing grooves 43 on the outer surfaces of both ends, a tapered outer peripheral surface of a small diameter, and a collar portion 41 on the outer surface of the central portion. The packing groove 13 is fitted with a rubber packing 7 including a front portion 71 having a circular cross section and a belt-shaped rear portion 72 as in the above embodiment.
【００１２】リテーナ６は、内側にフレア管10のフレア
部10ａに当接するテーパ内周面62を有した環状で、外側
に平行外面63とスプライン状の凹凸外周面64を有し、平
行外面63と凹凸外周面64との間で段部65を形成してい
る。凹凸外周面64は後述する押輪５側の凹凸内周面51に
合致して挿通するようになっている。押輪５はボルトナ
ット締結式のフランジ状で、内面はフレア管10のフレア
部10ａが挿通できる内径を有し、リテーナ６の凹凸外周
面64に合致して外挿出来るスプライン状の凹凸内周面51
を有する。そして図２，図３のごとくリテーナ61に押輪
５を外装した後、リテーナ６を回転して周方向の位置関
係を少し変えることにより、リテーナ６の凹凸外周面の
段部65と押輪５の凹凸内周面51の段部52とが重なり合っ
て係合して、抜け止めとなる。The retainer 6 is an annular shape having a tapered inner peripheral surface 62 that abuts against the flare portion 10a of the flare tube 10, an outer parallel outer surface 63 and a spline-shaped uneven outer peripheral surface 64, and a parallel outer surface 63. A stepped portion 65 is formed between the concave and convex outer peripheral surface 64. The uneven outer peripheral surface 64 is adapted to be inserted through the uneven inner peripheral surface 51 on the side of the push ring 5 described later. The push ring 5 has a bolt-nut fastening type flange shape, and the inner surface has an inner diameter that allows the flare portion 10a of the flare tube 10 to be inserted therethrough, and a spline-shaped uneven inner peripheral surface that can be externally fitted to match the uneven outer peripheral surface 64 of the retainer 6. 51
Having. Then, as shown in FIGS. 2 and 3, after the push ring 5 is mounted on the retainer 61, the retainer 6 is rotated to slightly change the positional relationship in the circumferential direction. The stepped portion 52 of the inner peripheral surface 51 overlaps and engages with each other to prevent coming off.
【００１３】接続に当たっては図２の右側で示すごと
く、フレア管10にリテーナ６を外挿してフレア管10の端
部に下記するフレア部10ａを形成し、フレア管10のフレ
ア部10ａから押輪５を挿通する。フレア部10ａとリテー
ナ６に挿通した後、押輪５をリテーナ６に対して周方向
に少し回転させると、押輪５とリテーナ６は両スプライ
ン状凹凸面64，51が重なり合って係合する。その後、両
押輪５を継手本体４に対してボルトナットで締結するこ
とにより、リテーナ６は押輪５で押されて、フレア部10
ａを継手本体４側に押し付け挟着する。そして図２の左
側断面で示すごとく、フレア部10ａの大径側で継手本体
のテーパ外周面42とシールが行われ、フレア部10ａの小
径側でゴムパッキン７が継手本体との間で挟着されてシ
ールが行われる。尚、ゴムパッキン７の後部72は継手本
体の端部にまで延び、継手本体４とフレア部10の金属面
同士の間で隙間が形成されることを防止し、いわゆる隙
間腐食を防止する。In connection, as shown on the right side of FIG. 2, the retainer 6 is externally inserted into the flare tube 10 to form a flare portion 10a described below at the end of the flare tube 10, and the flare portion 10a of the flare tube 10 is pushed to the pressing ring 5. Through. After inserting the flare portion 10a and the retainer 6 into the retainer 6, the push wheel 5 is slightly rotated in the circumferential direction with respect to the retainer 6, so that the spline-shaped uneven surfaces 64 and 51 of the push wheel 5 and the retainer 6 overlap and engage with each other. After that, both push wheels 5 are fastened to the joint body 4 with bolts and nuts, whereby the retainer 6 is pushed by the push wheels 5 and the flare portion 10 is pressed.
A is pressed against the joint body 4 side and clamped. Then, as shown in the left cross section of FIG. 2, sealing is performed with the tapered outer peripheral surface 42 of the joint body on the large diameter side of the flare portion 10a, and the rubber packing 7 is sandwiched between the joint body and the small diameter side of the flare portion 10a. Then, the seal is performed. The rear portion 72 of the rubber packing 7 extends to the end of the joint body to prevent a gap from being formed between the metal surfaces of the joint body 4 and the flare portion 10 and prevent so-called crevice corrosion.
【００１４】[0014]
【実施例】さて、上記２例のフレア管継手におけるフレ
ア管のフレア部10aの拡管については、図１，図２に示
すフレア管の外径Ｄ0に対して管端の管外径Ｄ1が110〜1
15％の比率になるように拡径させかつこのときのテーパ
角度は30〜40度に設定する。上記実施例ではいずれも拡
管率は112.5％，テーパ角度は35度として行った。この
ようにしたからフレア部の形状寸法は相似形で比例的に
変化し、挟着部の長さも口径サイズに相応した長さを保
つことができる。上記ねじ込み形及びフランジ形の例に
ついて、呼び口径60〜100mmの継手各４アイテムを上記
のように組み立て、管の引抜き試験及び試験後の漏れを
確認したところいずれも所定の引抜き阻止力以上の結果
が得られ、しかも漏れが発生することもなかった。EXAMPLES Now, for the tube expansion of the flared portion 10a of the flared tube of flared pipe joint of the two examples, FIG. 1, outer diameter D 1 of the tube end relative to the outer diameter D 0 of the flare tube shown in FIG. 2 Is 110-1
The diameter is expanded so that the ratio becomes 15%, and the taper angle at this time is set to 30 to 40 degrees. In all of the above examples, the expansion ratio was 112.5% and the taper angle was 35 degrees. As a result, the shape and size of the flare portion are changed proportionally in a similar manner, and the length of the sandwiching portion can be kept at a length corresponding to the aperture size. For the above-mentioned screw-in type and flange type examples, 4 items each of the joints with nominal diameters of 60 to 100 mm were assembled as described above, and the pipe pull-out test and leakage after the test were confirmed. Was obtained, and no leakage occurred.
【００１５】[0015]
【発明の効果】以上のように本発明によれば、フレア部
の挟着部長さが比例的大きくなるから強度もそれに見合
って強くなり各口径サイズにおいて十分な引抜き阻止力
を得ることができる。As described above, according to the present invention, since the length of the flared portion sandwiched is proportionally increased, the strength is correspondingly increased, and a sufficient pull-out prevention force can be obtained at each aperture size.
【図１】 本発明の一実施例を示すねじ込み形のフレア
形管継手の一部断面図である。FIG. 1 is a partial cross-sectional view of a threaded type flared pipe joint showing an embodiment of the present invention.
【図２】 本発明の他の実施例を示すフランジ形のフレ
ア形管継手の一部断面図である。FIG. 2 is a partial cross-sectional view of a flange type flared pipe joint showing another embodiment of the present invention.
【図３】 図２のフレア形管継手の側面図である。3 is a side view of the flare pipe joint of FIG. 2. FIG.
【図４】 従来のフレア形管継手を示す断面図である。FIG. 4 is a cross-sectional view showing a conventional flared pipe joint.
１，４…継手本体 ２…袋ナット
３，７…ゴムパッキン ５…押輪 ６…リテーナ
10…フレア管 10ａ…フレア部 12，42…テーパ外周面
13，43…環状凹溝 14…小径テーパ外周面 22，62…テーパ内周面
51…凹凸内周面 64…凹凸外周面1, 4 ... Fitting body 2 ... Cap nut
3, 7 ... Rubber packing 5 ... Push ring 6 ... Retainer
10 ... flare tube 10a ... flare part 12, 42 ... taper outer peripheral surface
13, 43 ... Annular groove 14 ... Small diameter tapered outer peripheral surface 22, 62 ... Tapered inner peripheral surface
51 ... Uneven inner surface 64 ... Uneven outer surface
Claims (2)
続するための管継手であって、端部に先細りのテーパ外
周面を有する継手本体と、前記テーパ外周面に合うテー
パ内周面を有する袋ナットとからなり、前記継手本体と
袋ナットの螺合締付けにより、前記テーパ外周面とテー
パ内周面との間に前記管のフレア部を挟着して接続する
フレア形管継手において、前記フレア管の管外径Ｄ0と
拡管後のフレア端部の管外径Ｄ1との比で表わされる拡
管率Ｄ1／Ｄ0×100を110〜115％とすると共にフレア部
のテーパ角度を30〜40度としたことを特徴とするフレア
形管継手。1. A pipe joint for connecting flare pipes having flared end portions, the joint body having a tapered outer peripheral surface at an end, and a tapered inner peripheral surface matching the tapered outer peripheral surface. In a flare type pipe joint comprising a cap nut having, and connecting the flare portion of the pipe between the tapered outer peripheral surface and the tapered inner peripheral surface by screwing and tightening the joint body and the cap nut. , The pipe expansion ratio D 1 / D 0 × 100 represented by the ratio of the pipe outer diameter D 0 of the flare pipe to the pipe outer diameter D 1 of the flare end after pipe expansion is 110 to 115%, and the flare portion taper Flare type pipe fitting characterized by an angle of 30-40 degrees.
続するための管継手であって、端部に先細りのテーパ外
周面を有する継手本体と、前記テーパ外周面に合うテー
パ内周面と外面が凹凸外周面となった環状のリテーナ
と、前記フレア管のフレア状端部が挿通できる内径であ
ると共に、前記リテーナの凹凸外周面と合致する凹凸内
周面を形成した環状の押輪とからなり前記リテーナを外
挿したフレア管の端部からリテーナの凹凸外周面と押輪
の凹凸内周面を合致させて押輪を装着し、前記テーパ外
周面とテーパ内周面との間に前記管のフレア部を挟着し
て接続するフレア形管継手において、前記フレア管の管
外径Ｄ0と拡管後のフレア端部の管外径Ｄ1との比で表わ
される拡管率Ｄ1／Ｄ0×100を110〜115％とすると共に
フレア部のテーパ角度を30〜40度としたことを特徴とす
るフレア形管継手。2. A pipe joint for connecting flare pipes having flared end portions, the joint body having a tapered outer peripheral surface at the end, and a tapered inner peripheral surface matching the outer tapered surface. And an annular retainer whose outer surface is an uneven outer peripheral surface, and an annular pressing ring which has an inner diameter capable of inserting the flare end of the flare tube and which has an uneven inner peripheral surface that matches the uneven outer peripheral surface of the retainer. From the end of the flare tube with the retainer inserted, the uneven outer surface of the retainer and the uneven inner peripheral surface of the push ring are fitted together to mount the push ring, and the pipe is provided between the tapered outer circumferential surface and the tapered inner circumferential surface. In a flare type pipe joint in which flare portions are sandwiched and connected, the pipe expansion ratio D 1 / D represented by the ratio of the pipe outer diameter D 0 of the flare pipe to the pipe outer diameter D 1 of the flare end after pipe expansion. 0 × 100 is 110 to 115% and the taper angle of the flare is Flare type pipe joint characterized by being set at 30-40 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7259636A JPH09100969A (en) | 1995-10-06 | 1995-10-06 | Flared type pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7259636A JPH09100969A (en) | 1995-10-06 | 1995-10-06 | Flared type pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09100969A true JPH09100969A (en) | 1997-04-15 |
Family
ID=17336820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7259636A Pending JPH09100969A (en) | 1995-10-06 | 1995-10-06 | Flared type pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09100969A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004020890A1 (en) * | 2002-09-02 | 2004-03-11 | Chengbiao Ye | Connecting piece of plastic coated steel pipings, and connecting method thereof |
| WO2018155971A1 (en) * | 2017-02-24 | 2018-08-30 | 주식회사 두본후렉시블 | Metal corrugated pipe having flare joint part, and processing apparatus and production method therefor |
-
1995
- 1995-10-06 JP JP7259636A patent/JPH09100969A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004020890A1 (en) * | 2002-09-02 | 2004-03-11 | Chengbiao Ye | Connecting piece of plastic coated steel pipings, and connecting method thereof |
| WO2018155971A1 (en) * | 2017-02-24 | 2018-08-30 | 주식회사 두본후렉시블 | Metal corrugated pipe having flare joint part, and processing apparatus and production method therefor |
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