CN109812242B - Oil recovery well head theftproof clamp - Google Patents
Oil recovery well head theftproof clamp Download PDFInfo
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- CN109812242B CN109812242B CN201910146874.0A CN201910146874A CN109812242B CN 109812242 B CN109812242 B CN 109812242B CN 201910146874 A CN201910146874 A CN 201910146874A CN 109812242 B CN109812242 B CN 109812242B
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Abstract
The invention discloses an oil production well head anti-theft clamp which comprises a first clamp half body and a second clamp half body, wherein a first screw hole is formed in the first clamp half body, a second screw hole is formed in the second clamp half body, a stud is arranged in the first screw hole and the second screw hole, the anti-theft clamp further comprises a protective cap, a fixing piece, a locking piece, a compression column and an opening key, a first nut and a second nut are respectively arranged at two ends of the stud, the first nut is connected with the first clamp half body, the second nut is connected with the second clamp half body, the connecting end part of the first clamp half body and the second clamp half body is provided with the protective cap, the locking piece is arranged inside the first clamp half body and is connected with the stud, the fixing piece is arranged inside the second clamp half body and is connected with the stud, the opening key comprises a key body for opening the locking piece and an ejector rod for opening the fixing piece, the problem of clamp open easily on present oil well pipeline is solved.
Description
Technical Field
The invention relates to the technical field of oil production wellhead equipment, in particular to an anti-theft clamp for an oil production wellhead.
Background
The connection between the valve, the tee joint, the polish rod air-blowing air, the oil nozzle sleeve and the like on the oil-water well Christmas tree is realized by adopting a clamp connection, so that the clamp is an essential connection device on the oil-water well Christmas tree. The ordinary instrument can be dismantled very easily after current clamp installation, steals the son and steals crude oil and well head equipment very easily, for preventing above-mentioned action, can be in the same place bolt and nut welding on the clamp occasionally, has played the theftproof effect, but is unfavorable for subsequent dismantlement, and it wastes time and energy to dismantle.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the anti-theft clamp for the oil extraction well mouth, the lock block is arranged in the first clamp body, the fixing piece is arranged in the second clamp half body, the screw column is self-locked through the lock block and the fixing piece, the clamp cannot be opened even if the first nut and the second nut are taken down from the screw column, the problem that the clamp is easy to open on the existing oil well pipeline is solved, the use safety of the clamp is improved, illegal persons are prevented from stealing oil, and the loss of national resources is avoided.
In order to realize the purpose, the invention provides the following technical scheme:
the utility model provides an oil recovery well head theftproof clamp, includes first clamp halfbody, second clamp halfbody, is equipped with first screw on the first clamp halfbody, is equipped with the second screw on the second clamp halfbody, is equipped with the double-screw bolt in first screw and the second screw, still includes helmet, mounting, locking piece, compression leg, opening key, the both ends of double-screw bolt are equipped with first nut, second nut respectively, first nut and first clamp halfbody are connected, the second nut is connected with the second clamp halfbody, and the tip of being connected of first clamp halfbody and second clamp halfbody is equipped with the helmet, the inside of first clamp halfbody is equipped with the locking piece, the locking piece is connected with the double-screw bolt, the inside of second clamp halfbody is equipped with the mounting, the mounting is connected with the double-screw bolt, opening key is including the key body that is used for opening the locking piece and the ejector pin that is used for opening the mounting.
Preferably, the upper end of first clamp half body is equipped with first spread groove, the upper end of second clamp half body is equipped with the second spread groove, first spread groove corresponds the setting with the second spread groove, be equipped with the anticreep hole on the helmet, the anticreep hole is equipped with the anticreep post, the anticreep post respectively with first spread groove, the cooperation of second spread groove, the upper end in anticreep hole is equipped with the sealing plug.
Preferably, the upper end face of the protective cap is obliquely arranged.
Preferably, the inner walls of the first clamp half body and the second clamp half body are provided with anti-slip strips.
Preferably, the end portion of the first clamp half body is provided with a first opening hole, the first opening hole is communicated with a first screw hole, the locking block comprises an opening block and a locking column, a stop block is arranged on the side wall of the locking column, a fixing groove is formed in the stud, the stop block is matched with the fixing groove, one end of the locking column is provided with a sleeve shaft, the sleeve shaft is rotatably connected with the bottom of the first opening hole, a torsion spring is arranged on the sleeve shaft, the other end of the locking column is provided with a butt joint hole, the opening block is arranged on one side of the locking column, one end of the opening block is provided with a jack, a rotating groove is formed in the jack, the other end of the opening block is provided with a connecting column, the connecting column is matched with the butt joint hole, a second spring is arranged on the connecting column, one end of the second spring is connected with the inner wall.
Preferably, the upper inner wall of the first opening hole is provided with a pressure groove, a pressure column is arranged in the pressure groove, the pressure column is provided with a baffle ring, a third spring is arranged between the baffle ring and the bottom of the pressure groove, and the lower end of the pressure column is pressed on the upper end face of the stop block.
Preferably, a second opening hole is formed in the end portion of the second clamp half body, a pressure plate groove is formed in the upper portion of the bottom of the second opening hole and communicated with a second screw hole, the fixing piece comprises an opening column and a fixing plate, one end of the opening column is connected with the fixing plate, the opening column is matched with the second opening hole, the fixing plate is arranged in the pressure plate groove, a fixing column is arranged on one side of the fixing plate, a fixing hole is formed in the stud, the fixing column is matched with the fixing hole, and a first spring is arranged on one side, away from the fixing column, of the fixing plate.
Preferably, one end of the key body is provided with a rotating handle, a stop lever is arranged on the side wall of the key body, the key body is matched with the jack, the stop lever is matched with the rotating groove, and the ejector rod is matched with the second opening hole.
Preferably, the rotating handle is connected with the ejector rod through a connecting rod, the connecting rod is sleeved on the outer side of the ejector rod and is in sliding connection with the ejector rod, a limiting ring is arranged at one end of the ejector rod, and an ejector block is arranged at the other end of the ejector rod.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the locking block is arranged in the first clamp body, the fixing piece is arranged in the second clamp half body, the screw column is self-locked through the locking block and the fixing piece, the clamp cannot be opened even if the first nut and the second nut are taken down from the screw column, the problem that the clamp is easy to open on the existing oil well pipeline is solved, the use safety of the clamp is improved, illegal persons are prevented from stealing oil, and the loss of national resources is avoided.
2. The protective cap can protect the joint of the clamp, prevent rainwater erosion, prevent the internal locking block and the fixing piece from rusting, ensure the use reliability of the clamp, prolong the service life and facilitate later-stage disassembly and assembly.
3. According to the invention, the anti-slip strips are arranged on the inner walls of the first clamp half body and the second clamp half body, so that the connection firmness can be increased, and meanwhile, the anti-slip strips can prevent a petroleum pipeline from being scratched, and the damage is avoided.
4. The lock block comprises the unlocking block and the lock column, and the limit of the stop block on the stud can be released only by connecting the unlocking block with the lock column through the unlocking key and rotating the unlocking block, so that the double protection of unlocking is realized, the use is safer and more reliable, and the safety level is improved.
5. According to the invention, the pressure column is arranged in the pressure groove, the third spring is arranged between the baffle ring and the bottom of the pressure groove, the lower end of the pressure column is pressed on the upper end surface of the stop block, and the stop block is firmly pressed and fixed by the pressure column through the elasticity of the third spring, so that the locking firmness of the stop block is improved, the problem caused by the failure of the torsion spring in long-term use is avoided, and the use is more reliable.
6. The stud is provided with the fixing hole, the fixing column is matched with the fixing hole, the side, away from the fixing column, of the fixing plate is provided with the first spring, the stud is automatically fixed under the action of the first spring, the use is convenient, and the safety performance of stud connection is improved.
7. The rotating handle is connected with the ejector rod through the connecting rod, loss is avoided, the use is convenient, the connecting rod is sleeved on the outer side of the ejector rod and is in sliding connection with the ejector rod, the limiting ring is arranged at one end of the ejector rod, the ejector block is arranged at the other end of the ejector rod, the ejector rod is prevented from falling off the connecting rod, meanwhile, the use convenience of the ejector rod is improved, the pressing is convenient, and the use is convenient.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure with the protective cap removed;
FIG. 3 is a partial cross-sectional view of the present invention;
FIG. 4 is a partial vertical cross-sectional view of the first clip half;
FIG. 5 is a partial vertical cross-sectional view of the second clip half;
FIG. 6 is a cross-sectional view of the helmet;
FIG. 7 is a schematic view of the key;
FIG. 8 is a schematic view of the lock cylinder;
FIG. 9 is a schematic view of the fastener;
FIG. 10 is a schematic view of a stud.
In the figure: 1-protective cap; 101-a sealing plug; 102-anti-drop holes; 2-a first clamp half; 201-first connecting groove 202-first opening hole; 203-pressing groove; 3-a second clamp half; 301-a first connecting slot; 302-a second opening hole; 303-a platen groove; 4-anti-slip strips; 5-a stud; 501-a first nut; 502-a second nut; 503-fixing groove; 504-fixation holes; 6-a fixing piece; 601-opening the column; 602-a fixed plate; 603-fixing columns; 604 a first spring; 7-locking the block; 701-opening block; 702-a rotary groove; 703-a jack; 704-connecting column; 705-a second spring; 706-torsion spring; 707-docking hole; 708-a stop; 709-sleeve shaft; 710-a lock cylinder; 8-pressing the column; 801-third spring; 802-baffle ring; 9-opening the key; 901-handle turning; 902-a connecting rod; 903-a limit ring; 904-mandril; 905-a top block; 906-the key body; 907-stop lever.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-10, an oil production wellhead anti-theft clamp comprises a first clamp half body 2 and a second clamp half body 3, wherein the first clamp half body 2 is provided with a first screw hole, the second clamp half body 3 is provided with a second screw hole, a stud 5 is arranged in the first screw hole and the second screw hole, the anti-theft clamp further comprises a protective cap 1, a fixing member 6, a locking block 7, a compression column 8 and an opening key 9, two ends of the stud 5 are respectively provided with a first nut 501 and a second nut 502, the first nut 501 is connected with the first clamp half body 2, the second nut 502 is connected with the second clamp half body 3, the connecting end portion of the first clamp half body 2 and the second clamp half body 3 is provided with the protective cap 1, the locking block 7 is arranged inside the first clamp half body 2, the locking block 7 is connected with the stud 5, the fixing member 6 is arranged inside the second clamp half body 3, and the stud 5 is connected with the fixing member 6, the opening key 9 includes a key body 906 for opening the lock block 7 and a plunger 904 for opening the holder 6.
The upper end of first clamp half body 2 is equipped with first connecting groove 201, the upper end of second clamp half body 3 is equipped with second connecting groove 301, first connecting groove 201 corresponds the setting with second connecting groove 301, be equipped with anticreep hole 102 on the helmet 1, anticreep hole 102 is equipped with the anticreep post, the anticreep post cooperates with first connecting groove 201, second connecting groove 301 respectively, and the upper end of anticreep hole 102 is equipped with sealing plug 101.
The up end slope of helmet 1 sets up, and helmet 1 prevents the erosion of rainwater, avoids inside locking piece and mounting to rust, guarantees the reliability that the clamp used, improves life, the dismouting in the later stage of being convenient for.
All be equipped with antislip strip 4 on the inner wall of first clamp half body 2 and second clamp half body 3, can increase the fastness of connecting, the antislip strip can prevent fish tail petroleum pipeline simultaneously, avoids the damage.
The end of the first clamp half body 2 is provided with a first opening hole 202, the first opening hole 202 is communicated with a first screw hole, the locking block 7 comprises an opening block 701 and a locking column 710, the side wall of the locking column 710 is provided with a stop 708, the stud 5 is provided with a fixing groove 503, the stop 708 is matched with the fixing groove 503, one end of the locking column 710 is provided with a sleeve shaft 709, the sleeve shaft 709 is rotatably connected with the bottom of the first opening hole 202, the sleeve shaft 709 is provided with a torsion spring 706, the other end of the locking column 710 is provided with a butt joint hole 707, the opening block 701 is arranged at one side of the locking column 710, one end of the opening block 701 is provided with a jack 703, the jack 703 is internally provided with a rotary groove 702, the other end of the opening block 701 is provided with a connecting column 704, the connecting column 704 is matched with the butt joint hole 707, the connecting column 704 is provided with a second spring 705, one end of the second, the other end of the second spring 705 is connected to the opening block 701. The limit of the stop block to the stud can be removed only by connecting the unlocking block with the lock cylinder and rotating the unlocking block through the unlocking key, so that the dual protection of unlocking is realized, the use is safer and more reliable, and the safety level is improved
The last inner wall of first opening hole 202 is equipped with indent 203, be equipped with compression leg 8 in the indent 203, be equipped with on the compression leg 8 and keep off ring 802, keep off and be equipped with third spring 801 between the bottom of ring 802 and indent 203, the lower extreme of compression leg 8 is pressed in the up end of dog 708, and elasticity through the third spring makes the compression leg firmly compress tightly the dog fixedly, has improved the fastness of dog closure, avoids the problem that the torsional spring was used for a long time to lose efficacy and is brought, lets use more reliably.
The end of the second clamp half body 3 is provided with a second opening hole 302, a pressure plate groove 303 is arranged above the bottom of the second opening hole 302, the pressure plate groove 303 is communicated with a second screw hole, the fixing member 6 comprises an opening column 601 and a fixing plate 602, one end of the opening column 601 is connected with the fixing plate, the opening column 601 is matched with the second opening hole 302, the fixing plate 602 is arranged in the pressure plate groove 303, one side of the fixing plate 602 is provided with a fixing column 603, the stud 5 is provided with a fixing hole 504, the fixing column 603 is matched with the fixing hole 504, one side of the fixing plate 602, which is far away from the fixing column 603, is provided with a first spring 604, the stud is automatically fixed under the action of the first spring, the use is convenient, and the safety performance of stud connection is improved.
One end of the key body 906 is provided with a rotating handle 901, the side wall of the key body 906 is provided with a stop lever 907, the key body 906 is matched with the jack 703, the stop lever 907 is matched with the rotating groove 702, and the ejector rod 904 is matched with the second opening hole 302.
The turning handle 901 is connected with the ejector rod 904 through a connecting rod 902, the connecting rod 902 is sleeved outside the ejector rod 904 and is in sliding connection with the ejector rod 904, one end of the ejector rod 904 is provided with a limiting ring 903, the other end of the ejector rod is provided with an ejector block 905 which avoids being lost, the use is convenient, the ejector rod is prevented from falling off from the connecting rod, the convenience in use of the ejector rod is increased, and the pressing and the use are convenient.
During the use, first clamp body 2 is connected through double-screw bolt 5 with second clamp body 3, dog 708 and fixed orifices 504 cooperation, fixed column 603 and fixed orifices 504 cooperation, realize the lock and the fixing to double-screw bolt 5, then cover the tip at the clamp with helmet 1, when opening, screw down first nut 501 and second nut 502, insert key body 906 in jack 703, pin 907 and commentaries on classics groove 702 cooperation, press key body 906, make spliced pole 704 be connected and rotate turning handle 901 with butt joint hole 707, will open post 601 fore-set simultaneously through ejector pin 904, just can take out double-screw bolt 5, thereby open the clamp. According to the invention, the locking block is arranged in the first clamp body, the fixing piece is arranged in the second clamp half body, the screw column is self-locked through the locking block and the fixing piece, the clamp cannot be opened even if the first nut and the second nut are taken down from the screw column, the problem that the clamp is easy to open on the existing oil well pipeline is solved, the use safety of the clamp is improved, illegal persons are prevented from stealing oil, and the loss of national resources is avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The utility model provides an oil recovery well head theftproof clamp, includes first clamp halfbody (2), second clamp halfbody (3), is equipped with first screw on first clamp halfbody (2), is equipped with the second screw on second clamp halfbody (3), is equipped with double-screw bolt (5), its characterized in that in first screw and the second screw: the anti-theft lock is characterized by further comprising a protective cap (1), a fixing piece (6), a locking block (7), a compression column (8) and an opening key (9), wherein a first nut (501) and a second nut (502) are respectively arranged at two ends of the stud (5), the first nut (501) is connected with the first clamp half body (2), the second nut (502) is connected with the second clamp half body (3), the protective cap (1) is arranged at the connecting end part of the first clamp half body (2) and the second clamp half body (3), the locking block (7) is arranged inside the first clamp half body (2), the locking block (7) is connected with the stud (5), the fixing piece (6) is arranged inside the second clamp half body (3), the fixing piece (6) is connected with the stud (5), the opening key (9) comprises a key body (906) for opening the locking block (7) and an ejector rod (904) for opening the fixing piece (6), a second opening hole (302) is formed in the end portion of the second clamp half body (3), a pressure plate groove (303) is formed in the upper portion of the bottom of the second opening hole (302), the pressure plate groove (303) is communicated with a second screw hole, the fixing piece (6) comprises an opening column (601) and a fixing plate (602), one end of the opening column (601) is connected with the fixing plate, the opening column (601) is matched with the second opening hole (302), the fixing plate (602) is arranged in the pressure plate groove (303), a fixing column (603) is arranged on one side of the fixing plate (602), a fixing hole (504) is formed in the stud (5), the fixing column (603) is matched with the fixing hole (504), a first spring (604) is arranged on one side, far away from the fixing column (603), of the fixing plate (602), a rotating handle (906) is arranged at one end of the key body (906), and a blocking rod (907) is arranged on the side wall of the, the key comprises a key body (906) and a jack (703), a stop lever (907) is matched with a rotary groove (702), a push rod (904) is matched with a second opening hole (302), a rotary handle (901) is connected with the push rod (904) through a connecting rod (902), the connecting rod (902) is sleeved on the outer side of the push rod (904) and is in sliding connection with the push rod (904), a limit ring (903) is arranged at one end of the push rod (904), and a top block (905) is arranged at the other end of the push rod.
2. A production wellhead anti-theft clamp as claimed in claim 1, wherein: the upper end of first clamp half body (2) is equipped with first connecting groove (201), the upper end of second clamp half body (3) is equipped with second connecting groove (301), first connecting groove (201) correspond the setting with second connecting groove (301), be equipped with anticreep hole (102) on helmet (1), anticreep hole (102) are equipped with the anticreep post, the anticreep post cooperates with first connecting groove (201), second connecting groove (301) respectively, and the upper end in anticreep hole (102) is equipped with sealing plug (101).
3. A production wellhead anti-theft clamp as claimed in claim 2, wherein: the upper end face of the protective cap (1) is obliquely arranged.
4. A production wellhead anti-theft clamp as claimed in claim 1, wherein: and anti-slip strips (4) are arranged on the inner walls of the first clamp half body (2) and the second clamp half body (3).
5. A production wellhead anti-theft clamp as claimed in claim 1, wherein: the end part of the first clamp half body (2) is provided with a first opening hole (202), the first opening hole (202) is communicated with a first screw hole, the locking block (7) comprises an opening block (701) and a locking column (710), a stop block (708) is arranged on the side wall of the locking column (710), a fixing groove (503) is arranged on the stud (5), the stop block (708) is matched with the fixing groove (503), one end of the locking column (710) is provided with a sleeve shaft (709), the sleeve shaft (709) is rotatably connected with the bottom of the first opening hole (202), the sleeve shaft (709) is provided with a torsion spring (706), the other end of the locking column (710) is provided with a butt joint hole (707), the opening block (701) is arranged on one side of the locking column (710), one end of the opening block (701) is provided with a jack (703), a rotary groove (702) is arranged in the jack (703), and the other end of the opening block (701) is provided with, the connecting column (704) is matched with the butt joint hole (707), a second spring (705) is arranged on the connecting column (704), one end of the second spring (705) is connected with the inner wall of the first opening hole (202), and the other end of the second spring (705) is connected with the opening block (701).
6. A production wellhead anti-theft clamp as claimed in claim 5, wherein: the upper inner wall of the first opening hole (202) is provided with a pressure groove (203), a pressure column (8) is arranged in the pressure groove (203), the pressure column (8) is provided with a baffle ring (802), a third spring (801) is arranged between the baffle ring (802) and the bottom of the pressure groove (203), and the lower end of the pressure column (8) is pressed on the upper end face of the stop block (708).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146874.0A CN109812242B (en) | 2019-02-27 | 2019-02-27 | Oil recovery well head theftproof clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146874.0A CN109812242B (en) | 2019-02-27 | 2019-02-27 | Oil recovery well head theftproof clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109812242A CN109812242A (en) | 2019-05-28 |
| CN109812242B true CN109812242B (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910146874.0A Active CN109812242B (en) | 2019-02-27 | 2019-02-27 | Oil recovery well head theftproof clamp |
Country Status (1)
| Country | Link |
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| CN (1) | CN109812242B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856493A (en) * | 2022-03-08 | 2022-08-05 | 江苏恒达机械制造有限公司 | Theftproof clamp device that oil recovery well head was used |
Citations (7)
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|---|---|---|---|---|
| CN2115381U (en) * | 1991-05-31 | 1992-09-09 | 邹宪阁 | Multifunction anti-theft lock |
| CN2202839Y (en) * | 1994-11-02 | 1995-07-05 | 张必龙 | Theft-proof hoop |
| CN2750038Y (en) * | 2004-05-16 | 2006-01-04 | 赵贵明 | Theft-proof collar clamp |
| CN201407006Y (en) * | 2009-04-22 | 2010-02-17 | 张春来 | Security clamping hoop for wellhead of oil well or water well |
| CN202144824U (en) * | 2011-07-16 | 2012-02-15 | 王宇超 | Anti-theft bolt |
| CN202791026U (en) * | 2012-09-13 | 2013-03-13 | 唐武 | Anti-theft hoop |
| KR101559084B1 (en) * | 2014-09-22 | 2015-10-12 | 이영찬 | Bushing for pressurizing bilaterally and clamp for connecting pipes comprising the bushing |
-
2019
- 2019-02-27 CN CN201910146874.0A patent/CN109812242B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| CN2115381U (en) * | 1991-05-31 | 1992-09-09 | 邹宪阁 | Multifunction anti-theft lock |
| CN2202839Y (en) * | 1994-11-02 | 1995-07-05 | 张必龙 | Theft-proof hoop |
| CN2750038Y (en) * | 2004-05-16 | 2006-01-04 | 赵贵明 | Theft-proof collar clamp |
| CN201407006Y (en) * | 2009-04-22 | 2010-02-17 | 张春来 | Security clamping hoop for wellhead of oil well or water well |
| CN202144824U (en) * | 2011-07-16 | 2012-02-15 | 王宇超 | Anti-theft bolt |
| CN202791026U (en) * | 2012-09-13 | 2013-03-13 | 唐武 | Anti-theft hoop |
| KR101559084B1 (en) * | 2014-09-22 | 2015-10-12 | 이영찬 | Bushing for pressurizing bilaterally and clamp for connecting pipes comprising the bushing |
Non-Patent Citations (1)
| Title |
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| 油新型水井防盗卡箍的研制与应用;岳红利等;《科技与企业》;20110922(第10期);第124页 * |
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| CN109812242A (en) | 2019-05-28 |
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Denomination of invention: Anti theft clamp for oil production wellhead Effective date of registration: 20221109 Granted publication date: 20210326 Pledgee: Agricultural Bank of China Limited Binhai County sub branch Pledgor: JIANGSU XIONGYUE PETROLEUM MECHANICAL EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: Y2022980021400 |