CN113358741A - Steel pipe inner wall defect detection device - Google Patents
Steel pipe inner wall defect detection device Download PDFInfo
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- CN113358741A CN113358741A CN202110860140.6A CN202110860140A CN113358741A CN 113358741 A CN113358741 A CN 113358741A CN 202110860140 A CN202110860140 A CN 202110860140A CN 113358741 A CN113358741 A CN 113358741A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
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Abstract
The invention discloses a steel pipe inner wall defect detection device, which comprises: the steel pipe positioning device comprises an installation platform, and a driving assembly and a steel pipe positioning assembly which are arranged on the installation platform; the steel pipe positioning assembly comprises at least two positioning blocks, an elastic piece is clamped between each positioning block and the mounting table, and each positioning block is provided with a positioning hole for clamping a steel pipe; the end of the driving component is provided with a probe, one end of the probe is fixed on the driving component, and the other end of the probe points to the steel pipe and can extend into the steel pipe to detect the inner wall of the steel pipe. The device has greatly reduced the probe wearing and tearing that cause because of rigid friction between steel pipe and the probe, has solved the steel pipe and to the utmost point wearing and tearing problem of probe, and to a great extent has improved the life of probe, has avoided the emergence of the dead phenomenon of probe card in the steel pipe, has reduced the trouble of preparation probe and frequent change probe, increases substantially inspection work efficiency.
Description
Technical Field
The invention relates to the technical field of steel pipe inner wall defect detection, in particular to a steel pipe inner wall defect detection device.
Background
At present, the flaw detection for the inner wall of a seamless steel pipe is mainly carried out by adopting an eddy current flaw detector, such as a high-pressure oil pipe, a high-pressure heater heat exchange pipe and the like started by an automobile, when the eddy current flaw detection is carried out on the seamless steel pipe, a probe runs in the seamless steel pipe, and because a detection output signal is influenced by a filling factor, the outer diameter of a coil of the probe is close to the inner diameter of the steel pipe as far as possible, but friction is generated between the eddy current detection probe and the steel pipe, especially when the geometric shape of the steel pipe has larger deviation and the axis is in a non-linear state, the probe is even stuck in the steel pipe, so that the service life of the probe is shortened, the manufacture and the replacement of the probe are frequent, and the normal detection work is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the device for detecting the defects of the inner wall of the steel pipe is provided.
The specific technical scheme is as follows:
a steel pipe inner wall defect detection device mainly comprises: the steel tube positioning device comprises an installation table, and a driving assembly and a steel tube positioning assembly which are arranged on the installation table;
the steel pipe positioning assembly comprises at least two positioning blocks, an elastic piece is clamped between each positioning block and the mounting table, and each positioning block is provided with a positioning hole for clamping a steel pipe;
the end part of the driving component is provided with a probe, one end of the probe is fixed on the driving component, and the other end of the probe points to the steel pipe and can extend into the steel pipe to detect the inner wall of the steel pipe.
In the steel pipe inner wall defect detection device, the positioning blocks are provided with a plurality of first mounting grooves on one side facing the mounting table, the mounting table is provided with second mounting grooves corresponding to the first mounting grooves, one end of each elastic piece is located in the first mounting groove, and the other end of each elastic piece is located in the second mounting groove.
In the above steel pipe inner wall defect detecting device, the positioning holes on each positioning block are through holes, the axes of all the positioning holes are collinear and have the same height, and the axis of the probe is collinear with the axes of all the positioning holes.
In the above apparatus for detecting defects in an inner wall of a steel pipe, the elastic member provided at the positioning block adjacent to the probe has a rigidity lower than that of the elastic member provided at the other positioning block.
In the steel pipe inner wall defect detection device, the probe is mounted on a probe guide rod, and one end of the probe guide rod, which is far away from the probe, is mounted on the driving assembly.
The steel pipe inner wall defect detection device is characterized by further comprising a bearing seat and a linear bearing, wherein the bearing seat is fixed on the mounting table, the linear bearing is arranged in the bearing seat, and the probe guide rod penetrates through the linear bearing.
The device for detecting the defects of the inner wall of the steel pipe is further characterized in that the driving assembly comprises a driving piece and a traction block, a shell of the driving piece is fixed on the mounting table, an output end of the driving piece is in driving connection with the traction block, and the traction block is fixedly connected with the probe guide rod;
the steel pipe fixing device is characterized in that at least two parallel guide rails are arranged on the mounting table, the length direction of the guide rails and the driving direction of the driving piece are parallel to the axis direction of the steel pipe, and one side, facing the mounting table, of the traction block is connected with the guide rails in a sliding mode.
The steel pipe inner wall defect detection device is characterized by further comprising a sensor, wherein the sensor is fixed on the mounting table and is arranged at an end position where the traction block moves linearly to be close to the steel pipe.
The steel pipe inner wall defect detection device is characterized by further comprising an eddy current detector, wherein the eddy current detector is arranged on the mounting table and electrically connected with the probe.
In the above apparatus for detecting defects of an inner wall of a steel pipe, the elastic member is a rubber spring.
The positive effects of the technical scheme are as follows:
the invention provides a steel pipe inner wall defect detection device, which is characterized in that an elastic part is arranged between a positioning block and an installation platform, so that when friction is generated between a detection probe and a steel pipe, particularly when the geometric shape of the steel pipe has larger deviation or the axis is in a nonlinear state, the probe is in point contact with the inner wall of the steel pipe, the steel pipe can drive the positioning block to deflect along the direction of the acting force of the probe on the contact point of the inner wall of the steel pipe under the condition that the probe is in contact with the steel pipe due to the existence of the elastic part, the rigid contact of the probe and a fixed steel pipe is avoided, the overlap ratio of the axis of the probe and the axis of the measured steel pipe is improved, the probe abrasion caused by the rigid friction between the steel pipe and the probe is greatly reduced, the problem of extreme abrasion of the steel pipe on the probe is solved, the service life of the probe is greatly prolonged, and the occurrence of the phenomenon that the probe is jammed in the steel pipe is avoided, the trouble of manufacturing the probe and frequently replacing the probe is reduced, and the inspection work efficiency is greatly improved.
Drawings
FIG. 1 is a schematic top view of a steel pipe inner wall defect detection apparatus according to the present invention;
FIG. 2 is a schematic cross-sectional view of a steel pipe inner wall defect detection apparatus according to the present invention;
fig. 3 is a schematic cross-sectional structural view of a driving assembly provided in the present invention.
In the drawings: 1. a steel pipe; 2. an installation table; 21. a second mounting groove; 3. a drive assembly; 31. a drive member; 32. a pulling block; 33. a guide rail; 4. a steel pipe positioning component; 41. positioning blocks; 411. positioning holes; 412. a first mounting groove; 5. an elastic member; 6. a probe; 61. a probe guide sphere; 7. a probe guide rod; 71. a wire; 81. a bearing seat; 82. a linear bearing; 83. a rod-shaped member; 84. a steel ring is equalized; 85. a limit nut; 9. a sensor; 10. an eddy current detector.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below by way of embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 to 3, fig. 1 is a schematic top view of a steel pipe inner wall defect detection apparatus according to the present invention; FIG. 2 is a schematic cross-sectional view of a steel pipe inner wall defect detection apparatus according to the present invention; fig. 3 is a schematic cross-sectional structural view of a driving assembly provided in the present invention. The invention discloses a steel pipe inner wall defect detection device, which comprises: the steel tube positioning device comprises a mounting table 2, and a driving assembly 3 and a steel tube positioning assembly 4 which are arranged on the mounting table 2.
The steel pipe positioning assembly 4 comprises at least two positioning blocks 41, and an elastic piece 5 is clamped between each positioning block 41 and the mounting table 2.
Optionally, one side of each positioning block 41 facing the mounting table 2 is provided with a plurality of first mounting grooves 412, the mounting table 2 is provided with second mounting grooves 21 corresponding to the first mounting grooves 412, one end of the elastic element 5 is located in the first mounting groove 412, and the other end of the elastic element is located in the second mounting groove 21.
For example, in the present embodiment, two positioning blocks 41 are provided, each positioning block 41 is provided with four first mounting grooves 412, and the second mounting grooves 21 and the elastic members 5 are also provided with four, and the two positioning blocks 41 are provided with eight first mounting grooves 412 together. The present invention is only illustrative with respect to the number of the first mounting grooves 412, the second mounting grooves 21, and the elastic members 5, and is not intended to limit the present invention.
Alternatively, the elastic member 5 is a rubber spring. Further, a rod-shaped member 83 is arranged in each elastic member 5, the rod-shaped member 83 is arranged in the elastic member 5 in a penetrating manner, one end of the rod-shaped member is fixed on the mounting table 2, and the other end of the rod-shaped member passes through the positioning block 41 and is limited by a limiting nut 85. Alternatively, the rod 83 may employ a stud bolt. Optionally, the limit nut 85 is installed at the upper end of the stud bolt, a preset distance is left between the limit nut 85 and the upper surface of the foot seat of the positioning block 41, and optionally, a distance of one millimeter is left between the limit nut 85 and the upper surface of the foot seat of the positioning block 41.
Further, both ends of the elastic member 5 are provided with pressure equalizing steel rings 84. In the embodiment, eight rubber springs are arranged and respectively sleeved on eight evenly distributed stud bolts on the mounting table 2, and the diameters and the heights of the rubber springs can be properly increased and decreased according to the mounting requirements; eight foot seat holes and stud clearance fit that set up on the locating piece 41 of steel pipe 1, first mounting groove 412 steadily detain on the rubber spring top, and limit nut 85 is twisted on the stud upper end and the distance of one millimeter of the foot seat upper surface interval of locating piece 41, and the total embedded depth of rubber spring in first mounting groove 412 and second mounting groove 21 is one half to two thirds of rubber spring length.
Each positioning block 41 is provided with a positioning hole 411 for clamping the steel pipe 1. In order to improve the coincidence ratio of the axis of the probe 6 and the axis of the steel pipe 1 to be tested, preferably, the axes of all the positioning holes 411 are collinear and have the same height, and the axis of the probe 6 is collinear with the axes of all the positioning holes 411.
In the embodiment of the two positioning blocks 41, two ends of the steel pipe 1 are respectively installed in the two positioning holes 411, preferably, the two positioning holes 411 have the same height, and the axis of the probe 6 is collinear with the axis of the two positioning holes 411.
The bottom surfaces of all the positioning blocks 41 are parallel to the upper surface of the mounting table 2 on the same horizontal plane, the height of the stud bolts and the diameter and height of the rubber springs can be increased or decreased properly according to the mounting requirements according to the processing and mounting conditions so as to ensure the mounting requirements, and the axes of the eight rubber springs are perpendicular to the upper surface of the mounting table. The end of the driving component 3 is provided with a probe 6, one end of the probe 6 is fixed on the driving component 3, and the other end points to the steel pipe 1 and can extend into the steel pipe 1 to detect the inner wall of the steel pipe 1.
Optionally, the positioning hole 411 on each positioning block 41 is a through hole, and especially the positioning hole 411 close to the probe 6 is set as a through hole, one end of the through hole is used for installing the steel pipe 1, the other end of the through hole is used for installing the probe 6, and the probe 6 extends into the through hole and extends into the steel pipe 1 for detection.
Further, the probe 6 is mounted on a probe guide 7, and an end of the probe guide 7 away from the probe 6 is mounted on the driving assembly 3. Similarly, the axial direction of the probe guide rod 7 is collinear with the axial directions of the two positioning holes 411.
Optionally, the probe 6 is further provided with a probe guide ball 61, and the probe guide ball 61 is used for contacting with the steel pipe 1 to guide the probe 6.
When the probe guide sphere 61 of the probe 6 contacts the steel pipe 1, the axis of the probe guide rod 7 does not overlap with the axis of the steel pipe 1 to be tested because one positioning block 41 far away from the probe 6 moves backwards and jumps greatly, and in this embodiment, the rigidity of the elastic member 5 arranged on the positioning block 41 near the probe 6 is preferably less than that of the elastic member 5 arranged on the other positioning block 41, that is, the rigidity of the elastic member 5 far away from one end of the probe 6 should be greater than that of the elastic member 5 near one end of the probe 6, and the seamless steel pipe is accurately positioned in the two positioning blocks 41. When the probe 6 contacts the steel pipe 1 to be detected, the steel pipe 1 to be detected is guided gradually in the automatic deviation rectifying process, and the positioning block 41 far away from the probe 6 forms a relatively stable fulcrum, so that the superposition of the axis of the probe guide rod 7 and the axis of the steel pipe 1 to be detected, which is influenced by large deviation and jumping and the oscillation of the steel pipe 1 to be detected in the automatic deviation rectifying process, is avoided.
Further, the device also comprises a bearing seat 81 and a linear bearing 82, wherein the bearing seat 81 is fixed on the mounting table 2, the linear bearing 82 is arranged in the bearing seat 81, and the probe guide rod 7 is arranged in the linear bearing 82 in a penetrating manner. The linear bearing 82 accurately guides the probe guide 7 to ensure smooth linear motion of the probe guide 7.
Optionally, the driving assembly 3 includes a driving member 31 and a dragging block 32, a housing of the driving member 31 is fixed on the mounting table 2, an output end of the driving member 31 is in driving connection with the dragging block 32, and the dragging block 32 is fixedly connected with the probe guide rod 7;
at least two parallel guide rails 33 are arranged on the mounting table 2, the length direction of the guide rails 33 and the driving direction of the driving piece 31 are parallel to the axial direction of the steel pipe 1, and one side of the traction block 32 facing the mounting table 2 is connected with the guide rails 33 in a sliding mode.
Specifically, the axis of the driving member 31 is parallel to the length direction of the guide rail 33, and both are parallel to the axis direction of the steel pipe 1, and the driving member 31 and the guide rail 33 are disposed on the side of the steel pipe positioning assembly 4. The guide rail 33 guides the movement of the drag block 32 and thus the probe 6.
The pulling block 32 is a strip-shaped member and is arranged along the direction perpendicular to the guide rail 33, one end of the pulling block 32 is arranged close to the probe 6, wherein one end close to the probe 6 is directly connected with the probe 6 or indirectly connected with the probe 6 through the probe guide rod 7, the driving member 31 drives the pulling block 32 to reciprocate linearly along the axis direction of the steel pipe 1, and then the probe 6 is driven to stretch into the steel pipe 1 to detect the inner wall of the steel pipe 1. In order to limit the movement of the probe 6, the device further comprises a sensor 9, wherein the sensor 9 is fixed on the mounting table 2, and the sensor 9 is arranged at the end position of the linear movement of the traction block 32 close to the steel pipe 1.
Alternatively, the driving member 31 may adopt an air cylinder, and the running speed and stability of the probe 6 are adjusted by an air cylinder control system, so as to provide a stable and ideal detection speed detection state for eddy current detection of the defects on the inner wall of the steel pipe 1.
Further, the eddy current testing device comprises an eddy current testing device 10, wherein the eddy current testing device 10 is arranged on the mounting table 2 and is electrically connected with the probe 6. The probe 6 continuously detects the inner wall of the steel pipe 1 in the moving process, and simultaneously transmits the detected data to the eddy current detector 10, and the eddy current detector 10 performs processing and analysis. The probe 6 is electrically connected with the eddy current tester 10 through a lead wire 71, and the lead wire 71 is positioned in the probe guide rod 7.
The steel pipe inner wall defect detection device provided by the invention has the advantages that the elastic piece 5 is arranged between the positioning block 41 and the mounting table 2, so that when friction is generated between the detection probe 6 and the steel pipe 1, particularly when the geometric shape of the steel pipe 1 has larger deviation or the axis is in a nonlinear state, the probe 6 is in point contact with the inner wall of the steel pipe 1, the steel pipe 1 can be driven by the elastic piece 5 to deflect the positioning block 41 along the direction of the acting force of the probe 6 on the inner wall contact point of the steel pipe 1 under the condition that the probe 6 is in contact with the steel pipe 1, the hard contact between the probe 6 and the steel pipe 1 which is fixed is avoided, the contact coincidence degree of the axis of the probe 6 and the axis of the steel pipe 1 to be detected is improved, the probe abrasion caused by the hard friction between the steel pipe 1 and the probe 6 is greatly reduced, the problem of extreme force abrasion of the steel pipe 1 on the probe 6 is solved, the service life of the probe 6 is greatly prolonged, the occurrence of the phenomenon that the probe 6 is stuck in the steel pipe 1 is avoided, the troubles of manufacturing the probe 6 and frequently replacing the probe 6 are reduced, and the inspection work efficiency is greatly improved.
Furthermore, due to the existence of the rubber spring, the clearance fit between the foot seat hole of the positioning block 41 and the stud bolt, and the existence of the interval between the foot seat of the positioning block 41 and the limit nut 85, the positioning block 41 can slightly deviate in the direction of any force up, down, left, right, front and back under the condition of stress, the friction is generated between the detection probe 6 and the steel pipe 1 under the condition that the probe 6 is in contact with the steel pipe 1, especially when the geometric shape of the steel pipe 1 has larger deviation or the axis is in a nonlinear state, the probe guide sphere 61 at the head of the probe 6 can be in linear contact with the inner wall of the steel pipe 1, so that the positioning block 41 of the steel pipe 1 slightly deviates in the direction of the force applied to the inner wall of the steel pipe 1 by the probe guide sphere 61, the contact between the probe 6 and the steel pipe 1 which is fixed is avoided, the coincidence degree of the axis of the probe guide rod 7 and the axis of the steel pipe 1 to be detected is improved, and the technical problem of eddy current detection of the defect of the inner wall of the steel pipe 1 is solved, the collision and abrasion of the steel pipe 1 to the probe 6 and the phenomenon that the probe 6 is stuck in the steel pipe 1 and cannot be detected are avoided, the service life of the probe 6 is prolonged to a great extent, the troubles of manufacturing the probe 6 and frequently replacing the probe 6 are reduced, and the inspection working efficiency is greatly improved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a steel pipe inner wall defect detecting device which characterized in that includes: the steel tube positioning device comprises an installation table, and a driving assembly and a steel tube positioning assembly which are arranged on the installation table;
the steel pipe positioning assembly comprises at least two positioning blocks, an elastic piece is clamped between each positioning block and the mounting table, and each positioning block is provided with a positioning hole for clamping a steel pipe;
the end part of the driving component is provided with a probe, one end of the probe is fixed on the driving component, and the other end of the probe points to the steel pipe and can extend into the steel pipe to detect the inner wall of the steel pipe.
2. The steel pipe inner wall defect detecting device of claim 1, wherein a plurality of first mounting grooves are formed on one side of each positioning block facing the mounting table, a second mounting groove corresponding to the first mounting groove is formed on the mounting table, one end of the elastic member is located in the first mounting groove, and the other end of the elastic member is located in the second mounting groove.
3. The steel pipe inner wall defect detecting device of claim 2, wherein a rod-shaped member is disposed in each elastic member, one end of the rod-shaped member is fixed to the mounting platform, the other end of the rod-shaped member passes through the positioning block and is limited by a limiting nut, a preset distance is left between the limiting nut and the positioning block, and pressure-equalizing steel rings are disposed at two ends of each elastic member.
4. The steel pipe inner wall defect detecting device of claim 1, wherein the positioning holes on each positioning block are through holes, all the positioning hole axes are collinear and have the same height, and the axis of the probe is collinear with all the positioning hole axes.
5. The apparatus according to claim 1, wherein the rigidity of the elastic member provided on the positioning block adjacent to the probe is smaller than the rigidity of the elastic member provided on the other positioning block.
6. The steel pipe inner wall defect detecting device of claim 1, wherein the probe is mounted on a probe guide rod, and one end of the probe guide rod far away from the probe is mounted on the driving assembly.
7. The steel pipe inner wall defect detection device of claim 4, further comprising a bearing seat and a linear bearing, wherein the bearing seat is fixed on the mounting table, the linear bearing is arranged in the bearing seat, and the probe guide rod is arranged in the linear bearing in a penetrating manner.
8. The steel pipe inner wall defect detection device of any one of claims 1 to 7, wherein the driving assembly comprises a driving piece and a dragging block, a housing of the driving piece is fixed on the mounting table, an output end of the driving piece is in driving connection with the dragging block, and the dragging block is fixedly connected with the probe guide rod;
the steel pipe fixing device is characterized in that at least two parallel guide rails are arranged on the mounting table, the length direction of the guide rails and the driving direction of the driving piece are parallel to the axis direction of the steel pipe, and one side, facing the mounting table, of the traction block is connected with the guide rails in a sliding mode.
9. The steel pipe inner wall defect detecting device of claim 8, further comprising a sensor, wherein the sensor is fixed on the mounting table and is arranged at an end position of the pulling block which is close to the steel pipe linear motion.
10. The steel pipe inner wall defect detecting device of claim 8, further comprising an eddy current detector, wherein the eddy current detector is arranged on the mounting table and electrically connected with the probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860140.6A CN113358741A (en) | 2021-07-28 | 2021-07-28 | Steel pipe inner wall defect detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860140.6A CN113358741A (en) | 2021-07-28 | 2021-07-28 | Steel pipe inner wall defect detection device |
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| Publication Number | Publication Date |
|---|---|
| CN113358741A true CN113358741A (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110860140.6A Pending CN113358741A (en) | 2021-07-28 | 2021-07-28 | Steel pipe inner wall defect detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778791A (en) * | 2022-04-20 | 2022-07-22 | 鑫鹏源(聊城)智能科技有限公司 | Inside flaw detection equipment of large-diameter seamless steel pipe |
-
2021
- 2021-07-28 CN CN202110860140.6A patent/CN113358741A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114778791A (en) * | 2022-04-20 | 2022-07-22 | 鑫鹏源(聊城)智能科技有限公司 | Inside flaw detection equipment of large-diameter seamless steel pipe |
| CN114778791B (en) * | 2022-04-20 | 2023-10-17 | 鑫鹏源(聊城)智能科技有限公司 | Inside fault detection equipment of seamless steel pipe of big pipe diameter |
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