CN111457173B - Compression type stainless steel corrugated pipe for gas pipeline and assembling method thereof - Google Patents
Compression type stainless steel corrugated pipe for gas pipeline and assembling method thereof Download PDFInfo
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- CN111457173B CN111457173B CN202010451409.0A CN202010451409A CN111457173B CN 111457173 B CN111457173 B CN 111457173B CN 202010451409 A CN202010451409 A CN 202010451409A CN 111457173 B CN111457173 B CN 111457173B
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- stainless steel
- adapter
- pipe body
- adjusting nut
- corrugated pipe
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- 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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
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- 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
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention belongs to the technical field of stainless steel corrugated pipes, and provides a compression type stainless steel corrugated pipe for a gas pipeline and an assembling method thereof, wherein the stainless steel corrugated pipe comprises a stainless steel corrugated pipe body, an adjusting nut is sleeved on the stainless steel corrugated pipe body, and a rubber ring is fixedly arranged on the adjusting nut; the assembling method of the stainless steel corrugated pipe comprises the steps of sleeving an adjusting nut and a rubber ring at one end of a stainless steel corrugated pipe body; positively rotating the threaded sleeve until the end part of the stainless steel corrugated pipe body is exposed; placing a plurality of elastic sheets in the stainless steel corrugated pipe body, and fixing the end part of the stainless steel corrugated pipe body in the circular fixing groove; rotating the threaded sleeve in the opposite direction to enable the small-bore section of the threaded sleeve to be in threaded connection with the adapter; and the adapter is in threaded connection with the end to be connected. The compression type stainless steel corrugated pipe for the gas pipeline and the assembling method thereof have the characteristics of strong applicability and convenience in installation.
Description
Technical Field
The invention relates to the technical field of stainless steel corrugated pipe bodies, in particular to a compression type stainless steel corrugated pipe for a gas pipeline and an assembling method thereof.
Background
The stainless steel corrugated pipe is installed in a liquid conveying system as a flexible pressure-resistant pipe fitting, is used for compensating mutual displacement of a pipeline or machine and equipment connecting ends, absorbs vibration energy, can play roles in vibration reduction, noise reduction and the like, has multiple characteristics of good flexibility, light weight, corrosion resistance, fatigue resistance, high and low temperature resistance and the like, and is widely applied to gas, water heating and oil way pipelines.
In different application scenes, different pipeline connecting pieces need to be connected to the stainless steel corrugated pipe for connection, and in the actual connection process, the pipeline connecting pieces need to be frequently replaced, so that the applicability is poor, and the efficiency of workers in the installation and connection process is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the compression type stainless steel corrugated pipe for the gas pipeline and the assembling method thereof, and the compression type stainless steel corrugated pipe has the characteristics of strong applicability and convenience in installation.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a pressing mode nonrust corrugated steel pipe for gas pipeline, includes the nonrust corrugated steel pipe body, the cover is equipped with adjusting nut on the nonrust corrugated steel pipe body, fixed mounting has the rubber circle on the adjusting nut, the inside wall of adjusting nut and rubber circle and the surface looks adaptation of nonrust corrugated steel pipe body, the one end sealing connection that nonrust corrugated steel pipe body and adjusting nut are close to has the adapter, the cover is equipped with threaded sleeve on the adapter, threaded sleeve's one end and the one end threaded connection that the adapter is close to the rubber circle, threaded sleeve's the other end and adjusting nut and rubber circle threaded connection.
Further, the threaded sleeve comprises a large-aperture section and a small-aperture section, the large-aperture section and the small-aperture section are fixedly connected and communicated with each other, the large-aperture section is in threaded connection with an adjusting nut and a rubber ring, the small-aperture section is in threaded connection with one end, close to the rubber ring, of the adapter, the length of the small-aperture section is smaller than that of the adapter, the length of the large-aperture section is smaller than or equal to the sum of the lengths of the adjusting nut and the rubber ring, and the cross section of the rubber ring is in an inverted L shape.
Furthermore, a circular fixing groove is formed in the end face, close to the stainless steel corrugated pipe body, of the adapter, and the stainless steel corrugated pipe body is arranged in the circular fixing groove and is encapsulated through sealant.
Further, the fixed shell fragment of fixedly connected with a plurality of on the terminal surface that the adapter is close to the nonrust corrugated steel pipe body, the fixed shell fragment evenly distributed of a plurality of, a plurality of fixed shell fragment are located the inboard of circular fixed slot, and the equal fixedly connected with fixture block of one end of adapter is kept away from to a plurality of fixed shell fragment, the internal surface of nonrust corrugated steel pipe body is equipped with the draw-in groove with fixture block looks adaptation.
A method for assembling a compression type stainless steel corrugated pipe for a gas pipeline comprises the following steps:
s101: bonding the adjusting nut and the rubber ring together by glue, and sleeving the adjusting nut and the rubber ring at one end of the stainless steel corrugated pipe body;
s102: positively rotating the threaded sleeve, and connecting the large-aperture section of the threaded sleeve with the adjusting nut and the rubber ring in a threaded manner until the end part of the stainless steel corrugated pipe body is exposed;
s103: placing a plurality of elastic sheets of the adapter inside a stainless steel corrugated pipe body, rotating the adapter to enable clamping blocks on the elastic sheets to be placed in clamping grooves in the inner surface of the stainless steel corrugated pipe body, then spraying sealant in the circular fixing groove, and fixing the end part of the stainless steel corrugated pipe body in the circular fixing groove;
s104: the threaded sleeve is rotated in the opposite direction, so that the small-bore section of the threaded sleeve is in threaded connection with the adapter, the adjusting nut is rotated to drive the rubber ring to rotate towards one side of the adapter until the rubber ring is in contact with the end face of the adapter, one end, away from the adjusting nut, of the rubber ring is arranged in a gap formed between the threaded sleeve and the adapter, and the connecting end of the stainless steel corrugated pipe body is tightly pressed;
s105: and the adapter is in threaded connection with the end to be connected.
According to the technical scheme, the invention has the beneficial effects that: set up adjusting nut on the nonrust corrugated steel pipe body, fixedly connected with rubber circle on the adjusting nut, nonrust corrugated steel pipe body and adapter fixed connection, and simultaneously, threaded sleeve's one end and adapter threaded connection, threaded sleeve's the other end and adjusting nut and rubber circle threaded connection, through rotatory adjusting nut, make adjusting nut drive rubber circle rotate to one side of adapter, until carrying out in close contact with the terminal surface of adapter, compress tightly and seal the junction of adapter and nonrust corrugated steel pipe body, prevent effectively that the junction of adapter and nonrust corrugated steel pipe body is fixed unstable and sealed not tight, and take place to leak, then, carry out threaded connection through the adapter with treating the link, it is strong to have the suitability, characteristics easy to assemble.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a flow chart of the method of the present invention.
Reference numerals:
1-stainless steel corrugated pipe body; 2-adjusting the nut; 3-rubber ring; 4-an adapter; 5-a threaded sleeve;
11-a card slot; 41-circular fixing groove; 42-a spring plate; 51-large pore size section; 52-small aperture section;
421-fixture block.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1-fig. 2, this embodiment provides a pressing mode corrugated stainless steel pipe for gas pipeline, including corrugated stainless steel pipe body 1, the cover is equipped with adjusting nut 2 on the corrugated stainless steel pipe body 1, fixed mounting has rubber circle 3 on adjusting nut 2, adjusting nut 2 and rubber circle 3's inside wall and corrugated stainless steel pipe body 1's surface looks adaptation, corrugated stainless steel pipe body 1 has adapter 4 with the one end sealing connection that adjusting nut 2 is close to, the cover is equipped with threaded sleeve 5 on adapter 4, threaded sleeve 5's one end and adapter 4 are close to the one end threaded connection of rubber circle 3, threaded sleeve 5's the other end and adjusting nut 2 and rubber circle 3 threaded connection.
In practical use, the stainless steel corrugated pipe body 1 is provided with the adjusting nut 2, the rubber ring 3 is fixedly connected on the adjusting nut 2, the stainless steel corrugated pipe body 1 is fixedly connected with the adapter 4, meanwhile, one end of the threaded sleeve 5 is in threaded connection with the adapter 4, the other end of the threaded sleeve 5 is in threaded connection with the adjusting nut 2 and the rubber ring 3, the adjusting nut 2 is rotated to drive the rubber ring 3 to rotate towards one side of the adapter 4 until the rubber ring is tightly contacted with the end surface of the adapter 4, the joint of the adapter 4 and the stainless steel corrugated pipe body 1 is compressed and sealed, so that the leakage caused by unstable fixation and untight sealing of the joint of the adapter 4 and the stainless steel corrugated pipe body 1 is effectively prevented, then, carry out threaded connection through adapter 4 and wait that the link has that the suitability is strong, characteristics easy to assemble.
In this embodiment, the threaded sleeve 5 includes large aperture section 51 and small aperture section 52, large aperture section 51 and small aperture section 52 fixed connection and intercommunication each other, large aperture section 51 and adjusting nut 2 and rubber circle 3 threaded connection, small aperture section 52 and adapter 4 are close to the one end threaded connection of rubber circle 3, the length of small aperture section 52 screw thread is less than the length of adapter 4 screw thread, the length of large aperture section 51 screw thread is less than or equal to the length sum of screw thread on adjusting nut 2 and the rubber circle 3, the cross-section of rubber circle 3 is the type of "L" of falling.
In practical use, when the small-bore section 52 is tightly connected with the adapter 4, a certain gap is left between the inner side surface of the large-bore section 51 of the threaded sleeve 5 and the outer side surface of the adapter 4, the adjusting nut 2 pushes the rubber ring 3 to rotate towards one side of the adapter 4, so that one end of the rubber ring 3 far away from the adjusting nut 2 completely enters a gap between the inner side surface of the large-aperture section 51 of the threaded sleeve 5 and the outer side surface of the adapter 4, and pack, realize that rubber circle 3 seals nonrust corrugated steel pipe body 1 with adapter 4's junction completely, prevent that nonrust corrugated steel pipe body 1 from taking place to leak with adapter 4's junction, the medial surface and the lateral surface that 2 one end of adjusting nut was kept away from to rubber circle 3 all are equipped with the screw thread, make rubber circle 3 keep away from 2 one end of adjusting nut respectively with threaded sleeve 5 and adapter 4 threaded connection, be convenient for rubber circle 3 get into the space between the medial surface of 5 big aperture sections 51 of threaded sleeve and adapter 4's the lateral surface.
In this embodiment, circular fixed slot 41 has been seted up on the terminal surface that adapter 4 is close to nonrust corrugated steel pipe body 1, and nonrust corrugated steel pipe body 1 is arranged in circular fixed slot 41 to through sealed gluey embedment, guarantee the leakproofness of being connected between nonrust corrugated steel pipe body 1 and the circular fixed slot 41.
In this implementation, the fixed shell fragment 42 of fixedly connected with a plurality of on the terminal surface that adapter 4 is close to nonrust corrugated steel pipe body 1, the fixed shell fragment 42 evenly distributed of a plurality of, the fixed shell fragment 42 of a plurality of is located the inboard of circular fixed slot 41, the equal fixedly connected with fixture block 421 of one end that adapter 4 was kept away from to the fixed shell fragment 42 of a plurality of, the internal surface of nonrust corrugated steel pipe body 1 is equipped with the draw-in groove 11 with fixture block 421 looks adaptation.
In the in-service use, through arranging fixture block 421 in draw-in groove 11, not only strengthen the fixity that corrugated steel pipe body 1 and adapter 4 are connected, moreover, at first arrange fixture block 421 in draw-in groove 11, the position of the fixed corrugated steel pipe body 1 of being convenient for avoids carrying out sealed coating of gluing through manual support, avoids waiting for the dry run of sealed glue through manual support.
Referring to fig. 3, an assembling method of a compression type stainless steel corrugated pipe for a gas pipeline includes the following steps:
s101: bonding the adjusting nut 2 and the rubber ring 3 together by glue, and sleeving the adjusting nut 2 and the rubber ring 3 at one end of the stainless steel corrugated pipe body 1;
s102: the threaded sleeve 5 is rotated in the forward direction, and the large-aperture section 51 of the threaded sleeve 5 is in threaded connection with the adjusting nut 2 and the rubber ring 3 until the end part of the stainless steel corrugated pipe body 1 is exposed;
s103: placing a plurality of elastic sheets 42 of the adapter 4 in the stainless steel corrugated pipe body 1, rotating the adapter 4 to enable the clamping blocks 421 on the plurality of elastic sheets 42 to be placed in the clamping grooves 11 on the inner surface of the stainless steel corrugated pipe body 1, then spraying sealant in the circular fixing grooves 41, and fixing the end parts of the stainless steel corrugated pipe body 1 in the circular fixing grooves 41;
s104: the threaded sleeve 5 is rotated in the opposite direction, so that the small-bore section 52 of the threaded sleeve 5 is in threaded connection with the adapter 4, the adjusting nut 2 is rotated, the adjusting nut 2 drives the rubber ring 3 to rotate towards one side of the adapter 4 until the rubber ring 3 is contacted with the end face of the adapter 4, one end, far away from the adjusting nut 2, of the rubber ring 3 is arranged in a gap formed between the threaded sleeve 5 and the adapter 4, and the connecting end of the stainless steel corrugated pipe body 1 is compressed;
s105: and the adapter 4 is in threaded connection with the end to be connected.
In practical use, a certain gap is reserved between the inner surface of the adjusting nut 2 and the outer surface of the stainless steel corrugated pipe, so that the adjusting nut can be conveniently connected with and move along the large-aperture section 51 of the threaded sleeve 5, the inner surface of the rubber ring 3 is matched with the outer surface of the stainless steel corrugated pipe body 1, the outer surface of the rubber ring 3 is provided with external threads for being in threaded connection with the large-aperture section 51 of the threaded sleeve 5, after the adjusting nut 2 and the rubber ring 3 are sleeved at one end of the stainless steel corrugated pipe body 1, the threaded sleeve 5 is firstly in threaded connection with the adjusting nut 2, then a plurality of elastic sheets 42 are arranged on the inner side of the stainless steel corrugated pipe body 1, the clamping block 421 is arranged in the clamping groove 11 in the stainless steel corrugated pipe body 1, the primary fixing of the stainless steel corrugated pipe body 1 and the adapter 4 is completed, meanwhile, the end part of the stainless steel corrugated pipe body 1 is arranged in the circular fixing groove 41, and the sealing glue is coated in the circular fixing groove 41, to nonrust corrugated steel pipe body 1 and 4 sealing connection of adapter, reverse direction rotation threaded sleeve 5, make threaded sleeve 5 's aperture section 52 and 4 threaded connection of adapter, realize the dual fixed between adapter 4 and the nonrust corrugated steel pipe body 1, rotatory adjusting nut 2, the gap that forms between threaded sleeve 5 and adapter 4 is arranged in to the one end that adjusting nut 2 was kept away from to rubber circle 3, compress tightly nonrust corrugated steel pipe body 1's link, the realization is to the double sealing of nonrust corrugated steel pipe body 1 and 4 links of adapter, strengthen fixity and leakproofness, finally, carry out threaded connection through adapter 4 and the link of treating, it is strong to have the suitability, characteristics easy to assemble.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (3)
1. The utility model provides a pressing mode corrugated stainless steel pipe for gas pipeline, including corrugated stainless steel pipe body (1), a serial communication port, the cover is equipped with adjusting nut (2) on corrugated stainless steel pipe body (1), fixed mounting has rubber circle (3) on adjusting nut (2), the inside wall of adjusting nut (2) and rubber circle (3) and the surface looks adaptation of corrugated stainless steel pipe body (1), corrugated stainless steel pipe body (1) and the one end sealing connection that adjusting nut (2) are close to have adapter (4), the cover is equipped with threaded sleeve pipe (5) on adapter (4), the one end of threaded sleeve pipe (5) and the one end threaded connection that adapter (4) are close to rubber circle (3), the other end and adjusting nut (2) and rubber circle (3) threaded connection of threaded sleeve pipe (5);
a circular fixing groove (41) is formed in the end face, close to the stainless steel corrugated pipe body (1), of the adapter (4), and the stainless steel corrugated pipe body (1) is placed in the circular fixing groove (41) and is encapsulated through sealant;
fixed shell fragment (42) of fixedly connected with a plurality of on adapter (4) is close to the terminal surface of nonrust corrugated steel pipe body (1), fixed shell fragment (42) evenly distributed of a plurality of, fixed shell fragment (42) of a plurality of are located the inboard of circular fixed slot (41), the equal fixedly connected with fixture block (421) of one end that adapter (4) were kept away from to fixed shell fragment (42) of a plurality of, the internal surface of nonrust corrugated steel pipe body (1) is equipped with draw-in groove (11) with fixture block (421) looks adaptation.
2. The compression type stainless steel corrugated pipe for the gas pipeline is characterized in that the threaded sleeve (5) comprises a large-aperture section (51) and a small-aperture section (52), the large-aperture section (51) and the small-aperture section (52) are fixedly connected and communicated with each other, the large-aperture section (51) is in threaded connection with the adjusting nut (2) and the rubber ring (3), the small-aperture section (52) is in threaded connection with one end, close to the rubber ring (3), of the adapter (4), the length of the thread of the small-aperture section (52) is smaller than that of the thread of the adapter (4), the length of the thread of the large-aperture section (51) is smaller than or equal to the sum of the lengths of the threads on the adjusting nut (2) and the rubber ring (3), and the cross section of the rubber ring (3) is of an inverted L shape.
3. The assembling method of the compression type stainless steel corrugated pipe for the gas pipeline is characterized by comprising the following steps of:
s101: the adjusting nut (2) is bonded with the rubber ring (3) through glue, and the adjusting nut (2) and the rubber ring (3) are sleeved at one end of the stainless steel corrugated pipe body (1);
s102: positively rotating the threaded sleeve (5), and connecting the large-aperture section (51) of the threaded sleeve (5) with the adjusting nut (2) and the rubber ring (3) in a threaded manner until the end part of the stainless steel corrugated pipe body (1) is exposed;
s103: placing a plurality of elastic sheets (42) of the adapter (4) in the stainless steel corrugated pipe body (1), rotating the adapter (4) to enable clamping blocks (421) on the plurality of elastic sheets (42) to be placed in clamping grooves (11) in the inner surface of the stainless steel corrugated pipe body (1), then spraying sealant in the circular fixing grooves (41), and fixing the end portions of the stainless steel corrugated pipe body (1) in the circular fixing grooves (41);
s104: the threaded sleeve (5) is rotated in the opposite direction, so that the small-bore section (52) of the threaded sleeve (5) is in threaded connection with the adapter (4), the adjusting nut (2) is rotated, the adjusting nut (2) drives the rubber ring (3) to rotate towards one side of the adapter until the rubber ring (3) is in contact with the end face of the adapter (4), one end, far away from the adjusting nut (2), of the rubber ring (3) is placed in a gap formed between the threaded sleeve (5) and the adapter (4), and the connecting end of the stainless steel corrugated pipe body (1) is compressed;
s105: and the connector is in threaded connection with the end to be connected through the adapter (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451409.0A CN111457173B (en) | 2020-05-25 | 2020-05-25 | Compression type stainless steel corrugated pipe for gas pipeline and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451409.0A CN111457173B (en) | 2020-05-25 | 2020-05-25 | Compression type stainless steel corrugated pipe for gas pipeline and assembling method thereof |
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| Publication Number | Publication Date |
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| CN111457173A CN111457173A (en) | 2020-07-28 |
| CN111457173B true CN111457173B (en) | 2021-11-16 |
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| CN202010451409.0A Active CN111457173B (en) | 2020-05-25 | 2020-05-25 | Compression type stainless steel corrugated pipe for gas pipeline and assembling method thereof |
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Families Citing this family (1)
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| CN114076239B (en) * | 2021-11-18 | 2023-12-22 | 东莞市前锦信息科技有限公司 | Adaptor with multi-angle assembly function for PA66 water inlet pipe |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191508210A (en) * | 1915-06-02 | 1915-10-21 | Albert Edward Melhuish | Improvements in Washers for Hose Couplings. |
| CN2152129Y (en) * | 1993-03-18 | 1994-01-05 | 开泰制管股份有限公司 | Pipe joint |
| JP4437203B2 (en) * | 2004-03-30 | 2010-03-24 | 新和産業株式会社 | Metal bellows pipe fitting |
| JP5297689B2 (en) * | 2007-05-10 | 2013-09-25 | 株式会社サンコー | Corrugated fitting |
| CN201502811U (en) * | 2009-09-08 | 2010-06-09 | 林仁国 | Gas corrugated pipe quick coupling |
| KR20110031762A (en) * | 2009-09-21 | 2011-03-29 | 동아금속주름관(주) | Connecting device of spiral pipe |
| CN105465507B (en) * | 2016-01-14 | 2017-09-29 | 宁波索立管业有限公司 | A kind of compression type corrugated stainless steel tubing and its assemble method for gas pipeline |
| CN208935616U (en) * | 2018-10-17 | 2019-06-04 | 杭州万全金属软管有限公司 | A kind of anti-electrical breakdown socket attachment device of combustion gas stainless steel corrugated flexible hose |
| CN109140088A (en) * | 2018-10-17 | 2019-01-04 | 杭州万全金属软管有限公司 | A kind of anti-electrical breakdown socket attachment device of combustion gas stainless steel corrugated flexible hose |
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