CN111536337B - Linkage locking flange - Google Patents
Linkage locking flange Download PDFInfo
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- CN111536337B CN111536337B CN202010390106.2A CN202010390106A CN111536337B CN 111536337 B CN111536337 B CN 111536337B CN 202010390106 A CN202010390106 A CN 202010390106A CN 111536337 B CN111536337 B CN 111536337B
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- sleeve
- flange
- clamping
- wall
- arc
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
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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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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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 provides a linkage locking flange which comprises a flange sleeve, a middle sealing unit, a clamping unit and a side sealing unit, wherein the middle sealing unit is arranged on the flange sleeve; the flange can solve the problems that the connection strength between the flange and the pipe fitting is poor, the pipe fitting and the flange slide relatively due to the external pressure or the pressure in the pipe fitting, and the pipe fitting is further loosened or falls off; b, the sealing performance between two pipe fittings connected by the existing flange is poor; because the interfaces of two pipe fittings are not parallel and level, the pipe fittings easily cause the leakage and other problems when being butted by flanges.
Description
Technical Field
The invention relates to the technical field of connecting pieces, in particular to a linkage locking flange.
Background
A flange, also known as a flange collar or flange. The flange is a part for connecting the shaft and the shaft or the pipeline and is used for connecting pipe ends; the 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. The flange connection is convenient to use and can bear larger pressure. Therefore, the flange connection is an important connection mode for pipeline construction.
However, the existing flange mainly has the following problems in the process of connecting two pipes; a, the connection strength between the flange and the pipe fitting is poor, and the pipe fitting and the flange slide relatively under the pressure of external pressure or air pressure in the pipe fitting, so that the pipe fitting is further loosened or falls off; b, the sealing performance between two pipe fittings connected by the existing flange is poor; because the interfaces of the two pipe fittings are not parallel and level, the pipe fittings are easy to leak when butted by the flanges.
The connecting strength between the pipe fitting and the flange is improved, and meanwhile, the sealing performance of the pipe fitting is ensured; the invention provides a linkage locking flange.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme that the linkage locking flange comprises a flange sleeve, a middle sealing unit, a clamping unit and a side sealing unit; the middle sealing units are uniformly arranged on the outer wall of the middle part of the flange sleeve along the circumferential direction of the flange sleeve, annular grooves are formed in the outer walls of the two ends of the flange sleeve, annular holes are formed in the upper ends of the annular grooves of the flange sleeve, and fixing holes are uniformly formed in the outer wall of the upper ends of the annular holes; the side sealing units are symmetrically arranged at two ends of the flange sleeve; the clamping units are respectively matched with the two ends of the flange sleeve in a clamping machine mode; wherein:
the clamping unit comprises a clamping bolt, a movable sleeve, a clamping sleeve, a pressing column, a pressing fixture block and an execution spring; the clamping bolt is arranged in the fixing hole of the flange sleeve; the movable sleeve is of an annular structure, the interior of the movable sleeve is uniformly provided with a compression column in a movable fit mode, the bottom end of the compression column is provided with a compression fixture block, the outer wall of the compression column is sleeved with an execution spring, the clamping sleeve is arranged on the outer wall of the right end of the movable sleeve, the outer wall of the clamping sleeve is uniformly provided with clamping holes along the axis direction of the clamping sleeve, and the clamping holes in the clamping sleeve are matched with the clamping bolts; the movable sleeve is pushed in to enable the compression column to be matched with the pressing ring sleeve to extrude, fix and attach the compression fixture block arranged at the lower end of the compression column to the outer wall of the pipe fitting, so that the connection strength between the pipe fitting and the pipe fitting is increased; further ensuring that the factors such as air pressure and the like in the pipe fitting can not fall off from the pipe fitting quickly.
The middle sealing unit comprises an arc-shaped plate, an arc-shaped chuck, a pressure spring, a pressing column, a limiting chuck and a return spring; the side wall of the arc-shaped plate is uniformly provided with balls, the arc-shaped plate is arranged in the middle of the flange sleeve in a sliding fit mode, the lower end of the arc-shaped plate is provided with an arc-shaped chuck, and the lower end face of the arc-shaped plate is connected with the inner wall of the flange sleeve through uniformly arranged pressure springs; the limiting clamping heads are symmetrically arranged inside the flange sleeve in a sliding fit mode, and one end of each limiting clamping head is connected with the inner wall of the flange sleeve through a reset spring; the top end of the limiting chuck is of an arc-shaped structure, and the limiting chuck is matched with the arc-shaped groove of the pressing column; the middle sealing unit is used for enabling the arc-shaped chuck at the lower end to be attached and sealed with the interfaces of the two pipe fittings by operating the pressing column, so that the sealing performance of the pipe fittings is promoted; the sealing performance of the butt joint of the ports of the two pipe fittings which are not parallel and level is ensured.
The side sealing unit comprises a jacking spring, a pressing ring sleeve, a T-shaped sleeve, a limiting column and a rubber ring; the pressing ring sleeve is arranged at the side end of the flange sleeve in a sliding fit manner; the end opening of the outer wall of the pressing ring sleeve is of a trapezoidal structure, and the end opening of the inner wall of the pressing ring sleeve is connected with a jacking spring arranged in the flange sleeve; the inner wall of the pressing ring sleeve is provided with a T-shaped sleeve, the limiting columns are uniformly arranged in the cutting grooves in the flange sleeve in an inclined structure, and the rubber ring is sleeved on the outer wall of the limiting columns in a sliding fit mode; the T-shaped sleeve is matched with the rubber ring; the arranged side sealing unit pushes the rubber ring to move along the limiting column through the T-shaped sleeve, so that the lower end face of the rubber ring is attached to and pressed against the outer wall of the pipe fitting, and the sealing property between the pipe fitting and the pipe fitting is improved.
Preferably; the top end of the compression column is of an inclined structure, and the top end of the compression column is provided with a ball in a movable connection mode; the balls are arranged at the top ends of the compression columns in a movable connection mode, so that the compression columns are matched with the pressing ring sleeve; the clamping block and the pipe fitting are convenient to be attached and fixed.
Preferably; the arc chuck is made of rubber; set up the arc chuck into rubber material and can make the arc chuck laminate with the connector of two pipe fittings in the extrusion, guaranteed the leakproofness that the pipe fitting is connected.
Preferably; the pressing fixture block is made of rubber; the friction force between the pressing fixture block and the pipe fitting is increased by arranging the pressing fixture block to be made of rubber; thereby ensuring the connection strength between the pressing fixture block and the pipe fitting.
The middle sealing unit provided by the invention enables the arc-shaped chuck at the lower end to be attached and sealed with the interfaces of the two pipe fittings by operating the pressing column, so that the sealing property of the pipe fittings is promoted; the sealing performance of the butt joint of the ports of the two pipe fittings which are not parallel and level is ensured;
the side sealing unit pushes the rubber ring to move along the limiting column through the T-shaped sleeve, so that the lower end face of the rubber ring is attached to and pressed against the outer wall of the pipe fitting, and the sealing performance between the pipe fitting and the side sealing unit is improved;
thirdly, the movable sleeve is pushed in to enable the compression column to be matched with the pressing ring sleeve to extrude, fix and attach the compression fixture block arranged at the lower end of the compression column to the outer wall of the pipe fitting, so that the connection strength between the pipe fitting and the pressing sleeve is increased; further ensuring that the factors such as air pressure and the like in the pipe fitting can not fall off from the pipe fitting quickly.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front view in section view of the present invention;
FIG. 2 is a schematic view of the position of M-M of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 1;
fig. 4 is a partial enlarged view of the present invention at B in fig. 1.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.
The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the operator or the convention. Therefore, these terms are defined based on the entire contents of the present specification.
As shown in fig. 1 to 4, a linkage locking flange comprises a flange sleeve 1, a middle sealing unit 2, a clamping unit 3 and a side sealing unit 4; the middle sealing units 2 are uniformly arranged on the outer wall of the middle part of the flange sleeve 1 along the circumferential direction of the flange sleeve, annular grooves are formed in the outer walls of two ends of the flange sleeve 1, annular holes are formed in the upper ends of the annular grooves of the flange sleeve 1, and fixing holes are uniformly formed in the outer wall of the upper ends of the annular holes; the side sealing units 4 are symmetrically arranged at two ends of the flange sleeve 1; the clamping unit 3 is respectively matched with two ends of the flange sleeve 1 in a clamping manner; wherein:
the middle sealing unit 2 comprises an arc-shaped plate 21, an arc-shaped chuck 22, a pressure spring 23, a pressing column 24, a limiting chuck 25 and a return spring 26; the side wall of the arc-shaped plate 21 is uniformly provided with balls, the arc-shaped plate 21 is installed in the middle of the flange sleeve 1 in a sliding fit mode, the arc-shaped chuck 22 is arranged at the lower end of the arc-shaped plate 21, the arc-shaped chuck 22 is made of rubber, and the arc-shaped chuck 22 can be attached to connecting ports of two pipe fittings in an extrusion mode by setting the arc-shaped chuck 22 to be made of rubber, so that the sealing performance of pipe fitting connection is guaranteed; the lower end surface of the arc-shaped plate 21 is connected with the inner wall of the flange sleeve 1 through the uniformly arranged pressure springs 23; the pressing column 24 is arranged on the flange sleeve 1 in a movable fit mode, the lower end of the pressing column 24 is connected with the outer wall of the upper end of the arc plate 21, the outer wall of the pressing column 24 is uniformly provided with arc grooves, the limiting chucks 25 are symmetrically arranged inside the flange sleeve 1 in a sliding fit mode, and one end of each limiting chuck 25 is connected with the inner wall of the flange sleeve 1 through a return spring 26; the top end of the limiting chuck 25 is of an arc-shaped structure, and the limiting chuck 25 is matched with the arc-shaped groove of the pressing column 24; the middle sealing unit 2 is arranged to ensure that the arc-shaped chuck 22 at the lower end is attached and sealed with the interfaces of two pipe fittings by operating the pressing column 24, so that the sealing performance of the pipe fittings is promoted; the sealing performance of the butt joint of the ports of the two pipe fittings which are not parallel and level is ensured.
The side sealing unit 4 comprises a jacking spring 41, a pressing ring sleeve 42, a T-shaped sleeve 43, a limiting column 44 and a rubber ring 45; the pressing ring sleeve 42 is arranged at the side end of the flange sleeve 1 in a sliding fit manner; the outer wall port of the pressing ring sleeve 42 is in a trapezoidal structure, and the inner wall port of the pressing ring sleeve 42 is connected with a jacking spring 41 arranged in the flange sleeve 1; the inner wall of the pressing ring sleeve 42 is provided with a T-shaped sleeve 43, the limiting columns 44 are uniformly arranged in the cutting grooves in the flange sleeve 1 in an inclined structure, and the rubber ring 45 is sleeved on the outer wall of the limiting columns 44 in a sliding fit mode; the T-shaped sleeve 43 is matched with the rubber ring 45; the arranged side sealing unit 4 pushes the rubber ring 45 to move along the limiting column 44 through the T-shaped sleeve 43, so that the lower end face of the rubber ring 45 is attached and pressed with the outer wall of the pipe fitting, and the sealing performance between the pipe fitting and the pipe fitting is improved.
The clamping unit 3 comprises a clamping bolt 31, a movable sleeve 32, a clamping sleeve 33, a pressing column 34, a pressing clamping block 35 and an actuating spring 36; the clamping bolt 31 is arranged in a fixing hole of the flange sleeve 1; the movable sleeve 32 is of an annular structure, the compression columns 34 are uniformly arranged in the movable sleeve 32 in a movable fit mode, the bottom ends of the compression columns 34 are provided with compression fixture blocks 35, the compression fixture blocks 35 are made of rubber, and the friction force between the compression fixture blocks 35 and the pipe fittings is increased by arranging the compression fixture blocks 35 to be made of rubber; thereby ensuring the connection strength between the pressing fixture block 35 and the pipe fitting; the outer wall of the compression column 34 is sleeved with an actuating spring 36, the top end of the compression column 34 is of an inclined structure, balls are arranged at the top end of the compression column 34 in a movable connection mode, and the balls arranged at the top end of the compression column 34 in the movable connection mode promote the compression column 34 to be matched with the pressing ring sleeve 42; the pressing fixture block 35 and the pipe fitting are convenient to be attached and fixed; the clamping sleeve 33 is arranged on the outer wall of the right end of the movable sleeve 32, clamping holes are uniformly formed in the outer wall of the clamping sleeve 33 along the axis direction of the clamping sleeve, and the clamping holes in the clamping sleeve 33 are matched with the clamping bolts 31; the movable sleeve 32 is pushed in to enable the compression column 34 to be matched with the pressing ring sleeve 42 to extrude, fix and attach the compression fixture block 35 arranged at the lower end of the compression column 34 to the outer wall of the pipe fitting, so that the connection strength between the pipe fitting and the pipe fitting is increased; further ensuring that the factors such as air pressure and the like in the pipe fitting can not fall off from the pipe fitting quickly.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A linkage locking flange comprises a flange sleeve (1), a middle sealing unit (2), a clamping unit (3) and a side sealing unit (4); the method is characterized in that: the middle sealing units (2) are uniformly arranged on the outer wall of the middle part of the flange sleeve (1) along the circumferential direction of the flange sleeve, annular grooves are formed in the outer walls of two ends of the flange sleeve (1), an annular hole is formed in the upper end of the annular groove of the flange sleeve (1), and fixing holes are uniformly formed in the outer wall of the upper end of the annular hole; the side sealing units (4) are symmetrically arranged at two ends of the flange sleeve (1); the clamping unit (3) is respectively matched with two ends of the flange sleeve (1) in a clamping manner; wherein:
the clamping unit (3) comprises a clamping bolt (31), a movable sleeve (32), a clamping sleeve (33), a pressing column (34), a pressing clamping block (35) and an execution spring (36); the clamping bolt (31) is arranged in a fixing hole of the flange sleeve (1); the movable sleeve (32) is of an annular structure, the interior of the movable sleeve (32) is uniformly provided with a compression column (34) in a movable fit mode, the bottom end of the compression column (34) is provided with a compression clamping block (35), the outer wall of the compression column (34) is sleeved with an execution spring (36), the clamping sleeve (33) is arranged on the outer wall of the right end of the movable sleeve (32), the outer wall of the clamping sleeve (33) is uniformly provided with clamping holes along the axial direction of the clamping sleeve, and the clamping holes in the clamping sleeve (33) are matched with the clamping bolts (31);
the middle sealing unit (2) comprises an arc-shaped plate (21), an arc-shaped chuck (22), a pressure spring (23), a pressing column (24), a limiting chuck (25) and a return spring (26); the side wall of the arc-shaped plate (21) is uniformly provided with balls, the arc-shaped plate (21) is arranged in the middle of the flange sleeve (1) in a sliding fit mode, the lower end of the arc-shaped plate (21) is provided with an arc-shaped chuck (22), and the lower end face of the arc-shaped plate (21) is connected with the inner wall of the flange sleeve (1) through uniformly arranged pressure springs (23); the pressing column (24) is arranged on the flange sleeve (1) in a movable fit mode, the lower end of the pressing column (24) is connected with the outer wall of the upper end of the arc-shaped plate (21), arc-shaped grooves are uniformly formed in the outer wall of the pressing column (24), the limiting chucks (25) are symmetrically arranged inside the flange sleeve (1) in a sliding fit mode, and one end of the limiting chuck (25) is connected with the inner wall of the flange sleeve (1) through a reset spring (26); the top end of the limiting clamping head (25) is of an arc-shaped structure, and the limiting clamping head (25) is matched with the arc-shaped groove of the pressing column (24).
2. A linking locking flange as claimed in claim 1, wherein: the side sealing unit (4) comprises a jacking spring (41), a pressing ring sleeve (42), a T-shaped sleeve (43), a limiting column (44) and a rubber ring (45); the pressing ring sleeve (42) is arranged at the side end of the flange sleeve (1) in a sliding fit manner; the port of the outer wall of the pressing ring sleeve (42) is of a trapezoidal structure, and the port of the inner wall of the pressing ring sleeve (42) is connected with a jacking spring (41) arranged in the flange sleeve (1); the inner wall of the pressing ring sleeve (42) is provided with a T-shaped sleeve (43), the limiting columns (44) are uniformly arranged in the cutting grooves in the flange sleeve (1) in an inclined structure, and the rubber ring (45) is sleeved on the outer wall of the limiting columns (44) in a sliding fit mode; and T type sleeve (43) and rubber circle (45) mutually support, promote rubber circle (45) through T type sleeve (43) and remove along spacing post (44) for the lower terminal surface of rubber circle (45) and the outer wall of pipe fitting laminate and compress tightly.
3. A linking locking flange as claimed in claim 1, wherein: the top end of the pressing column (34) is of an inclined structure, and balls are arranged at the top end of the pressing column (34) in a movable connection mode.
4. A linking locking flange as claimed in claim 1, wherein: the arc-shaped chuck (22) is made of rubber.
5. A linking locking flange as claimed in claim 1, wherein: the pressing fixture block (35) is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010390106.2A CN111536337B (en) | 2020-05-08 | 2020-05-08 | Linkage locking flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010390106.2A CN111536337B (en) | 2020-05-08 | 2020-05-08 | Linkage locking flange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111536337A CN111536337A (en) | 2020-08-14 |
| CN111536337B true CN111536337B (en) | 2021-09-24 |
Family
ID=71973661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010390106.2A Active CN111536337B (en) | 2020-05-08 | 2020-05-08 | Linkage locking flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111536337B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10231974A (en) * | 1997-02-19 | 1998-09-02 | Kawanishi Suido Kiki:Kk | Provisional fastening structure of expansion flexible pipe fitting |
| US8408836B2 (en) * | 2006-08-29 | 2013-04-02 | Lockheed Martin Corporation | Hull joint connection |
| CN203611213U (en) * | 2013-11-26 | 2014-05-28 | 北京宇航系统工程研究所 | Pipeline separation mechanism |
| CN204345120U (en) * | 2014-12-22 | 2015-05-20 | 何俊 | A kind of NEW TYPE OF COMPOSITE steady type flange apparatus |
| CN208153909U (en) * | 2018-05-14 | 2018-11-27 | 湖北典辉科技实业有限公司 | A kind of flange cover attaching structure of band precoating sealant |
| CN109268594A (en) * | 2018-10-22 | 2019-01-25 | 浙江亚泰连接盘制造有限公司 | It is a kind of to connect firm anticreep flange |
| CN109373108A (en) * | 2018-12-20 | 2019-02-22 | 洛阳威卡矿山机械设备有限公司 | A kind of shift sleeve structure |
| CN209354814U (en) * | 2018-12-19 | 2019-09-06 | 徐州华宝能源科技有限公司 | A kind of natural gas line interface sealing device |
| CN110778849A (en) * | 2019-11-12 | 2020-02-11 | 徐州乐泰机电科技有限公司 | Loose sleeve force transmission insulating flange based on multi-potential corrosion prevention of conveying pipeline |
-
2020
- 2020-05-08 CN CN202010390106.2A patent/CN111536337B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10231974A (en) * | 1997-02-19 | 1998-09-02 | Kawanishi Suido Kiki:Kk | Provisional fastening structure of expansion flexible pipe fitting |
| US8408836B2 (en) * | 2006-08-29 | 2013-04-02 | Lockheed Martin Corporation | Hull joint connection |
| CN203611213U (en) * | 2013-11-26 | 2014-05-28 | 北京宇航系统工程研究所 | Pipeline separation mechanism |
| CN204345120U (en) * | 2014-12-22 | 2015-05-20 | 何俊 | A kind of NEW TYPE OF COMPOSITE steady type flange apparatus |
| CN208153909U (en) * | 2018-05-14 | 2018-11-27 | 湖北典辉科技实业有限公司 | A kind of flange cover attaching structure of band precoating sealant |
| CN109268594A (en) * | 2018-10-22 | 2019-01-25 | 浙江亚泰连接盘制造有限公司 | It is a kind of to connect firm anticreep flange |
| CN209354814U (en) * | 2018-12-19 | 2019-09-06 | 徐州华宝能源科技有限公司 | A kind of natural gas line interface sealing device |
| CN109373108A (en) * | 2018-12-20 | 2019-02-22 | 洛阳威卡矿山机械设备有限公司 | A kind of shift sleeve structure |
| CN110778849A (en) * | 2019-11-12 | 2020-02-11 | 徐州乐泰机电科技有限公司 | Loose sleeve force transmission insulating flange based on multi-potential corrosion prevention of conveying pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111536337A (en) | 2020-08-14 |
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Effective date of registration: 20210907 Address after: 250206 No. 1, Dongzhao Village Industrial Park, Puji street, Zhangqiu District, Jinan City, Shandong Province Applicant after: Shandong Shengli Forging Co.,Ltd. Address before: 244000 Shizishan Economic Development Zone, Tongling City, Anhui Province Applicant before: Liu Yanwen |
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