CN215339640U - Eddy current pulse thermal imaging pressure pipeline weld defect detection device - Google Patents
Eddy current pulse thermal imaging pressure pipeline weld defect detection device Download PDFInfo
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- CN215339640U CN215339640U CN202120780194.7U CN202120780194U CN215339640U CN 215339640 U CN215339640 U CN 215339640U CN 202120780194 U CN202120780194 U CN 202120780194U CN 215339640 U CN215339640 U CN 215339640U
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Abstract
The utility model relates to the technical field of pulse imaging detection equipment, in particular to a welding seam defect detection device for an eddy current pulse thermal imaging pressure pipeline. The device is provided with the pulse imager, the pulse imager is used for carrying out nondestructive testing on a product, the product is fixed through the mounting discs at two ends of the case when the device is used, then the induction heater is controlled to operate and is electrically connected with the coil, the induction heater controls the coil to heat, then heat is conducted to a workpiece to be tested through the channel, then induction eddy current imaging is released through the pulse imager, the workpiece to be tested is displayed on the PC, and the data of the workpiece to be tested is observed through the PC, so that the effect of nondestructive testing can be achieved.
Description
Technical Field
The utility model relates to the technical field of pulse imaging detection equipment, in particular to a welding seam defect detection device for an eddy current pulse thermal imaging pressure pipeline.
Background
Through the pulse test, engineering technicians can obtain more device information, more accurately analyze and master the behavior characteristics of the device, a common pulse detection device can cause certain damage to a product, and nondestructive detection is a key technology for ensuring the quality of the product.
This product uses the thermal imaging technique of electric eddy current pulse to detect the product, can effectually avoid the damage of product.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for detecting the weld defects of a pressure pipeline by eddy current pulse thermal imaging, which aims to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
a welding seam defect detection device for an eddy current pulse thermal imaging pressure pipeline comprises a case, a PC (personal computer), a clamping mechanism, a transmission mechanism, a heating mechanism and a pulse imager, wherein the clamping mechanism comprises a motor, a shell, a sleeve, a connecting rod, a mounting disc, a fixed cylinder, a groove and a spring chuck;
through the above scheme, through setting up the pulse imager, this device uses the pulse imager to carry out nondestructive test to the product, it is fixed with the mounting disc that the product passes through quick-witted case both ends during the use, then control induction heater operation, induction heater and coil electric connection, induction heater control coil heating, then give the detected work piece with heat conduction through the passageway, after that release induction eddy current imaging to it through the pulse imager, show it on the PC, observe the data that are detected the work piece through the PC, thereby reach the effect that can nondestructive test.
Preferably, the two sides of the top of the case are both provided with second sliding grooves, the interiors of the second sliding grooves on the two sides are both movably provided with a shell, the outer side of the shell is fixedly provided with a motor, one side of the shell, far away from the motor, is fixedly connected with a sleeve, the output end of the motor is fixedly connected with a mounting disc through a connecting rod, one end of the mounting disc, far away from the connecting rod, is fixedly connected with a fixed cylinder, and the exterior of the fixed cylinder is movably provided with a spring chuck through a groove;
through the scheme, by arranging the clamping mechanism, when a detected workpiece needs to be clamped, the workpiece is placed from the position of the L-shaped support, then the shell is moved towards the middle part through the motor, the detected pipeline is sleeved through the fixing cylinders at the two ends, meanwhile, the spring clamping heads arranged on the outer sides of the fixing cylinders can be clamped with the inner wall of the pipeline, then the motor is operated, the motor can drive the mounting disc to slowly rotate through the connecting rod, so that the pulse imager can gradually image the whole pipeline, and the effect of facilitating clamping is achieved;
preferably, mounting seats are fixedly mounted on the outer portions of two sides of the case, motors are fixedly mounted on the tops of the mounting seats on the two sides through the base, the output ends of the motors are fixedly connected with screws, a first sliding groove is formed in the case close to the outer portions of the screws, and the screws are in threaded connection with the bottom of the shell;
through the scheme, by arranging the transmission mechanism, when a workpiece needs to be clamped, the motor is operated firstly, the motor can drive the screw rod to rotate in the first sliding groove, the shell is driven to move towards the middle of the top plate, the two ends of the detected pipeline are used for clamping, after the use is finished, the shells at the two ends are separated through the turnover of the screw rod, the detected workpiece is convenient to take in the later period, and therefore the effect of convenient movement is achieved;
preferably, a top plate is fixedly installed at the top of the case, a channel is formed between the top plate and the middle of the case, an induction heater is arranged at the bottom of the channel, a supporting plate is fixedly installed at the middle of the channel, a fixing column is arranged at the top of the supporting plate, and a coil is sleeved outside the fixing column;
by the scheme, the heating mechanism is arranged, after the workpiece is clamped, the induction heater can control the coil to operate, and the high temperature generated by the coil can heat the detected pipeline, so that the effect of convenient heating is achieved;
preferably, a square plate is fixedly installed at the top end of the middle part of the top plate, four corners of the top of the square plate are fixedly connected with rubber columns, a guard plate is fixedly connected between the tops of the rubber columns at the four corners, a ceramic plate is fixedly installed at the middle part of the square plate, and a plurality of inner holes are formed in the ceramic plate;
according to the scheme, by arranging the ceramic plate, when heating is conducted, in order to avoid high-temperature scalding, the square plate is arranged in the middle of the top end of the top plate, the ceramic plate is arranged inside the square plate, the inner hole is formed inside the ceramic plate, the guard plates are fixedly arranged at the tops of the four corners of the square plate through the rubber columns, the rubber columns and the guard plates are made of rubber materials, the heat conduction effect is poor, and the protection effect can be achieved;
preferably, a PC is fixedly installed on one side of the case, a fixing support is fixedly installed at the top of one side, away from the PC, of the top plate, an L-shaped support is fixedly installed on one side, away from the fixing support, of the top plate, a platform is fixedly installed between the fixing support and the top of the L-shaped support, a pulse imager is fixedly installed at the top of the platform, and infrared induction heads are fixedly installed on two sides of the interior of the L-shaped support;
through the scheme, the infrared sensing head is arranged, when the induction heater needs to be controlled to operate, when a workpiece needing to be detected is placed in the L-shaped support through the position of the L-shaped support, the infrared sensing head can sense the workpiece and then control the induction heater to be started, after the detection is finished, the workpiece is moved out of the L-shaped support again, the infrared sensing head can control the induction heater to be stopped again, and therefore the effect of automatic starting and stopping is achieved;
preferably, the channel is fixedly provided with a heat insulation plate close to the bottom of the support plate;
by the scheme, the induction heater is prevented from being influenced by high temperature generated when the coil is heated by arranging the heat insulation plate and arranging the heat insulation plate at the top of the induction heater, so that the heat insulation effect is achieved;
preferably, an annular groove is formed in one side, away from the connecting rod, of the mounting disc;
through the scheme, the annular groove is formed in the mounting disc, the two ends of the pipeline can be clamped and matched with the spring clamp head, and the connecting rod can be conveniently driven to rotate the pipeline when driving the mounting disc to rotate, so that the guiding and limiting effects are achieved.
Compared with the prior art, the utility model has the beneficial effects that:
1. this electric eddy current pulse thermal imaging pipeline under pressure welding seam defect detection device, through setting up the pulse imager, this device uses the pulse imager to carry out nondestructive test to the product, it is fixed with the mounting disc that the product passes through quick-witted case both ends during the use, then control induction heater operation, induction heater and coil electric connection, induction heater control coil heating, then give the detected work piece with the heat conduction through the passageway, release induction eddy current imaging to it through the pulse imager after that, show it on the PC, observe the data that are detected the work piece through the PC, thereby reach the effect that can nondestructive test.
2. This electric eddy current pulse thermal imaging pressure pipeline welding seam defect detecting device, through setting up fixture, when the required centre gripping is detected the work piece, put into the work piece from the position of L type support, then move the shell toward the middle part through the motor, the solid fixed cylinder entangles the pipeline that is detected through both ends after that, the inner wall that the spring dop of solid fixed cylinder outside installation can the joint pipeline simultaneously, the operation motor after that, the motor can drive the mounting disc through the connecting rod and slowly rotate, make pulse imager can be whole progressively formation of image with the pipeline, thereby reach the effect of making things convenient for the centre gripping.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a fixture mounting structure of the present invention;
FIG. 3 is a schematic view of an induction heater mounting structure of the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;
FIG. 5 is an enlarged view of the utility model at B of FIG. 2;
fig. 6 is an enlarged view of the utility model at C in fig. 2.
In the figure: 1. a chassis; 2. a PC machine; 3. a clamping mechanism; 4. a transmission mechanism; 5. a heating mechanism; 6. a motor; 7. a housing; 8. a sleeve; 9. a connecting rod; 10. mounting a disc; 11. a fixed cylinder; 12. a groove; 13. a spring clip; 14. a mounting seat; 15. a machine base; 16. a motor; 17. a first chute; 18. a screw; 19. a square plate; 20. a rubber column; 21. a guard plate; 22. a ceramic plate; 23. an inner bore; 24. a second chute; 25. a top plate; 26. a channel; 27. an induction heater; 28. a support plate; 29. fixing a column; 30. a coil; 31. a pulse imager; 32. fixing a bracket; 33. an L-shaped bracket; 34. a platform; 35. an infrared sensing head; 36. a heat insulation plate; 37. an annular groove.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 to fig. 6, a technical solution provided by the present invention is:
a welding seam defect detection device for an eddy current pulse thermal imaging pressure pipeline comprises a case 1, a PC (personal computer) 2, a clamping mechanism 3, a transmission mechanism 4, a heating mechanism 5 and a pulse imager 31, wherein the clamping mechanism 3 comprises a motor 6, a shell 7, a sleeve 8, a connecting rod 9, a mounting disc 10, a fixed cylinder 11, a groove 12 and a spring chuck 13, the transmission mechanism 4 comprises a mounting seat 14, a machine seat 15, a motor 16, a first chute 17 and a screw 18, and the heating mechanism 5 comprises a square plate 19, a rubber column 20, a guard plate 21, a ceramic plate 22 and an inner hole 23;
through the above scheme, through setting up pulse imager 31, this device uses pulse imager 31 to carry out nondestructive test to the product, it is fixed with the product through the mounting disc 10 at quick-witted case 1 both ends during the use, then control induction heater 27 operation, induction heater 27 and coil 30 electric connection, induction heater 27 control coil 30 heats, then give the work piece that is detected with heat conduction through passageway 26, release induction eddy current imaging to it through pulse imager 31 after that, show it on PC 2, observe the data that are detected the work piece through PC 2, thereby reach the effect that can nondestructive test.
In this embodiment, preferably, the two sides of the top of the chassis 1 are both provided with second chutes 24, the interiors of the second chutes 24 on the two sides are both movably provided with the housing 7, the outer side of the housing 7 is fixedly provided with the motor 6, one side of the housing 7, which is far away from the motor 6, is fixedly connected with the sleeve 8, the output end of the motor 6 is fixedly connected with the mounting disc 10 through the connecting rod 9, one end of the mounting disc 10, which is far away from the connecting rod 9, is fixedly connected with the fixed cylinder 11, and the exterior of the fixed cylinder 11 is movably provided with the spring chuck 13 through the groove 12;
through the scheme, by arranging the clamping mechanism 3, when a detected workpiece needs to be clamped, the workpiece is placed from the position of the L-shaped support 33, then the shell 7 is moved towards the middle part through the motor 16, then the detected pipeline is sleeved through the fixed cylinders 11 at the two ends, meanwhile, the spring clamping heads 13 arranged on the outer sides of the fixed cylinders 11 can be clamped on the inner wall of the pipeline, then the motor 6 is operated, the motor 6 can drive the mounting disc 10 to slowly rotate through the connecting rod 9, so that the pulse imager 31 can gradually image the whole pipeline, and the effect of facilitating clamping is achieved;
in this embodiment, preferably, the mounting seats 14 are fixedly mounted on the outer portions of the two sides of the chassis 1, the motors 16 are fixedly mounted on the tops of the mounting seats 14 on the two sides through the bases 15, the output ends of the motors 16 are fixedly connected with the screws 18, the first sliding grooves 17 are formed in the outer portions, close to the screws 18, of the chassis 1, and the screws 18 are in threaded connection with the bottom of the shell 7;
through the scheme, by arranging the transmission mechanism 4, when a workpiece needs to be clamped, firstly, the motor 16 is operated, the motor 16 can drive the screw rod 18 to rotate in the first sliding groove 17, meanwhile, the shell 7 is driven to move towards the middle of the top plate 25, the pipeline to be detected is clamped by using two ends, and after the pipeline is used, the shells 7 at the two ends are separated by overturning the screw rod 18, so that the workpiece which is detected is conveniently taken in the later period, and the effect of convenient movement is achieved;
in this embodiment, preferably, a top plate 25 is fixedly mounted on the top of the chassis 1, a channel 26 is formed between the top plate 25 and the middle of the chassis 1, an induction heater 27 is arranged at the bottom of the channel 26, a supporting plate 28 is fixedly mounted in the middle of the channel 26, a fixing column 29 is arranged on the top of the supporting plate 28, and a coil 30 is sleeved outside the fixing column 29;
by the scheme, the heating mechanism 5 is arranged, after the workpiece is clamped, the induction heater 27 can control the coil 30 to operate, and the high temperature generated by the coil 30 can heat the detected pipeline, so that the effect of convenient heating is achieved;
in the embodiment, preferably, a square plate 19 is fixedly installed at the top end of the middle part of the top plate 25, four corners of the top part of the square plate 19 are fixedly connected with rubber columns 20, a guard plate 21 is fixedly connected between the tops of the four corner rubber columns 20, a ceramic plate 22 is fixedly installed at the middle part of the square plate 19, and a plurality of inner holes 23 are formed in the ceramic plate 22;
through the scheme, by arranging the ceramic plate 22, when heating is performed, in order to avoid high-temperature scalding, the square plate 19 is arranged in the middle of the top end of the top plate 25, the ceramic plate 22 is arranged inside the square plate 19, the inner hole 23 is formed inside the ceramic plate 22, the guard plates 21 are fixedly arranged at the tops of four corners of the square plate 19 through the rubber columns 20, the rubber columns 20 and the guard plates 21 are made of rubber materials, the heat conduction effect is poor, and the protection effect can be achieved;
in this embodiment, preferably, the PC 2 is fixedly mounted on one side of the chassis 1, the fixing support 32 is fixedly mounted on the top of one side of the top plate 25 away from the PC 2, the L-shaped support 33 is fixedly mounted on one side of the top plate 25 away from the fixing support 32, the platform 34 is fixedly mounted between the fixing support 32 and the top of the L-shaped support 33, the pulse imager 31 is fixedly mounted on the top of the platform 34, and the infrared sensing heads 35 are fixedly mounted on both sides inside the L-shaped support 33;
through the scheme, by arranging the infrared sensing head 35, when the induction heater 27 needs to be controlled to operate, a workpiece to be detected is placed through the position of the L-shaped support 33, the infrared sensing head 35 can sense and then control the induction heater 27 to be started, after the detection is finished, the workpiece is moved out of the position of the L-shaped support 33 again, the infrared sensing head 35 can control the induction heater 27 to be stopped again, and therefore the effect of automatic start and stop is achieved;
in this embodiment, preferably, the channel 26 is fixedly mounted with a heat shield 36 near the bottom of the support plate 28;
through the scheme, the heat insulation plate 36 is arranged, and the heat insulation plate 36 is arranged at the top of the induction heater 27, so that the induction heater 27 can be prevented from being influenced by high temperature generated when the coil 30 is heated, and the heat insulation effect is achieved;
in this embodiment, preferably, an annular groove 37 is formed in one side of the mounting plate 10 away from the connecting rod 9;
through the above scheme, through setting up ring channel 37, ring channel 37 of volume is seted up to the inside in mounting disc 10, can with the centre gripping of pipeline both ends, again with the cooperation of spring dop 13, when making things convenient for connecting rod 9 to drive mounting disc 10 and rotate, can drive the pipeline rotation in step to reach direction and spacing effect.
When the eddy current pulse thermal imaging pressure pipeline welding seam defect detection device of the embodiment is used, the pulse imager 31 is arranged, the device carries out nondestructive detection on a product by using the pulse imager 31, the product is fixed by the mounting discs 10 at two ends of the case 1 when the device is used, then the induction heater 27 is controlled to operate, the induction heater 27 is electrically connected with the coil 30, the induction heater 27 controls the coil 30 to heat, then the heat is conducted to a detected workpiece through the channel 26, then the induction eddy current imaging is released by the pulse imager 31 to be displayed on the PC 2, the data of the detected workpiece is observed through the PC 2, so that the nondestructive detection effect is achieved, through the transmission mechanism 4, when the workpiece needs to be clamped, the motor 16 operates firstly, the motor 16 drives the screw rod 18 to rotate in the first chute 17, and drives the shell 7 to move towards the middle part of the top plate 25, the pipeline to be detected is clamped by using two ends, after the pipeline is used, the shells 7 at the two ends are separated by turning the screw rods 18, the workpiece to be detected is convenient to take in the later period, so that the effect of convenient movement is achieved, by arranging the clamping mechanism 3, when the workpiece to be detected needs to be clamped, the workpiece is put in from the position of the L-shaped bracket 33, then the shell 7 is moved towards the middle part through the motor 16, then the pipeline to be detected is sleeved by the fixing cylinders 11 at the two ends, meanwhile, the spring chucks 13 arranged on the outer sides of the fixing cylinders 11 can be clamped on the inner wall of the pipeline, then the motor 6 is operated, the motor 6 can drive the mounting disc 10 to slowly rotate through the connecting rod 9, so that the pulse imager 31 can gradually image the whole pipeline, the effect of convenient clamping is achieved, by arranging the heating mechanism 5, after the workpiece is clamped, the induction heater 27 can control the coil 30 to operate, the high temperature generated by the coil 30 heats the pipe to be tested, thereby achieving the effect of convenient heating.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an electric eddy current pulse thermal imaging pressure pipeline welding seam defect detecting device, includes quick-witted case (1), PC (2), fixture (3), drive mechanism (4), heating mechanism (5) and pulse imager (31), its characterized in that: fixture (3) including motor (6), shell (7), sleeve (8), connecting rod (9), mounting disc (10), solid fixed cylinder (11), recess (12) and spring dop (13), drive mechanism (4) are including mount pad (14), frame (15), motor (16), first spout (17) and screw rod (18), heating mechanism (5) are including square board (19), rubber column (20), backplate (21), ceramic plate (22) and hole (23).
2. The eddy current pulse thermal imaging pressure pipeline weld defect detection device of claim 1, wherein: second spout (24), both sides have all been seted up to the top both sides of machine case (1) the equal movable mounting shell (7) in inside of second spout (24), outside fixed mounting motor (6) of shell (7), one side fixed connection sleeve (8) of motor (6) are kept away from in shell (7), connecting rod (9) fixed connection mounting disc (10) are passed through to the output of motor (6), the one end fixed connection solid fixed cylinder (11) of connecting rod (9) are kept away from in mounting disc (10), recess (12) movable mounting spring dop (13) are passed through to the outside of solid fixed cylinder (11).
3. The eddy current pulse thermal imaging pressure pipeline weld defect detection device of claim 1, wherein: the motor is characterized in that mounting seats (14) are fixedly mounted on the outer portions of two sides of the case (1), motors (16) are fixedly mounted on the tops of the mounting seats (14) through bases (15), the output ends of the motors (16) are fixedly connected with screw rods (18), first sliding grooves (17) are formed in the outer portions, close to the screw rods (18), of the case (1), and the screw rods (18) are in threaded connection with the bottom of the shell (7).
4. The eddy current pulse thermal imaging pressure pipeline weld defect detection device of claim 1, wherein: the top of the case (1) is fixedly provided with a top plate (25), a channel (26) is formed between the top plate (25) and the middle of the case (1), an induction heater (27) is arranged at the bottom of the channel (26), a supporting plate (28) is fixedly arranged in the middle of the channel (26), a fixing column (29) is arranged at the top of the supporting plate (28), and a coil (30) is sleeved outside the fixing column (29).
5. The eddy current pulse thermal imaging pressure pipeline weld defect detection device of claim 4, wherein: the middle part top fixed mounting of roof (25) square board (19), the equal fixed connection rubber column (20) in top four corners of square board (19), four corners fixed connection backplate (21) between the top of rubber column (20), the middle part fixed mounting ceramic plate (22) of square board (19), a plurality of holes (23) are seted up to the inside of ceramic plate (22).
6. The eddy current pulse thermal imaging pressure pipeline weld defect detection device of claim 4, wherein: one side fixed mounting PC (2) of machine case (1), one side top fixed mounting that PC (2) were kept away from in roof (25) has fixed bolster (32), one side fixed mounting that fixed bolster (32) were kept away from in roof (25) has L type support (33), fixed mounting has platform (34) between the top of fixed bolster (32) and L type support (33), top fixed mounting pulse imager (31) of platform (34), the equal fixed mounting in inside both sides of L type support (33) has infrared induction head (35).
7. The eddy current pulse thermal imaging pressure pipeline weld defect detection device of claim 4, wherein: the channel (26) is fixedly provided with a heat insulation plate (36) close to the bottom of the support plate (28).
8. The eddy current pulse thermal imaging pressure pipeline weld defect detection device of claim 1, wherein: an annular groove (37) is formed in one side, far away from the connecting rod (9), of the mounting disc (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120780194.7U CN215339640U (en) | 2021-04-16 | 2021-04-16 | Eddy current pulse thermal imaging pressure pipeline weld defect detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120780194.7U CN215339640U (en) | 2021-04-16 | 2021-04-16 | Eddy current pulse thermal imaging pressure pipeline weld defect detection device |
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| CN215339640U true CN215339640U (en) | 2021-12-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116275668A (en) * | 2023-05-22 | 2023-06-23 | 四川岷河管道建设工程有限公司 | Efficient pipeline welding device convenient to adjust |
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2021
- 2021-04-16 CN CN202120780194.7U patent/CN215339640U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116275668A (en) * | 2023-05-22 | 2023-06-23 | 四川岷河管道建设工程有限公司 | Efficient pipeline welding device convenient to adjust |
| CN116275668B (en) * | 2023-05-22 | 2023-07-21 | 四川岷河管道建设工程有限公司 | Efficient pipeline welding device convenient to adjust |
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