CN213558905U - Steel pipe cleaning equipment - Google Patents
Steel pipe cleaning equipment Download PDFInfo
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- CN213558905U CN213558905U CN202021862038.7U CN202021862038U CN213558905U CN 213558905 U CN213558905 U CN 213558905U CN 202021862038 U CN202021862038 U CN 202021862038U CN 213558905 U CN213558905 U CN 213558905U
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Abstract
The utility model discloses a steel pipe cleaning equipment, include: the shell is provided with a feeding hole and a discharging hole, and a third platform extends towards one side of the bottom of the shell; the conveying device comprises a first conveying roller, a second conveying roller, a third conveying roller, a fourth conveying roller and a conveying belt, wherein the conveying belt is provided with check blocks arranged in a matrix form; the spraying device comprises a first spraying group; the drying device comprises a first air knife and a second air knife; wherein, a fan is arranged on one side of the third platform; the other side is provided with a liquid storage tank, and the liquid storage tank is provided with a spray pump. The steel pipe cleaning equipment has simple structure and convenient use, and realizes the purpose of automatically cleaning the outer part and the inner wall of the steel pipe through the matching arrangement of the conveying device, the spraying device and the drying device; the cleaning efficiency of the steel pipe machining is improved, the labor intensity of workers is reduced, and the automation degree of the steel pipe machining is greatly improved.
Description
Technical Field
The utility model relates to a steel pipe machining field, concretely relates to steel pipe cleaning equipment.
Background
A steel pipe is a steel material having a hollow cross section, the length of which is much greater than the diameter or circumference. The steel pipe is divided into round, square, rectangular and special-shaped steel pipes according to the shape of the cross section; the steel pipe is divided into a carbon structural steel pipe, a low-alloy structural steel pipe, an alloy steel pipe and a composite steel pipe according to the material quality; the steel pipes are divided into steel pipes for conveying pipelines, engineering structures, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment and the like according to the application; the production process includes seamless steel pipe and welded steel pipe, the seamless steel pipe includes hot rolling and cold rolling, the welded steel pipe includes straight welded steel pipe and spiral welded steel pipe, and the steel pipe has relatively great amount of iron powder adhered to the steel pipe and needs cleaning treatment,
a patent publication No. CN108787643A entitled "a steel pipe cleaning machine" as disclosed in 2018.11.13 discloses a steel pipe cleaning machine comprising: the lifting unit is provided with an outer housing at the rear upper part; the blowing unit, the blowing unit sets up the lift unit's top includes: a material rack; a driving roller; a driven roller; a belt; a pressure sensing unit; a flushing unit disposed at an inner top of the outer casing, comprising: a first track; a first roller; an external washing unit; a pipe external washing head; an in-tube flushing unit; a brush unit disposed inside the outer casing, including: an external pipe brush unit; a brush unit in the tube; the inner brush of the pipe can extend into the steel pipe. This patent has realized washing and the technological effect who brushes the steel pipe inside and outside wall, but does not blow dry after washing the completion, and follow-up still needs the manual work to blow dry, and is comparatively troublesome.
In the cleaning process of the existing steel pipe, the following problems still exist:
1. the cleaning effect on the inner wall of the steel pipe is poor;
2. the drying after cleaning can not be realized, and the automation degree is not high.
Based on the above situation, the utility model provides a steel pipe cleaning equipment can effectively solve above problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steel pipe cleaning equipment. The steel pipe cleaning equipment has simple structure and convenient use, and realizes the purpose of automatically cleaning the outer part and the inner wall of the steel pipe through the matching arrangement of the conveying device, the spraying device and the drying device; the cleaning efficiency of the steel pipe machining is improved, the labor intensity of workers is reduced, and the automation degree of the steel pipe machining is greatly improved.
The utility model discloses a following technical scheme realizes:
a steel pipe cleaning apparatus comprising:
the device comprises a shell, a first platform is arranged on the shell in an outward extending mode, a second platform is arranged on the shell in an outward extending mode, a third platform is arranged on the bottom of the shell in an outward extending mode, and a conveying device, a spraying device and a drying device are arranged in the shell;
the conveying device comprises a first conveying roller, a second conveying roller, a third conveying roller, a fourth conveying roller and a conveying belt, wherein the first conveying roller and the second conveying roller are parallelly arranged in the shell along the horizontal direction, the third conveying roller is arranged on the right lower side of the first conveying roller, the fourth conveying roller is arranged on the left lower side of the first conveying roller, the height of the third conveying roller is larger than that of the fourth conveying roller, the conveying belt is arranged on the first conveying roller, the second conveying roller, the third conveying roller and the fourth conveying roller, and at least two stoppers which are arranged at equal intervals are arranged on the conveying belt;
the spraying device comprises a first spraying group, the first spraying group is arranged above the conveying belt between the first conveying roller and the second conveying roller, and the first spraying group is close to the first conveying roller;
the drying device comprises a first air knife and a second air knife, the first air knife and the second air knife are arranged above the conveying belt between the first conveying roller and the second conveying roller, and the first air knife and the second air knife are close to the second conveying roller;
a fan is arranged on one side of the third platform and connected with a drying device; a liquid storage tank is arranged on the other side of the liquid storage tank, a spray pump is arranged on the liquid storage tank, and the spray pump is respectively connected with the spray device and the liquid storage tank;
the shell is internally provided with an inclined plane at the position below the feed inlet, and a short plate inclined downwards is arranged below the inclined plane.
An object of the utility model is to provide a steel pipe cleaning equipment. The steel pipe cleaning equipment has simple structure and convenient use, and realizes the purpose of automatically cleaning the outer part and the inner wall of the steel pipe through the matching arrangement of the conveying device, the spraying device and the drying device; the cleaning efficiency of the steel pipe machining is improved, the labor intensity of workers is reduced, and the automation degree of the steel pipe machining is greatly improved.
Preferably, the speed of the conveying belt is 0.8-1.5 m/min.
Preferably, first conveying roller, second conveying roller, third conveying roller and fourth conveying roller slope set up, first conveying roller, second conveying roller, third conveying roller and fourth conveying roller are 0.1 ~ 2.5 with horizontal angle of included angle.
Preferably, the conveying belt is a chain type mesh belt.
Preferably, the spraying device further comprises a second spraying group, and the second spraying group is arranged on the side face of the conveying belt below the first spraying group.
Preferably, the drying device further comprises a third air knife, and the third air knife is arranged on the side surface of the conveying belt below the first air knife and the second air knife.
Preferably, the fan is provided with a primary filter.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the steel pipe cleaning equipment has simple structure and convenient use, and realizes the purpose of automatically cleaning the outer part and the inner wall of the steel pipe through the matching arrangement of the conveying device, the spraying device and the drying device; the cleaning efficiency of steel pipe processing is improved, workman's intensity of labour has been reduced, steel pipe processing's degree of automation has been improved greatly, and concrete beneficial effect is as follows:
1. the spraying device, the conveying device and the drying device are matched, so that the automatic cleaning of the steel pipe is realized, and manual operation is not needed;
2. through having set up the group that sprays in conveyor side, reached all to the inside and outside purpose of wasing of steel pipe, the cleaning performance preferred.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention;
FIG. 2 is a schematic left-side sectional structure of the present invention;
fig. 3 is another schematic structural diagram of the cross section viewed from the left side of the present invention.
In the figure: 1-a housing; 11-a first platform; 12-a second platform; 13-a third platform; 131-a fan; 1311-primary filter; 132-a reservoir; 133-a spray pump; 14-inclined plane; 15-short plate; 2-a conveying device; 21-a first conveyor roller; 22-a second conveyor roller; 23-a third conveyor roller; 24-a fourth conveyor roll; 25-a conveyor belt; 251-a stop block; 3-a spraying device; 31-a first spray group; 32-a second spray group; 4-a drying device; 41 a first air knife; 42-second air knife.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1:
as shown in fig. 1 to 3, the utility model provides a steel pipe cleaning equipment, include:
the steel pipe cleaning device comprises a shell 1, wherein the shell 1 is provided with a feeding hole and a discharging hole, the feeding hole extends outwards to form a first platform 11, the first platform 11 is used for placing a steel pipe into cleaning equipment, the discharging hole extends outwards to form a second platform 12, the second platform 12 is used for a storage area after the steel pipe is cleaned, a third platform 13 extends towards one side of the bottom of the shell 1, and a conveying device 2, a spraying device 3 and a drying device 4 are arranged in the shell 1;
the conveying device 2 comprises a first conveying roller 21, a second conveying roller 22, a third conveying roller 23, a fourth conveying roller 24 and a conveying belt 25, wherein the first conveying roller 21 and the second conveying roller 22 are arranged in the shell 1 in parallel along the horizontal direction, the third conveying roller 23 is arranged on the right lower side of the first conveying roller 21, the fourth conveying roller 24 is arranged on the left lower side of the first conveying roller 21, the height of the third conveying roller 23 is larger than that of the fourth conveying roller 24, the conveying belt 25 is arranged on the first conveying roller 21, the second conveying roller 22, the third conveying roller 23 and the fourth conveying roller 24, at least two stoppers 251 which are arranged at equal intervals are arranged on the conveying belt 25, and in the steel pipe conveying process, the stoppers 251 are used for limiting the steel pipes and preventing the steel pipes from moving so that the steel pipes can smoothly reach the next station;
the spraying device 3 comprises a first spraying group 31, the first spraying group 31 is arranged above the conveying belt 25 between the first conveying roller 21 and the second conveying roller 22, the first spraying group 31 is close to the first conveying roller 21, and the spraying device 3 sprays the steel pipe below to wash away dirt outside the steel pipe;
the drying device 4 comprises a first air knife 41 and a second air knife 42, the first air knife 41 and the second air knife 42 are arranged above the conveying belt 25 between the first conveying roller 21 and the second conveying roller 22, the first air knife 41 and the second air knife 42 are close to the second conveying roller 22, and the drying device 4 sweeps the steel pipe below to blow away redundant water;
a fan 131 is arranged on one side of the third platform 13, the fan 131 is connected with the drying device 4, and the fan 4 provides aerodynamic force for the drying device 4; a liquid storage tank 132 is arranged on the other side of the water storage tank 132, a spray pump 133 is arranged on the liquid storage tank 132, the spray pump 133 is respectively connected with the spray device 3 and the liquid storage tank 132, and the spray pump 133 extracts water in the liquid storage tank 132 and conveys the water to the spray device 3;
an inclined plane 14 is arranged at a position below the feeding hole in the shell 1, a short plate 15 which inclines downwards is arranged below the inclined plane 14, water is filled at a position below the inclined plane 14, the steel pipe enters the oiling device from the feeding hole, rolls onto the short plate 15 through the inclined plane 14, and can slide onto the stop block 251 from the short plate 15, at the moment, the steel pipe is soaked in the water, and waits for the conveying device 2 to convey the steel pipe to the next working procedure.
The above technical solutions are all understandable to those skilled in the art.
Example 2:
as shown in fig. 1 to 3, the utility model provides a steel pipe cleaning equipment, include:
the steel pipe cleaning device comprises a shell 1, wherein the shell 1 is provided with a feeding hole and a discharging hole, the feeding hole extends outwards to form a first platform 11, the first platform 11 is used for placing a steel pipe into cleaning equipment, the discharging hole extends outwards to form a second platform 12, the second platform 12 is used for a storage area after the steel pipe is cleaned, a third platform 13 extends towards one side of the bottom of the shell 1, and a conveying device 2, a spraying device 3 and a drying device 4 are arranged in the shell 1;
the conveying device 2 comprises a first conveying roller 21, a second conveying roller 22, a third conveying roller 23, a fourth conveying roller 24 and a conveying belt 25, wherein the first conveying roller 21 and the second conveying roller 22 are arranged in the shell 1 in parallel along the horizontal direction, the third conveying roller 23 is arranged on the right lower side of the first conveying roller 21, the fourth conveying roller 24 is arranged on the left lower side of the first conveying roller 21, the height of the third conveying roller 23 is larger than that of the fourth conveying roller 24, the conveying belt 25 is arranged on the first conveying roller 21, the second conveying roller 22, the third conveying roller 23 and the fourth conveying roller 24, at least two stoppers 251 which are arranged at equal intervals are arranged on the conveying belt 25, and in the steel pipe conveying process, the stoppers 251 are used for limiting the steel pipes and preventing the steel pipes from moving so that the steel pipes can smoothly reach the next station;
the spraying device 3 comprises a first spraying group 31, the first spraying group 31 is arranged above the conveying belt 25 between the first conveying roller 21 and the second conveying roller 22, the first spraying group 31 is close to the first conveying roller 21, and the spraying device 3 sprays the steel pipe below to wash away dirt outside the steel pipe;
the drying device 4 comprises a first air knife 41 and a second air knife 42, the first air knife 41 and the second air knife 42 are arranged above the conveying belt 25 between the first conveying roller 21 and the second conveying roller 22, the first air knife 41 and the second air knife 42 are close to the second conveying roller 22, and the drying device 4 sweeps the steel pipe below to blow away redundant water;
a fan 131 is arranged on one side of the third platform 13, the fan 131 is connected with the drying device 4, and the fan 4 provides aerodynamic force for the drying device 4; a liquid storage tank 132 is arranged on the other side of the water storage tank 132, a spray pump 133 is arranged on the liquid storage tank 132, the spray pump 133 is respectively connected with the spray device 3 and the liquid storage tank 132, and the spray pump 133 extracts water in the liquid storage tank 132 and conveys the water to the spray device 3;
an inclined plane 14 is arranged at a position below the feeding hole in the shell 1, a short plate 15 which inclines downwards is arranged below the inclined plane 14, water is filled at a position below the inclined plane 14, the steel pipe enters the oiling device from the feeding hole, rolls onto the short plate 15 through the inclined plane 14, and can slide onto the stop block 251 from the short plate 15, at the moment, the steel pipe is soaked in the water, and waits for the conveying device 2 to convey the steel pipe to the next working procedure.
Further, in another embodiment, the speed of the conveyer belt 25 is 0.8-1.5 m/min.
Because above structure can adjust conveying speed according to actual need, and the speed can influence the immersion oil time and the deoiling effect of steel pipe, improves conveying speed and still can improve the work efficiency of deoiling equipment, has improved the utility model discloses an application scope.
Further, in another embodiment, the first conveyor roller 21, the second conveyor roller 22, the third conveyor roller 23 and the fourth conveyor roller 24 are obliquely arranged, and the included angles between the first conveyor roller 21, the second conveyor roller 22, the third conveyor roller 23 and the fourth conveyor roller 24 and the horizontal plane are all 0.1-2.5 degrees.
Due to the structure, the steel pipe on the conveying belt 25 can be inclined, redundant water in the steel pipe can be discharged, the drying effect is improved, and the quality of the steel pipe is improved.
Further, in another embodiment, the conveyor belt 25 is a chain belt.
Further, in another embodiment, the spraying device 3 further includes a second spraying group 32, and the second spraying group 32 is disposed on the side surface of the conveyor belt 25 below the first spraying group 31.
The purpose of providing the second spraying group 32 on the side surface of the conveyor belt 25 is to spray the inside of the steel pipe, wash away dirt inside the steel pipe, and improve the cleaning effect inside the steel pipe.
Further, in another embodiment, the drying device 4 further includes a third air knife 43, and the third air knife 43 is disposed at the side of the conveyor belt 25 below the first air knife 41 and the second air knife 42.
The purpose of arranging the second spraying group 32 on the side surface of the conveying belt 25 is to blow air into the steel pipe, blow away water in the steel pipe and improve the drying effect in the steel pipe.
Further, in another embodiment, a primary filter 1311 is disposed on the fan 131.
The primary filter 1311 can filter dust in the air, so that the air blown out by the air knife is cleaner, the steel pipe is prevented from being scratched, and the quality of the processed steel pipe is improved.
The above technical solutions are all understandable to those skilled in the art.
The utility model discloses a theory of operation of an embodiment as follows:
a steel pipe cleaning device comprises a steel pipe, wherein the steel pipe enters the cleaning device from a feeding hole, and rolls onto a short plate 15 through an inclined surface 14, the steel pipe is soaked in water and then slides into a baffle 251, the steel pipe is conveyed to a spraying device 3 through a conveying belt 25, a first spraying group 31 and a second spraying group 32 wash the outside of the steel pipe at the upper part, a third spraying group 33 washes the inner wall of the steel pipe at the side surface, and then the steel pipe is conveyed to a drying device 4, a first air knife 41 and a second air knife 42 sweep the outside of the steel pipe at the upper part, a third air knife 43 sweeps the inner wall of the steel pipe at the side surface, and finally the steel pipe is conveyed to a discharging hole.
According to the description and drawings of the present invention, it is easy for those skilled in the art to manufacture or use the steel pipe cleaning apparatus of the present invention, and the positive effects described in the present invention can be produced.
Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (7)
1. A steel pipe cleaning apparatus, comprising:
the device comprises a shell (1), wherein a feed inlet and a discharge outlet are formed in the shell (1), a first platform (11) extends outwards from the feed inlet, a second platform (12) extends outwards from the discharge outlet, a third platform (13) extends towards one side of the bottom of the shell (1), and a conveying device (2), a spraying device (3) and a drying device (4) are arranged in the shell (1);
the conveying device (2) comprises a first conveying roller (21), a second conveying roller (22), a third conveying roller (23), a fourth conveying roller (24) and a conveying belt (25), wherein the first conveying roller (21) and the second conveying roller (22) are arranged in the shell (1) in parallel along the horizontal direction, the third conveying roller (23) is arranged on the lower right side of the first conveying roller (21), the fourth conveying roller (24) is arranged on the lower left side of the first conveying roller (21), the height of the third conveying roller (23) is larger than that of the fourth conveying roller (24), the conveying belt (25) is arranged on the first conveying roller (21), the second conveying roller (22), the third conveying roller (23) and the fourth conveying roller (24), and at least two stopping blocks (251) which are arranged at equal intervals are arranged on the conveying belt (25);
the spraying device (3) comprises a first spraying group (31), the first spraying group (31) is arranged above the conveying belt (25) between the first conveying roller (21) and the second conveying roller (22), and the first spraying group (31) is close to the first conveying roller (21);
the drying device (4) comprises a first air knife (41) and a second air knife (42), the first air knife (41) and the second air knife (42) are arranged above the conveying belt (25) between the first conveying roller (21) and the second conveying roller (22), and the first air knife (41) and the second air knife (42) are close to the second conveying roller (22);
a fan (131) is arranged on one side of the third platform (13), and the fan (131) is connected with the drying device (4); a liquid storage tank (132) is arranged on the other side of the device, a spray pump (133) is arranged on the liquid storage tank (132), and the spray pump (133) is respectively connected with the spray device (3) and the liquid storage tank (132);
the inner part of the shell (1) is provided with an inclined plane (14) below the feed inlet, and a short plate (15) which inclines downwards is arranged below the inclined plane (14).
2. The steel pipe cleaning apparatus according to claim 1, characterized in that: the speed of the conveying belt (25) is 0.8-1.5 m/min.
3. The steel pipe cleaning apparatus according to claim 1, characterized in that: first conveying roller (21), second conveying roller (22), third conveying roller (23) and fourth conveying roller (24) slope setting, first conveying roller (21), second conveying roller (22), third conveying roller (23) and fourth conveying roller (24) are 0.1 ~ 2.5 with horizontal plane contained angle.
4. The steel pipe cleaning apparatus according to claim 1, characterized in that: the conveying belt (25) is a chain type mesh belt.
5. The steel pipe cleaning apparatus according to claim 1, characterized in that: the spraying device (3) further comprises a second spraying group (32), and the second spraying group (32) is arranged on the side face of the conveying belt (25) below the first spraying group (31).
6. The steel pipe cleaning apparatus according to claim 1, characterized in that: the drying device (4) further comprises a third air knife (43), and the third air knife (43) is arranged on the side surface of the conveying belt (25) below the first air knife (41) and the second air knife (42).
7. The steel pipe cleaning apparatus according to claim 1, characterized in that: and a primary filter (1311) is arranged on the fan (131).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021862038.7U CN213558905U (en) | 2020-08-31 | 2020-08-31 | Steel pipe cleaning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021862038.7U CN213558905U (en) | 2020-08-31 | 2020-08-31 | Steel pipe cleaning equipment |
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| Publication Number | Publication Date |
|---|---|
| CN213558905U true CN213558905U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021862038.7U Active CN213558905U (en) | 2020-08-31 | 2020-08-31 | Steel pipe cleaning equipment |
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| CN (1) | CN213558905U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054275A (en) * | 2021-12-22 | 2022-02-18 | 徐州同乐管业有限公司 | Paint spraying device for inner and outer surfaces of steel pipe |
| CN114134510A (en) * | 2021-11-05 | 2022-03-04 | 粤钢(广州)有限公司 | Pickling device for producing hot-dip galvanized steel pipe and using method thereof |
| CN115572967A (en) * | 2022-10-17 | 2023-01-06 | 山东省嘉铭精工科技有限公司 | Pre-passivation treatment process for inner wall of copper pipe |
-
2020
- 2020-08-31 CN CN202021862038.7U patent/CN213558905U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134510A (en) * | 2021-11-05 | 2022-03-04 | 粤钢(广州)有限公司 | Pickling device for producing hot-dip galvanized steel pipe and using method thereof |
| CN114134510B (en) * | 2021-11-05 | 2024-02-23 | 粤钢(广州)有限公司 | Pickling device for hot dip galvanized steel pipe production and use method thereof |
| CN114054275A (en) * | 2021-12-22 | 2022-02-18 | 徐州同乐管业有限公司 | Paint spraying device for inner and outer surfaces of steel pipe |
| CN114054275B (en) * | 2021-12-22 | 2022-09-06 | 徐州同乐管业有限公司 | Paint spraying device for inner and outer surfaces of steel pipe |
| CN115572967A (en) * | 2022-10-17 | 2023-01-06 | 山东省嘉铭精工科技有限公司 | Pre-passivation treatment process for inner wall of copper pipe |
| CN115572967B (en) * | 2022-10-17 | 2024-05-24 | 山东省嘉铭精工科技有限公司 | Copper pipe inner wall pre-passivation treatment process |
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Address after: No. 101, Taisheng Avenue, Huimin street, Jiashan County, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Yongli Precision Steel Pipe Co.,Ltd. Address before: No. 101, Taisheng Avenue, Huimin street, Jiashan County, Jiaxing City, Zhejiang Province Patentee before: JIAXING YONGXIN PRECISION PIPE CO.,LTD. |