CN113483174B - Flange plate - Google Patents
Flange plate Download PDFInfo
- Publication number
- CN113483174B CN113483174B CN202110848186.6A CN202110848186A CN113483174B CN 113483174 B CN113483174 B CN 113483174B CN 202110848186 A CN202110848186 A CN 202110848186A CN 113483174 B CN113483174 B CN 113483174B
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- groove
- flange
- plate
- locking
- hole
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- 238000009434 installation Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a flange plate, which comprises a male flange and a female flange, and is characterized in that a first mounting groove is arranged at the left end of the female flange, a radial convex edge used for extending into the first mounting groove is arranged on the outer side of the male flange, a second mounting groove for extending the right end of the male flange is arranged at the right end of the first mounting groove in the female flange, an annular locking groove is arranged on the outer side of the circumference close to the right end of the male flange, a first sliding groove extending rightwards and having an opening at the left end is arranged at the left end of the female flange, a second sliding groove extending rightwards and having an opening at the left end is arranged on the right end surface of the first mounting groove, a third sliding groove communicated with the second mounting groove is arranged in the female flange along the radial direction of the female flange, a locking plate is connected in the third sliding groove in a sliding manner along the radial direction of the female flange, a first locking pin component connected with the locking plate is arranged in the first sliding groove, and a second locking pin component connected with the locking plate is arranged in the second sliding groove; the flange plate is simple in structure and convenient to disassemble and assemble.
Description
Technical Field
The invention belongs to the field of pipeline connecting devices, and particularly relates to a flange plate.
Background
The flange is a connecting tool, and the flange connection refers to the detachable connection of a group of combined sealing structures formed by the mutual connection of the flange, a gasket and a bolt. The method is widely applied to industries such as building industry, urban water supply, boiler pressure containers, petroleum industry, gas supply, chemical industry, food industry, fire protection, pharmaceutical industry, power stations, water conservancy, heating ventilation and the like. The existing flange connection is that two pipelines, pipe fittings or equipment are respectively fixed on a flange plate, a flange pad is added between the two flange plates and the two flange plates are fastened together by bolts to complete the connection. In the connection mode, because the number of the fixing bolts is large, the operation steps during flange connection are complicated, time and labor are wasted, the construction period is long, and the investment is large, so that further improvement is greatly needed.
Disclosure of Invention
The invention aims to provide a flange plate which is simple in structure and convenient to disassemble and assemble.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a flange plate, includes public flange and female flange, the left end of female flange is equipped with first mounting groove, the outside of public flange is equipped with and is used for stretching into the radial chimb in the first mounting groove, the right-hand member at first mounting groove in the female flange is equipped with the second mounting groove that the right-hand member that supplies public flange stretches into, public flange is equipped with the annular locked groove in the circumference outside that is close to the right-hand member, the left end of female flange is equipped with right extension and left end open-ended first spout, the right-hand member face of first mounting groove is equipped with right extension and left end open-ended second spout, radially be equipped with the third spout with second mounting groove intercommunication in the female flange, the radial sliding connection along female flange in the third spout has the locking plate, be equipped with the first lockpin subassembly of being connected with the locking plate in the first spout, be equipped with the second lockpin subassembly of being connected with the locking plate in the second spout.
Furthermore, when the male flange is connected with the female flange, the right end of the male flange is inserted into the second mounting groove, the radial convex edge is inserted into the first mounting groove to push the second lock pin assembly to move rightwards to a locking position, and the core-near end of the lock plate is inserted into the annular lock groove; when the male flange and the female flange are controlled to be disconnected, the first locking pin component is controlled to move rightwards to the unlocking position, and the proximal end of the locking plate is separated from the annular locking groove.
Furthermore, the first lock pin assembly comprises a first lock plate, the cross sections of the first sliding chute and the first lock plate are square, the first lock plate is connected in the first sliding chute in a sliding mode along the left-right direction, and the lock plate is provided with an outer slot hole through which the first lock plate penetrates; a first spring is arranged between the right end of the first sliding chute and the right end of the first locking plate and used for forcing the first locking plate to move leftwards; an outer groove is formed in the outer side face of the first lock plate, an inner groove opposite to the outer groove is formed in the inner side face of the first lock plate, and an outer inclined plane is formed in the left side of the outer groove;
when the second lock pin component moves rightwards to a locking position, an outer groove edge of the outer groove hole enters an outer groove, and an inner groove edge of the outer groove hole is separated from an inner groove; when the first lock plate moves rightwards to the unlocking position, the outer inclined surface is matched with the outer groove edge of the outer groove hole to push the proximal end of the lock plate to be separated from the annular lock groove, the outer groove edge of the outer groove hole is positioned on the outer side surface of the first lock plate, and the inner groove edge of the outer groove hole enters the inner groove.
Furthermore, the second lock pin assembly comprises a second lock plate, the cross sections of the second sliding chute and the second lock plate are square, the two lock plates are connected in the second sliding chute in a sliding mode along the left-right direction, and the lock plate is arranged in an inner groove hole through which the second lock plate penetrates; a second spring is arranged between the right end of the second sliding chute and the right end of the second locking plate and used for forcing the second locking plate to move leftwards; the outer side surface of the second lock plate is provided with two outer grooves, the inner side surface of the second lock plate is provided with two inner grooves opposite to the two outer grooves, and the left sides of the two inner grooves are provided with inner inclined planes;
when the second lock plate moves rightwards to a locking position, the inner inclined plane is matched with the inner two groove edges of the inner slotted hole to push the proximal end of the lock plate to be inserted into the annular lock groove, the outer two groove edges of the inner slotted hole enter the outer two grooves, and the inner two groove edges of the inner slotted hole are separated from the inner two grooves; when the first lock plate moves rightwards to the unlocking position, the outer two groove edges of the inner groove hole are positioned on the outer side surface of the second lock plate, and the inner two groove edges of the inner groove hole enter the inner two grooves.
Furthermore, the right end of the first locking plate is provided with a first positioning hole, and the left end of the first spring extends into the first positioning hole.
Furthermore, a second positioning hole is formed in the right end of the second locking plate, and the left end of the second spring extends into the second positioning hole.
Furthermore, a first through hole penetrating through the male flange from left to right is formed in the male flange, a second through hole penetrating through the female flange from left to right is formed in the female flange, and when the male flange is connected with the female flange, the first through hole and the second through hole are located at the same axial position.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. the second locking plate is used for pushing the locking plate to move, so that the locking plate can be inserted into the annular locking groove, the male flange can be fixed on the female flange, and the male flange and the female flange can be installed simply and quickly;
2. the male flange is pushed to the female flange to push the second locking plate to control the locking plate to be inserted into the annular locking groove, so that the male flange and the female flange can be simply and quickly installed
3. The locking plate can be withdrawn from the annular locking groove by pressing the first locking plate to move, the male flange and the female flange are automatically separated, the male flange and the female flange are also simply and quickly detached, and manpower is greatly reduced.
Drawings
FIG. 1 is a cross-sectional view of a male flange of the present invention;
FIG. 2 is a cross-sectional view of the female flange of the present invention;
FIG. 3 is a cross-sectional view of the male flange of the present invention just inserted into the female flange;
FIG. 4 is a cross-sectional view of the male flange of the present invention pushed into the female flange;
FIG. 5 is a cross-sectional view of the male and female flanges of the present invention after locking;
FIG. 6 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5 in accordance with the present invention;
fig. 8 is an external view of the first locking plate of the present invention.
Detailed Description
Referring to fig. 1-8, a flange plate includes a male flange 1 and a female flange 2, a first mounting groove 202 is disposed at a left end of the female flange 2, a radial flange 102 for extending into the first mounting groove 202 is disposed at an outer side of the male flange 1, a second mounting groove 201 for extending a right end of the male flange 1 is disposed at a right end of the first mounting groove 202 in the female flange 2, an annular locking groove 1a is disposed at a circumferential outer side near the right end of the male flange 1, a first sliding groove 21 extending rightward and having an opening at a left end is disposed at a left end of the female flange 2, a second sliding groove 22 extending rightward and having an opening at a left end is disposed at a right end of the first mounting groove 202, a third sliding groove 23 communicated with the second mounting groove 201 is disposed in the female flange 2 along a radial direction of the female flange 2, a locking plate 5 is slidably connected to the third sliding groove 23, a first locking pin assembly connected to the first sliding groove 21 and disposed in the second sliding groove 22, a second locking pin assembly connected to the second locking plate 5 is disposed in the second sliding groove 22, and the annular locking groove 202 is inserted into the second locking groove 102, and the annular locking pin assembly is inserted into the second locking groove 201 when the male flange 1 and the female flange 2 are inserted into the annular locking groove 102; when the male flange 1 and the female flange 2 are controlled to be disconnected, the first locking pin assembly is controlled to move rightwards to the unlocking position, and the proximal end of the locking plate 5 is separated from the annular locking groove 1a.
The first lock pin assembly comprises a first lock plate 3, the cross sections of the first sliding groove 21 and the first lock plate 3 are both square, the first lock plate 3 is connected in the first sliding groove 21 in a sliding mode along the left-right direction, and an outer groove hole 51 through which the first lock plate 3 penetrates is formed in the lock plate 5; a first spring 6a is arranged between the right end of the first sliding chute 21 and the right end of the first lock plate 3, and the first spring 6a is used for forcing the first lock plate 3 to move leftwards; an outer groove 3a is formed in the outer side face of the first lock plate 3, an inner groove 3b opposite to the outer groove 3a is formed in the inner side face of the first lock plate, and an outer inclined plane 3a1 is formed in the left side of the outer groove 3 a; when the second lock pin assembly moves to the right to the locking position, the outer slot edge 5d of the outer slot 51 enters the outer slot 3a, and the inner slot edge 5c of the outer slot 51 is separated from the inner slot 3b; when the first lock plate 3 moves to the right to the unlocking position, the outer inclined surface 3a1 cooperates with the outer groove edge 5d of the outer groove hole 51 to push the proximal end of the lock plate 5 to be separated from the annular lock groove 1a, the outer groove edge 5d of the outer groove hole 51 is positioned on the outer side surface of the first lock plate 3, and the inner groove edge 5c of the outer groove hole 51 enters the inner groove 3b.
The second lock pin assembly comprises a second lock plate 4, the cross sections of the second sliding groove 22 and the second lock plate 4 are both square, the two lock plates are connected in the second sliding groove 22 in a sliding mode along the left-right direction, and an inner groove hole 52 through which the second lock plate 4 penetrates is formed in the lock plate 5; a second spring 6b is arranged between the right end of the second sliding chute 22 and the right end of the second locking plate 4, and the second spring 6b is used for forcing the second locking plate 4 to move leftwards; the outer side surface of the second locking plate 4 is provided with two outer grooves 4b, the inner side surface of the second locking plate 4 is provided with two inner grooves 4a opposite to the two outer grooves 4b, and the left sides of the two inner grooves 4a are provided with inner inclined surfaces 4a1; when the second locking plate 4 moves rightwards to the locking position, the inner inclined surface 4a1 is matched with the inner two groove edges 5a of the inner slotted hole 52 to push the proximal end of the locking plate 5 to be inserted into the annular locking groove 1a, the outer two groove edges 5b of the inner slotted hole 52 enter the outer two grooves 4b, and the inner two groove edges 5a of the inner slotted hole 52 are separated from the inner two grooves 4a; when the first lock plate 3 moves to the right to the unlocking position, the outer two slot edges 5b of the inner slot 52 are positioned on the outer side surface of the second lock plate 4, and the inner two slot edges 5a of the inner slot 52 enter the inner two grooves 4a.
The right end of the first lock plate 3 is provided with a first positioning hole 31, and the left end of the first spring 6a extends into the first positioning hole 31. The right end of the second locking plate 4 is provided with a second positioning hole 41, and the left end of the second spring 6b extends into the second positioning hole 41. The male flange 1 is internally provided with a first through hole 101 which penetrates through the male flange from left to right, the female flange 2 is internally provided with a second through hole 203 which penetrates through the female flange from left to right, and when the male flange 1 is connected with the female flange 2, the first through hole 101 and the second through hole 203 are in coaxial positions.
As shown in fig. 1 and 2, the simple structure of the present invention is that when the flanges are required to be installed together, the right end of the male flange 1 is firstly pushed into the second installation groove 201 of the female flange 2, and simultaneously the radial flange 102 is pushed into the first installation groove 202, when the radial flange 102 of the male flange 1 contacts the left end of the second locking plate 4, the male flange 1 is continuously pushed towards the female flange 2 against the second spring 6b, the second locking plate 4 is pushed to move to the right, when the inner inclined surface 4a1 just touches the inner second groove edge 5a of the inner groove 52 on the locking plate 5, the outer second groove 4b moves to the position of the outer second groove edge 5b of the inner groove 52, so that the second locking plate 4 continues to move to the right to the locking position, the inner inclined surface 4a1 pushes the locking plate 5 to be inserted into the annular locking groove 1a, the outer two groove edges 5b of the inner groove hole 52 enter the outer two grooves 4b, the inner two groove edges 5a of the inner groove hole 52 are separated from the inner two grooves 4a, the outer one groove edge 5d of the outer groove hole 51 enters the outer one groove 3a, the inner one groove edge 5c of the outer groove hole 51 is separated from the inner one groove 3b and is abutted against the inner side surface of the first locking plate 3, the locking plate 5 is positioned at the position shown in fig. 4 leftwards by the first locking plate 3 under the action of the first spring 6a, at the moment, the locking plate 5 enters the annular locking groove 1a, the male flange 1 is loosened, and the male flange 1 is retreated to the position shown in fig. 5 under the action of the second spring 6b, and the installation of the flange plate is completed.
When the flange needs to be disassembled and the pressure in the pipeline needs to be reduced to 0, firstly, the first spring 6a needs to be overcome to push the first locking plate 3 rightwards, when the outer inclined surface 3a1 just touches the outer groove edge 5d of the outer groove hole 51 on the locking plate 5, the inner groove 3b moves to the position facing the inner groove edge 5c of the outer groove hole 51, the first locking plate 3 continues to move rightwards to the unlocking position, the outer inclined surface 3a1 pushes the locking plate 5 to be separated from the annular locking groove 1a, the outer groove edge 5b of the inner groove hole 52 is separated from the outer groove 4b and is abutted on the outer side surface of the second locking plate 4, the inner groove edge 5a of the inner groove hole 52 enters the inner groove edge 4a, the outer groove edge 5d of the outer groove hole 51 is separated from the outer groove edge 3a, the inner groove edge 5c of the outer groove hole 51 enters the inner groove edge 3b, under the action of the second spring 6b, the second locking plate 4 locates the locking plate 5 leftwards at the annular position shown in the figure 1, at this moment, the locking plate 5 withdraws from the locking groove 1a, and the flange is disassembled.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A flange plate comprises a male flange and a female flange, and is characterized in that a first mounting groove is formed in the left end of the female flange, a radial convex edge used for extending into the first mounting groove is formed in the outer side of the male flange, a second mounting groove used for extending into the right end of the male flange is formed in the right end of the first mounting groove in the female flange, an annular locking groove is formed in the outer side of the circumference close to the right end of the male flange, a first sliding groove extending rightwards and provided with an opening at the left end is formed in the left end of the female flange, a second sliding groove extending rightwards and provided with an opening at the left end is formed in the right end face of the first mounting groove, a third sliding groove communicated with the second mounting groove is formed in the female flange along the radial direction, a locking plate is connected to the third sliding groove in a sliding mode along the radial direction of the female flange, a first locking pin component connected with the locking plate is arranged in the first sliding groove, and a second locking pin component connected with the locking plate is arranged in the second sliding groove;
when the male flange is connected with the female flange, the right end of the male flange is inserted into the second mounting groove, the radial convex edge is inserted into the first mounting groove to push the second lock pin assembly to move rightwards to a locking position, and the proximal end of the lock plate is inserted into the annular lock groove; when the male flange and the female flange are controlled to be disconnected, the first locking pin component is controlled to move rightwards to an unlocking position, and the proximal end of the locking plate is separated from the annular locking groove;
the first lock pin assembly comprises a first lock plate, the cross sections of the first sliding chute and the first lock plate are square, the first lock plate is connected in the first sliding chute in a sliding mode along the left-right direction, and an outer slot hole for the first lock plate to penetrate through is formed in the lock plate; a first spring is arranged between the right end of the first sliding chute and the right end of the first locking plate and used for forcing the first locking plate to move leftwards; an outer groove is formed in the outer side face of the first lock plate, an inner groove opposite to the outer groove is formed in the inner side face of the first lock plate, and an outer inclined plane is arranged on the left side of the outer groove; when the second lock pin component moves rightwards to a locking position, an outer groove edge of the outer groove hole enters an outer groove, and an inner groove edge of the outer groove hole is separated from an inner groove; when the first lock plate moves rightwards to the unlocking position, the outer inclined plane is matched with the outer groove edge of the outer groove hole to push the proximal end of the lock plate to be separated from the annular lock groove, the outer groove edge of the outer groove hole is positioned on the outer side surface of the first lock plate, and the inner groove edge of the outer groove hole enters the inner groove;
the second lock pin assembly comprises a second lock plate, the cross sections of the second sliding chute and the second lock plate are square, the two lock plates are connected into the second sliding chute in a sliding mode along the left-right direction, and the lock plate is provided with an inner groove hole through which the second lock plate penetrates; a second spring is arranged between the right end of the second sliding chute and the right end of the second locking plate and used for forcing the second locking plate to move leftwards; the outer side surface of the second locking plate is provided with two outer grooves, the inner side surface of the second locking plate is provided with two inner grooves opposite to the two outer grooves, and the left sides of the two inner grooves are provided with inner inclined planes; when the second lock plate moves rightwards to a locking position, the inner inclined plane is matched with the inner two groove edges of the inner groove hole to push the proximal end of the lock plate to be inserted into the annular lock groove, the outer two groove edges of the inner groove hole enter the outer two grooves, and the inner two groove edges of the inner groove hole are separated from the inner two grooves; when the first lock plate moves rightwards to the unlocking position, the outer two groove edges of the inner groove hole are positioned on the outer side surface of the second lock plate, and the inner two groove edges of the inner groove hole enter the inner two grooves.
2. The flange plate of claim 1, wherein the right end of the first locking plate is provided with a first positioning hole, and the left end of the first spring extends into the first positioning hole.
3. The flange plate according to claim 1, wherein the right end of the second locking plate is provided with a second positioning hole, and the left end of the second spring extends into the second positioning hole.
4. The flange plate of claim 1, wherein a first through hole is formed in the male flange and extends through the male flange from left to right, and a second through hole is formed in the female flange and extends through the female flange from left to right, the first through hole and the second through hole being positioned coaxially when the male flange and the female flange are coupled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110848186.6A CN113483174B (en) | 2021-07-27 | 2021-07-27 | Flange plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110848186.6A CN113483174B (en) | 2021-07-27 | 2021-07-27 | Flange plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113483174A CN113483174A (en) | 2021-10-08 |
| CN113483174B true CN113483174B (en) | 2022-12-09 |
Family
ID=77942729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110848186.6A Active CN113483174B (en) | 2021-07-27 | 2021-07-27 | Flange plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113483174B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052045A (en) * | 1976-07-29 | 1977-10-04 | Billy Joe Shaddix | Alignment of flanges |
| CN203404532U (en) * | 2013-08-24 | 2014-01-22 | 赵华勇 | Hard tube quick coupling |
| CN107420668A (en) * | 2016-05-24 | 2017-12-01 | 珠海巨涛海洋石油服务有限公司 | A kind of profound submarine oil-transportation tracheae self-locking connecting device and its installation method |
| CN108302268A (en) * | 2018-04-03 | 2018-07-20 | 南京知行管业有限公司 | A kind of anti-theft type table tool connecting tube |
| CN208074338U (en) * | 2018-01-19 | 2018-11-09 | 嘉善爱翔金属制品有限公司 | A kind of ring flange |
| CN208204273U (en) * | 2018-05-24 | 2018-12-07 | 重庆市建设工程质量监督总站 | A kind of pipeline based on BIM |
| CN212203491U (en) * | 2020-05-11 | 2020-12-22 | 沈阳哈维尔表面工程技术有限公司 | Build-up welding wear-resisting corrosion-resisting pipeline |
| CN213145687U (en) * | 2020-08-07 | 2021-05-07 | 青岛亨通风管制造安装有限公司 | Ventilating duct convenient to connect and install |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3548258B1 (en) * | 2017-03-30 | 2022-05-04 | IPS, Corporation - Weld-On Division | Pipe fitting apparatus and methods |
-
2021
- 2021-07-27 CN CN202110848186.6A patent/CN113483174B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052045A (en) * | 1976-07-29 | 1977-10-04 | Billy Joe Shaddix | Alignment of flanges |
| CN203404532U (en) * | 2013-08-24 | 2014-01-22 | 赵华勇 | Hard tube quick coupling |
| CN107420668A (en) * | 2016-05-24 | 2017-12-01 | 珠海巨涛海洋石油服务有限公司 | A kind of profound submarine oil-transportation tracheae self-locking connecting device and its installation method |
| CN208074338U (en) * | 2018-01-19 | 2018-11-09 | 嘉善爱翔金属制品有限公司 | A kind of ring flange |
| CN108302268A (en) * | 2018-04-03 | 2018-07-20 | 南京知行管业有限公司 | A kind of anti-theft type table tool connecting tube |
| CN208204273U (en) * | 2018-05-24 | 2018-12-07 | 重庆市建设工程质量监督总站 | A kind of pipeline based on BIM |
| CN212203491U (en) * | 2020-05-11 | 2020-12-22 | 沈阳哈维尔表面工程技术有限公司 | Build-up welding wear-resisting corrosion-resisting pipeline |
| CN213145687U (en) * | 2020-08-07 | 2021-05-07 | 青岛亨通风管制造安装有限公司 | Ventilating duct convenient to connect and install |
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| Publication number | Publication date |
|---|---|
| CN113483174A (en) | 2021-10-08 |
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Effective date of registration: 20221116 Address after: 400039 High tech Industrial Development Zone, Dazu District, Chongqing (No. 66, Wanhui Avenue) Applicant after: Chongqing Dayexin Auto Parts Co.,Ltd. Address before: 317600 Yuhuan purification group, Chumen section, Yuhuan science and Technology Industrial Park, Taizhou City, Zhejiang Province Applicant before: Liu Qianqian |
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