CN109237159B - Stainless steel pipe joint - Google Patents
Stainless steel pipe joint Download PDFInfo
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- CN109237159B CN109237159B CN201811383086.5A CN201811383086A CN109237159B CN 109237159 B CN109237159 B CN 109237159B CN 201811383086 A CN201811383086 A CN 201811383086A CN 109237159 B CN109237159 B CN 109237159B
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- joint
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- shaped
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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
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/08—Screw-threaded joints; Forms of screw-threads for such joints with supplementary elements
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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
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
- F16L15/007—Screw-threaded joints; Forms of screw-threads for such joints with straight threads with more than one threaded section
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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 belongs to the technical field of pipeline joints, and particularly relates to a stainless steel pipe joint which comprises a joint body and a stainless steel pipe; the connector body is of a split type symmetrical structure and comprises a first connector and a second connector; the inner walls of the first joint and the second joint are provided with internal threads, and the thread diameter of the first joint is larger than that of the second joint; the two different internal threads are arranged, so that different stainless steel pipes can be suitable for the two different internal threads; one end of the first joint is provided with a groove; a waterproof rubber membrane is arranged in the groove, and an insertion hole is formed in the waterproof rubber membrane; one end of the second joint is fixedly connected with an inserting column matched with the inserting hole, and one end of the second joint is fixedly connected with a wedge-shaped fixing block; the inserting column is fixedly connected to the wedge-shaped fixing block; the invention has simple structure, convenient use, good waterproof effect and good bending resistance at the clamping part of the joint body, is suitable for two stainless steel pipes with different diameters, thereby prolonging the service life of the joint body.
Description
Technical Field
The invention belongs to the technical field of pipeline joints, and particularly relates to a stainless steel pipe joint.
Background
At present, stainless steel pipes are widely applied to industrial conveying pipelines and mechanical structural parts such as petroleum, chemical engineering, medical treatment, food, light industry, mechanical instruments and the like, when pipelines are built or mechanical structures are formed, a plurality of stainless steel pipes need to be communicated, joints are configured for the stainless steel pipes, and the stainless steel pipes are connected through the mutual connection among the joints.
The prior art also presents a technical scheme of stainless steel pipe joints, for example, a chinese patent with application number 201721097209 discloses a stainless steel pipe joint, which comprises a joint body and a stainless steel pipe, wherein the joint body comprises a first joint and a second joint; the first joint comprises a first threaded pipe and a first sleeving pipe, and the second joint comprises a second threaded pipe and a second sleeving pipe; the first threaded pipe is provided with internal threads, the second threaded pipe is provided with external threads, and the internal threads of the first threaded pipe are matched with the external threads of the second threaded pipe; one end of the first sleeving pipe and the first threaded pipe are integrally formed into a whole, and the other end of the first sleeving pipe is connected with the stainless steel pipe in a sleeving manner; one end of the second sleeving pipe and the second threaded pipe are integrally formed into a whole, and the other end of the second sleeving pipe is connected with the stainless steel pipe in a sleeving manner.
This technical scheme cup joints through nonrust steel pipe and joint to it is fixed through clamp locking, through threaded connection between joint and the joint, easy operation connects firmly. But this type of joint only is applicable to and connects single stainless steel pipe, and the limitation is big, and water-proof effects is not very good moreover, and the splice connection department is easily bent the deformation, has reduced the life who connects.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides the stainless steel pipe joint, and aims to provide the first joint and the second joint to enable the joint body to adapt to stainless steel pipes with two different diameters, so that the applicability of the joint body is improved, the arc-shaped rods which are hinged with each other are arranged to support the joint body, the clamping part of the joint body is prevented from being bent, and the service life of the joint body is prolonged.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a stainless steel pipe joint, which comprises a joint body and a stainless steel pipe; the connector body is of a split type symmetrical structure and comprises a first connector and a second connector; the inner walls of the first joint and the second joint are provided with internal threads, and the thread diameter of the first joint is larger than that of the second joint; the two different internal threads are arranged, so that different stainless steel pipes can be suitable for the two different internal threads; during operation, at first with first joint and second joint together formation joint body, will connect the body and move to the nonrust steel pipe department that needs to connect, through closing soon with nonrust steel pipe threaded connection on connecting the body, can connect the nonrust steel pipe of different diameters through two kinds of different internal threads on first joint and the second connects, when nonrust steel pipe external screw thread matches with first joint internal thread, can connect nonrust steel pipe through first joint, when nonrust steel pipe external screw thread matches with the second joint internal thread, can connect nonrust steel pipe through the second joint, the suitability is strong.
One end of the first joint is provided with a groove; a waterproof rubber membrane is arranged in the groove, and an insertion hole is formed in the waterproof rubber membrane; and one end of the second joint is fixedly connected with an inserting column matched with the jack. During operation, insert the jack of waterproof rubber membrane with inserting post on the second connects for waterproof rubber membrane outwards expands and tightly laminates on the recess inner wall of first joint, and water-proof effects is good.
One end of the second joint is fixedly connected with a wedge-shaped fixing block; the inserting column is fixedly connected to the wedge-shaped fixing block; two wedge-shaped blocks are arranged in the groove of the first joint; the small end of the wedge-shaped block is fixedly connected to the inner wall of the groove. During operation, insert the post of inserting on the second connects in the jack of waterproof rubber membrane, the wedge fixed block that links firmly on the second connects extrudees the wedge on the first joint until wedge fracture card die wedge fixed block in the insertion process for first joint and second articulate more firmly.
The middle of the lower end of the joint body is fixedly connected with a connecting block; two arc-shaped rods hinged with each other are hinged to the connecting block; a spring is arranged between the two arc-shaped rods, and a clamping ball is arranged at the end part of each arc-shaped rod; the second joint end face is provided with a clamping hole. During operation, the spring is pressed manually, and two articulated arc poles atress rotate, and when the spring pressed down to a certain extent, the card ball of arc pole tip just chucking was downthehole at the card on the second connects, can play the effect that the support connects the body on the one hand, and on the other hand prevents to connect body junction to be bent, and anti crooked is effectual.
The two arc-shaped rods are respectively provided with a clamping groove, and the two arc-shaped rods are respectively hinged with a supporting rod; one end of the left side supporting rod is hinged in the clamping groove of the left side arc-shaped rod; one end of the right side supporting rod is hinged in the clamping groove of the right side arc-shaped rod, and the other end of the right side supporting rod is hinged with the other end of the left side supporting rod; a stopping groove is formed at the hinged position of the two support rods; the clamping groove is used for limiting the rotation angle of one end of the supporting rod; the stop groove is used for limiting the rotation angle of the other end of the support rod; the spring is sleeved on the two supporting rods. The during operation presses the spring of two mutual articulated departments of branch, and two branches rotate relatively, because the locking groove restriction of the mutual articulated department of branch, two branches can only rotate downwards relatively to drive the branch other end and upwards rotate, applyed certain effort to the arc pole when the branch other end upwards rotates and make the arc pole upwards rotate, in the card hole of second joint up to the card ball chucking of arc pole tip, stop pressing the spring this moment.
Two rubber sleeves are sleeved on the joint body; the rubber sleeve is positioned at the clamping position of the first joint and the second joint, and a cavity is arranged in the rubber sleeve; an air bag is arranged between the arc-shaped rod and the support rod; an air pipe is arranged between the air bag and the rubber sleeve and is used for communicating the air bag with the cavity of the rubber sleeve. The during operation presses the spring of two mutual articulated departments of branch, and when two branch rotated relatively, branch can oppress the gasbag, and the inside air of gasbag pressurized back gets into the cavity of rubber sleeve via the trachea, thereby makes the rubber sleeve swell and cover the tight joint body, and water-proof effects is good.
The invention has the following beneficial effects:
1. the stainless steel pipe joint has the advantages that the first joint and the second joint are provided with the two different internal threads, so that the stainless steel pipe joint can be connected with two stainless steel pipes with different diameters, the applicability of the joint body is wider, the structure is simple, the use is convenient, and the applicability is wider.
2. According to the invention, the first connector and the second connector are spliced, and the spliced connector body has a good waterproof effect and is more stably clamped by using the wedge-shaped fixing block, the wedge-shaped block and the waterproof rubber film.
3. According to the invention, the arc-shaped rod, the support rod and the spring are arranged, the clamping ball at the end part of the arc-shaped rod is clamped in the clamping hole of the second connector by pressing the spring, so that the bending resistance effect of the connector body is better, the service life of the connector body is prolonged, and the waterproof performance of the clamping part of the connector body is better by arranging the air bag, the rubber sleeve and the air pipe and utilizing the change of the air flow direction in the air bag and the cavity of the rubber sleeve.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a view of the connection of a first joint and a second joint at A in FIG. 1;
fig. 3 is an enlarged view at B in fig. 1.
In the figure: the connector comprises a connector body 1, a stainless steel pipe 2, a first connector 3, a groove 31, a second connector 4, a clamping hole 41, a waterproof rubber film 5, a jack 51, an inserting column 6, a wedge-shaped fixing block 7, a wedge-shaped block 8, an arc-shaped rod 9, a clamping ball 91, a clamping groove 92, a spring 10, a support rod 11, a stop groove 111, a rubber sleeve 12, a cavity 121, an air bag 13 and an air pipe 14.
Detailed Description
The stainless steel pipe joint of the present invention will be described below with reference to fig. 1 to 3.
As shown in fig. 1-3, the stainless steel pipe joint of the present invention comprises a joint body 1 and a stainless steel pipe 2; the joint body 1 is of a split type symmetrical structure, and the joint body 1 comprises a first joint 3 and a second joint 4; inner threads are arranged on the inner walls of the first joint 3 and the second joint 4, and the diameter of the threads of the first joint 3 is larger than that of the threads of the second joint 4; the two different internal threads are arranged, so that different stainless steel pipes 2 can be suitable for the two different internal threads; during operation, first connect 3 and second to connect 4 block together and form and connect body 1, will connect body 1 and move to the nonrust steel pipe 2 department that needs to connect, through closing soon with nonrust steel pipe 2 threaded connection on connecting body 1, can connect nonrust steel pipe 2 of different diameters through two kinds of different internal threads on first joint 3 and the second connect 4, when 2 external screw threads of nonrust steel pipe are matched with 3 internal threads of first joint, can connect nonrust steel pipe 2 through first joint 3, when 2 external screw threads of nonrust steel pipe are matched with 4 internal threads of second joint, can connect nonrust steel pipe 2 through second joint 4, the suitability is strong.
As shown in fig. 1 and 2, a groove 31 is formed at one end of the first joint 3; a waterproof rubber membrane 5 is arranged in the groove 31, and a jack 51 is arranged on the waterproof rubber membrane 5; one end of the second joint 4 is fixedly connected with a plug column 6 matched with the jack 51. During operation, insert post 6 on the second connects 4 in the jack 51 of waterproof rubber membrane 5 for waterproof rubber membrane 5 outwards expands and tightly laminates on the recess 31 inner wall of first joint 3, and water-proof effects is good.
As shown in fig. 2, one end of the second joint 4 is fixedly connected with a wedge-shaped fixing block 7; the inserting column 6 is fixedly connected to the wedge-shaped fixing block 7; two wedge blocks 8 are arranged in the groove 31 of the first joint 3; the small end of the wedge block 8 is fixedly connected to the inner wall of the groove 31. During operation, insert post 6 on the second connects 4 and insert in the jack 51 of waterproof rubber membrane 5, the wedge fixed block 7 that links firmly on the second connects 4 extrudees the wedge 8 on the first joint 3 until wedge 8 breaks and blocks dead wedge fixed block 7 on the inserting process for first joint 3 and second connect 4 and connect more firmly.
As shown in fig. 1, the middle of the lower end of the joint body 1 is fixedly connected with a connecting block; two arc-shaped rods 9 which are hinged with each other are hinged on the connecting block; a spring 10 is arranged between the two arc-shaped rods 9, and a clamping ball 91 is arranged at the end part of each arc-shaped rod 9; the end face of the second joint 4 is provided with a clamping hole 41. During operation, manual pressure spring 10, two articulated arc poles 9 atress rotate, and when spring 10 pressed to a certain extent, the card ball 91 of arc pole 9 tip just chucked in the card hole 41 on second joint 4 can play the effect of support joint body 1 on the one hand, and on the other hand prevents to connect body 1 junction to be bent, and anti bending effect is good.
As shown in fig. 1 and 3, two of the arc-shaped rods 9 are provided with a clamping groove 92, and two of the arc-shaped rods 9 are hinged with a supporting rod 11; one end of the left side supporting rod 11 is hinged in the clamping groove 92 of the left side arc-shaped rod 9; one end of the right side supporting rod 11 is hinged in the clamping groove 92 of the right side arc-shaped rod 9, and the other end of the right side supporting rod 11 is hinged with the other end of the left side supporting rod 11; a stopping groove 111 is formed at the hinged position of the two support rods 11; the clamping groove 92 is used for limiting the rotation angle of one end of the supporting rod 11; the stop groove 111 is used for limiting the rotation angle of the other end of the support rod 11; the spring 10 is sleeved on the two supporting rods 11. During operation presses the spring 10 of two mutual articulated departments of branch 11, and two branch 11 rotate relatively, because the restriction of the locking groove 111 of the mutual articulated department of branch 11, two branch 11 can only rotate downwards relatively to drive the other end of branch 11 and upwards rotate, exert certain effort and make the arc pole 9 upwards rotate to arc pole 9 when the other end of branch 11 upwards rotates, until the card ball 91 chucking of arc pole 9 tip is in the card hole of second joint 4, stop pressing spring 10 this moment.
As shown in fig. 1, two rubber sleeves 12 are sleeved on the joint body 1; the rubber sleeve 12 is positioned at the clamping position of the first joint 3 and the second joint 4, and a cavity 121 is formed in the rubber sleeve 12; an air bag 13 is arranged between the arc-shaped rod 9 and the supporting rod 11; an air pipe is arranged between the air bag 13 and the rubber sleeve 12 and is used for communicating the air bag 13 with the cavity 121 of the rubber sleeve 12. During operation, press the spring 10 of two branch 11 articulated departments each other, when two branch 11 rotate relatively, branch 11 can oppress gasbag 13, and inside air gets into the cavity 121 of rubber sleeve 12 via trachea 14 behind gasbag 13 pressurized, thereby makes rubber sleeve 12 swell and cover tight joint body 1, and water-proof effects is good.
The specific working process is as follows:
during operation, first joint 3 and second joint 4 joint together and form joint body 1, insert the jack 51 of waterproof rubber membrane 5 with inserting post 6 on the second joint 4 in for waterproof rubber membrane 5 outwards expands and tightly laminates on the recess 31 inner wall of first joint 3, and water-proof effects is good. The wedge-shaped fixing block 7 fixedly connected to the second joint 4 extrudes the wedge-shaped block 8 on the first joint 3 in the inserting process until the wedge-shaped block 8 is broken and the wedge-shaped fixing block 7 is clamped, so that the first joint 3 and the second joint 4 are connected more stably. Move to the nonrust steel pipe 2 department that needs to connect body 1, through closing soon with nonrust steel pipe 2 threaded connection on connecting body 1, can connect nonrust steel pipe 2 of different diameters through two kinds of different internal threads on first joint 3 and the second connects 4, when 2 external screw threads of nonrust steel pipe and 3 internal threads of first joint match, can connect nonrust steel pipe 2 through first joint 3, when 2 external screw threads of nonrust steel pipe and 4 internal threads of second joint match, can connect nonrust steel pipe 2 through second joint 4, the suitability is strong.
When pressing the spring 10 of two branch 11 articulated department each other, branch 11 can oppress gasbag 13 when rotating, and inside air gets into the cavity 121 of rubber sleeve 12 via trachea 14 behind gasbag 13 pressurized, thereby makes rubber sleeve 12 swell and cover tight joint body 1, and water-proof effects is good.
While one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
Claims (1)
1. A stainless steel pipe joint is characterized in that: comprises a joint body (1) and a stainless steel pipe (2); the joint body (1) is of a split type symmetrical structure, and the joint body (1) comprises a first joint (3) and a second joint (4); inner threads are arranged on the inner walls of the first joint (3) and the second joint (4), and the diameter of the inner threads of the first joint (3) is larger than that of the inner threads of the second joint (4);
one end of the first joint (3) is provided with a groove (31); a waterproof rubber membrane (5) is arranged in the groove (31), and a jack (51) is arranged on the waterproof rubber membrane (5); one end of the second joint (4) is fixedly connected with an inserting column (6) matched with the inserting hole (51);
one end of the second joint (4) is fixedly connected with a wedge-shaped fixing block (7); the inserting column (6) is fixedly connected to the wedge-shaped fixing block (7); two wedge-shaped blocks (8) are arranged in the groove (31) of the first joint (3); the small end of the wedge-shaped block (8) is fixedly connected to the inner wall of the groove (31);
the middle of the lower end of the joint body (1) is fixedly connected with a connecting block; two arc-shaped rods (9) hinged with each other are hinged to the connecting block; a spring (10) is arranged between the two arc-shaped rods (9), and the end parts of the arc-shaped rods (9) are provided with clamping balls (91); a clamping hole (41) is formed in the end face of the second joint (4);
clamping grooves (92) are formed in the two arc-shaped rods (9), and a supporting rod (11) is hinged to each of the two arc-shaped rods (9); one end of the left side supporting rod (11) is hinged in a clamping groove (92) of the left side arc-shaped rod (9); one end of the right side supporting rod (11) is hinged in a clamping groove (92) of the right side arc-shaped rod (9), and the other end of the right side supporting rod (11) is hinged with the other end of the left side supporting rod (11); a stopping groove (111) is formed at the hinged position of the two support rods (11); the clamping groove (92) is used for limiting the rotation angle of one end of the supporting rod (11); the stop groove (111) is used for limiting the rotation angle of the other end of the support rod (11); the spring (10) is sleeved on the two supporting rods (11);
two rubber sleeves (12) are sleeved on the joint body (1); the rubber sleeve (12) is positioned at the clamping position of the first joint (3) and the second joint (4), and a cavity (121) is arranged in the rubber sleeve (12); an air bag (13) is arranged between the arc-shaped rod (9) and the support rod (11); an air pipe (14) is arranged between the air bag (13) and the rubber sleeve (12), and the air pipe (14) is used for communicating the air bag (13) with a cavity (121) of the rubber sleeve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383086.5A CN109237159B (en) | 2018-11-20 | 2018-11-20 | Stainless steel pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383086.5A CN109237159B (en) | 2018-11-20 | 2018-11-20 | Stainless steel pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109237159A CN109237159A (en) | 2019-01-18 |
| CN109237159B true CN109237159B (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811383086.5A Active CN109237159B (en) | 2018-11-20 | 2018-11-20 | Stainless steel pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109237159B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268146B (en) * | 2020-12-14 | 2021-03-09 | 烟台工程职业技术学院(烟台市技师学院) | Pipe joint monitored by computer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101013105B1 (en) * | 2008-06-02 | 2011-02-14 | 김정순 | Piping joint |
| CN202100850U (en) * | 2011-05-25 | 2012-01-04 | 浙江正同管业有限公司 | Connection structure for pipe fittings |
| CN203322549U (en) * | 2013-06-23 | 2013-12-04 | 浙江金宸三普换热器有限公司 | Connecting sleeve for multipurpose refrigerating pipe |
| KR20170004074U (en) * | 2016-05-24 | 2017-12-04 | 박종석 | A Connector for tap water piping |
| CN206861093U (en) * | 2017-05-16 | 2018-01-09 | 诸暨市捷成机械制造有限公司 | A kind of Novel joint |
| CN207486284U (en) * | 2017-12-01 | 2018-06-12 | 四川长鑫管业有限公司 | A kind of reducing fittings connector |
| CN207945388U (en) * | 2018-02-06 | 2018-10-09 | 山东琨福农业科技有限公司 | A kind of easy-to-mount agricultural sparge pipe connector |
-
2018
- 2018-11-20 CN CN201811383086.5A patent/CN109237159B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101013105B1 (en) * | 2008-06-02 | 2011-02-14 | 김정순 | Piping joint |
| CN202100850U (en) * | 2011-05-25 | 2012-01-04 | 浙江正同管业有限公司 | Connection structure for pipe fittings |
| CN203322549U (en) * | 2013-06-23 | 2013-12-04 | 浙江金宸三普换热器有限公司 | Connecting sleeve for multipurpose refrigerating pipe |
| KR20170004074U (en) * | 2016-05-24 | 2017-12-04 | 박종석 | A Connector for tap water piping |
| CN206861093U (en) * | 2017-05-16 | 2018-01-09 | 诸暨市捷成机械制造有限公司 | A kind of Novel joint |
| CN207486284U (en) * | 2017-12-01 | 2018-06-12 | 四川长鑫管业有限公司 | A kind of reducing fittings connector |
| CN207945388U (en) * | 2018-02-06 | 2018-10-09 | 山东琨福农业科技有限公司 | A kind of easy-to-mount agricultural sparge pipe connector |
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| Publication number | Publication date |
|---|---|
| CN109237159A (en) | 2019-01-18 |
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Effective date of registration: 20200616 Address after: 313000 8 Shuang Lin Road, Shuang Lin Town, Nanxun District, Huzhou, Zhejiang Patentee after: Huzhou co he Pipe Co.,Ltd. Address before: 100043 Beijing City, Shijingshan District Jin Yuan Zhuang Road No. 5, North China University of Technology Patentee before: Liu Jinbao |
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Address after: 313000 No. 769, Changxing Avenue, economic and Technological Development Zone, Changxing County, Huzhou City, Zhejiang Province Patentee after: Huzhou co he Pipe Co.,Ltd. Address before: 313000 8 Shuang Lin Road, Shuang Lin Town, Nanxun District, Huzhou, Zhejiang Patentee before: Huzhou co he Pipe Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
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Address after: 313000 No. 769, Changxing Avenue, economic and Technological Development Zone, Changxing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang Gonghe Industrial Co.,Ltd. Address before: 313000 No. 769, Changxing Avenue, economic and Technological Development Zone, Changxing County, Huzhou City, Zhejiang Province Patentee before: Huzhou co he Pipe Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |