CN223091738U - Hardness detection device for seamless steel tube - Google Patents
Hardness detection device for seamless steel tube Download PDFInfo
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- CN223091738U CN223091738U CN202421879256.XU CN202421879256U CN223091738U CN 223091738 U CN223091738 U CN 223091738U CN 202421879256 U CN202421879256 U CN 202421879256U CN 223091738 U CN223091738 U CN 223091738U
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Abstract
本实用新型公开了一种无缝钢管硬度检测装置，包括装置主体，所述装置主体上设置有上下位置对应的压头和高度调节件，所述高度调节件靠近压头的一侧安装有位置调节机构，所述位置调节机构顶部安装有测试台，所述测试台顶部设置有外圈限位件和内圈限位件，所述无缝钢管置于外圈限位件和内圈限位件之间，所述装置主体顶部开设有安装槽，所述安装槽内滑动安装有安装座，所述内圈限位件可拆卸安装于安装座上，本实用新型通过设置的外圈限位件、内圈限位件和放料推动组件，可自动限位固定待检测的无缝钢管样品，避免无缝钢管样品在检测时位置偏移，提高检测精度，无需人工再次固定，限位固定操作便捷，提高检测效率。
The utility model discloses a seamless steel pipe hardness testing device, including a device main body, wherein a pressure head and a height adjustment member corresponding to the upper and lower positions are arranged on the device main body, a position adjustment mechanism is installed on the side of the height adjustment member close to the pressure head, a test bench is installed on the top of the position adjustment mechanism, an outer ring limiter and an inner ring limiter are arranged on the top of the test bench, the seamless steel pipe is placed between the outer ring limiter and the inner ring limiter, a mounting groove is opened on the top of the device main body, a mounting seat is slidably installed in the mounting groove, and the inner ring limiter can be detachably installed on the mounting seat. The utility model can automatically limit and fix the seamless steel pipe sample to be tested by the outer ring limiter, the inner ring limiter and the material discharge pushing assembly, so as to avoid the position deviation of the seamless steel pipe sample during testing, improve the testing accuracy, and do not need to be fixed manually again. The limiting and fixing operation is convenient, thereby improving the testing efficiency.
Description
Technical Field
The utility model relates to the technical field of seamless steel pipe detection, in particular to a device for detecting hardness of a seamless steel pipe.
Background
The seamless steel pipe is formed by perforating a whole round steel, and is called a seamless steel pipe, the surface of the seamless steel pipe is free of welding seams, according to the production method, the seamless steel pipe can be divided into a hot-rolled seamless steel pipe, a cold-drawn seamless steel pipe, an extruded seamless steel pipe, a jacking pipe and the like, and the hardness of the seamless steel pipe before delivery is required to be detected in quality, and whether the hardness of the seamless steel pipe meets the standard or not is detected, so that the seamless steel pipe can be used by a hardness detection device.
According to the search, chinese patent publication No. CN219284926U discloses a Rockwell hardness tester, which comprises a machine body and a test bench, wherein the test bench is arranged on the machine body, at least two groups of clamping mechanisms for clamping and fixing products are arranged on the test bench, the clamping mechanisms comprise a supporting rod, an abutting block and a driving piece, the supporting rod is fixed on the test bench through a fixing assembly, the abutting block is arranged on the supporting rod in a sliding manner along a direction close to or far away from the adjacent abutting block, the abutting block is used for abutting against a product, the driving piece is used for driving the abutting block to slide, when the hardness of a test sample is detected, the test sample is required to be placed on the test bench, then the test sample is clamped and fixed through manual operation of the clamping mechanisms, the operation is complex, the time is consumed, and the detection efficiency is reduced.
Disclosure of utility model
Aiming at the defects in the prior art, the utility model aims to provide a seamless steel tube hardness detection device for solving the defects in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The utility model provides a seamless steel pipe hardness detection device, includes the device main part, be provided with pressure head and the altitude mixture control spare that the upper and lower position corresponds in the device main part, altitude mixture control spare is close to one side of pressure head and installs position adjustment mechanism, the testboard is installed at position adjustment mechanism top, the testboard top is provided with outer lane locating part and inner circle locating part, seamless steel pipe is arranged in between outer lane locating part and the inner circle locating part, the mounting groove has been seted up at device main part top, slidable mounting has the mount pad in the mounting groove, inner circle locating part demountable installation is on the mount pad, outer lane locating part demountable installation is on the testboard, the testboard inside is provided with the blowing pushing component, the blowing pushing component is used for pushing the inner circle locating part to move near seamless steel pipe and carries out spacingly when seamless steel pipe is placed at the testboard top.
Preferably, the blowing pushing component comprises a lifting column, a fixed plate, a first linkage pushing block and a second linkage pushing block, wherein a sliding groove is vertically formed between an outer ring limiting part and an inner ring limiting part on the test bench, the sliding groove is formed at a position close to the outer ring limiting part, the lifting column is slidably mounted in the sliding groove, a matching groove is formed at the bottom of the mounting groove, the second linkage pushing block is fixedly connected to the bottom of the mounting seat, a through groove is formed between the matching groove and the sliding groove, one side of the lifting column is transversely fixedly connected with the fixed plate, one end of the fixed plate, far away from the lifting column, is fixedly connected with the first linkage pushing block, the first linkage pushing block is arranged at the top of the second linkage pushing block, and a sliding fit inclined plane is arranged between the first linkage pushing block and the second linkage pushing block.
Preferably, balls are embedded in the contact surface of the first linkage pushing block and the second linkage pushing block in a rolling way, and the second linkage pushing block is provided with a through groove for the first linkage pushing block to partially pass through.
Preferably, a first spring is fixedly connected between the two ends of the bottom of the lifting column and the bottom end inside the sliding groove, and in the unstressed state of the first spring, the lifting column part protrudes out of the upper surface of the test bench.
Preferably, a second spring is fixedly connected between one side of the mounting seat, which is close to the outer ring limiting piece, and the inner wall of the mounting groove.
Preferably, the outer ring limiting part comprises a positioning clamping seat and an outer ring limiting plate fixedly connected to the top of the positioning clamping seat, a first positioning groove is formed in the top of the test bench, the positioning clamping seat can be clamped into the first positioning groove, and the thickness of the positioning clamping seat is the same as the depth of the first positioning groove.
Preferably, the inner ring limiting piece comprises a connecting plate, an inner ring limiting plate fixedly connected to the top of one end of the connecting plate and a positioning clamping block fixedly connected to the bottom of the other end of the connecting plate, a second positioning groove is formed in the top of the mounting seat, and the positioning clamping block can be clamped into the second positioning groove.
Preferably, the position adjusting mechanism comprises a frame body fixedly connected to the top of the height adjusting piece, a screw rod is rotatably connected in the frame body, one end of the screw rod extends to the outside of the frame body and is fixedly connected with a knob, the bottom of the test board is fixedly connected with a movable seat, and the movable seat is arranged in the frame body and is in threaded connection with the screw rod.
Preferably, guide rods are symmetrically arranged on two sides of the screw rod, two ends of each guide rod are fixedly connected to the inner wall of the frame body, and the movable seat is in sliding connection with the guide rods.
Preferably, a telescopic dust cover is arranged between the two sides of the test bench and the top of the frame body.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, the seamless steel tube sample to be detected is placed at the top of the test bench from top to bottom through the outer ring limiting piece, and is attached to the outer ring limiting piece as much as possible, the seamless steel tube sample drives the discharging pushing piece to act through self gravity, the mounting seat is pushed to slide in the direction of the outer ring limiting piece so as to automatically adjust the position of the inner ring limiting piece, the seamless steel tube sample to be detected is limited and fixed through the outer ring limiting piece and the inner ring limiting piece, the position deviation of the seamless steel tube sample during detection is avoided, the detection precision is improved, manual re-fixing is not needed, the limiting and fixing operation is convenient, and the detection efficiency is improved.
(2) According to the utility model, the inner ring limiting piece is detachably arranged on the mounting seat, the outer ring limiting piece is detachably arranged on the test bench, so that the inner ring limiting piece and the outer ring limiting piece can be conveniently replaced, and the seamless steel tube sample with different specifications and sizes can be matched for limiting and fixing use, and the applicability is higher.
Drawings
FIG. 1 is a schematic diagram of the overall three-dimensional structure of a seamless steel tube hardness detection device;
FIG. 2 is a schematic perspective view of a position adjustment mechanism and a test stand;
FIG. 3 is a schematic cross-sectional view of a test stand;
FIG. 4 is a schematic diagram of a discharge pushing assembly;
FIG. 5 is a schematic diagram of a split structure of the outer ring limiter and the inner ring limiter with the test bench;
fig. 6 is a schematic view of the internal structure of the position adjusting mechanism.
1, A device main body; 11, a pressing head, 12, a height adjusting part, 2, a position adjusting mechanism, 21, a frame body, 22, a movable seat, 23, a screw rod, 24, a knob, 25, a guide rod, 3, a test bench, 31, a mounting groove, 32, a matching groove, 33, a sliding groove, 34, a through groove, 35, a first positioning groove, 4, an outer ring limiting part, 41, a positioning clamping seat, 42, an outer ring limiting plate, 5, a mounting seat, 51, a second positioning groove, 52, a second spring, 6, an inner ring limiting part, 61, a connecting plate, 62, an inner ring limiting plate, 63, a positioning clamping block, 7, a discharging pushing assembly, 71, a lifting column, 72, a fixed plate, 73, a first linkage pushing block, 74, a second linkage pushing block, 741, a ball, 75 and a first spring.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Examples:
Referring to fig. 1-6, the present embodiment provides a seamless steel tube hardness detection device, including a device main body 1, a pressing head 11 and a height adjusting member 12 corresponding to the upper and lower positions are provided on the device main body 1, a position adjusting mechanism 2 is installed on one side of the height adjusting member 12 near the pressing head 11, a test bench 3 is installed on the top of the position adjusting mechanism 2, the height adjusting member 12 is used for adjusting the longitudinal height of the test bench 3, which is not described in detail herein, an outer ring limiting member 4 and an inner ring limiting member 6 are provided on the top of the test bench 3, a seamless steel tube is placed between the outer ring limiting member 4 and the inner ring limiting member 6, a mounting groove 31 is provided on the top of the device main body 1, a mounting seat 5 is slidably installed in the mounting groove 31, the inner ring limiting member 6 is detachably installed on the mounting seat 5, the outer ring limiting member 4 is detachably installed on the test bench 3, the inside blowing pushing component 7 that is provided with of testboard 3, blowing pushing component 7 is used for when seamless steel pipe places at testboard 3 top, promote that inner circle locating part 6 is moved and is close to seamless steel pipe and carry out spacingly, when using, place the seamless steel pipe sample that will wait to detect on testboard 3, and be arranged between outer lane locating part 4 and inner circle locating part 6, after the seamless steel pipe sample that waits to detect is placed in place, drive blowing pushing component 7 and act, thereby promote mount pad 5 and slide to outer lane locating part 4 direction in mounting groove 31, with the position of adjusting inner circle locating part 6, it is spacing fixed with the seamless steel pipe sample that will wait to detect through outer lane locating part 4 and inner circle locating part 6, avoid seamless steel pipe sample position deviation when detecting, improve the detection precision, and convenient operation, the practicality is high.
As an implementation manner of this embodiment, as shown in fig. 2, 3 and 4, the discharging pushing assembly 7 includes a lifting column 71, a fixing plate 72, a first linkage pushing block 73 and a second linkage pushing block 74, a sliding groove 33 is vertically formed between the outer ring limiting member 4 and the inner ring limiting member 6 on the test bench 3, the sliding groove 33 is arranged near the outer ring limiting member 4, the lifting column 71 is slidably mounted in the sliding groove 33, a matching groove 32 is formed at the bottom of the mounting groove 31, the second linkage pushing block 74 is fixedly connected to the bottom of the mounting seat 5, a through groove 34 is formed between the matching groove 32 and the sliding groove 33, one side of the lifting column 71 is transversely and fixedly connected with the fixing plate 72, one end of the fixing plate 72 away from the lifting column 71 is fixedly connected with the first linkage pushing block 73, the first linkage pushing block 73 is arranged at the top of the second linkage pushing block 74, and a sliding fit inclined plane is formed between the first linkage pushing block 73 and the second linkage pushing block, a first spring 75 is fixedly connected between the two ends of the bottom of the lifting column 71 and the bottom inside the sliding groove 33, the lifting column 71 partially protrudes out of the upper surface of the test bench 3 in the state that the first spring 75 is not stressed, when a seamless steel tube sample to be detected is placed on the test bench 3, the seamless steel tube sample is placed from top to bottom and is attached to the outer ring limiting piece 4 as much as possible, so that the lifting column 71 contacts with the seamless steel tube sample, the lifting column 71 is pressed into the sliding groove 33 through the self gravity of the seamless steel tube sample, at the moment, the first linkage pushing piece 73 is driven to synchronously move downwards through the fixing plate 72, the second linkage pushing piece 74 is pushed to transversely move towards the outer ring limiting piece 4 under the sliding cooperation of the first linkage pushing piece 73 and the second linkage pushing piece 74, thereby the automatic position adjustment of the mounting seat 5 and the inner ring limiting piece 6 is driven through the second linkage pushing piece 74, the inner ring limiting piece 6 is pressed close to the inner ring of the seamless steel tube sample, so that the seamless steel tube sample is limited and fixed, manual fixation is not needed, limiting and fixing are convenient, the detection efficiency is improved, and after the seamless steel tube sample is taken down, the lifting column 71 is automatically reset through the action of the first spring 75, so that the subsequent detection and use are facilitated.
In this embodiment, as shown in fig. 4, balls 741 are embedded in the contact surface of the first linkage pushing block 73 and the second linkage pushing block 74 in a rolling manner, the friction force of the contact surface of the first linkage pushing block 73 and the second linkage pushing block 74 is reduced by the arranged balls 741, the pushing operation of the second linkage pushing block 74 is facilitated, the second linkage pushing block 74 is provided with a through groove for the first linkage pushing block 73 to partially pass through, and the second linkage pushing block 74 can be designed to have a longer stroke length by the arranged through groove.
In this embodiment, as shown in fig. 5, a second spring 52 is fixedly connected between the side, close to the outer ring limiting member 4, of the mounting seat 5 and the inner wall of the mounting groove 31, and after the lifting column 71 is reset, the second spring 52 acts to eliminate the thrust of the first linkage pushing block 73 to the second linkage pushing block 74, and the second spring 52 is used for automatically resetting the mounting seat 5, so that the subsequent detection and use are facilitated.
In this embodiment, as shown in fig. 5, the outer ring limiter 4 includes a positioning clamping seat 41 and an outer ring limiter 42 fixedly connected to the top of the positioning clamping seat 41, a first positioning groove 35 is provided at the top of the test bench 3, the positioning clamping seat 41 can be clamped into the first positioning groove 35, the thickness of the positioning clamping seat 41 is the same as the depth of the first positioning groove 35, the outer ring limiter 42 is designed to be matched with the outer ring of the seamless steel tube sample, and the outer ring limiter 42 can be replaced according to different specifications and sizes of the seamless steel tube sample by clamping the positioning clamping seat 41 into the first positioning groove 35;
The inner ring limiting piece 6 comprises a connecting plate 61, an inner ring limiting plate 62 fixedly connected to the top of one end of the connecting plate 61 and a positioning clamping block 63 fixedly connected to the bottom of the other end of the connecting plate 61, wherein the top of the mounting seat 5 is provided with a second positioning groove 51, the positioning clamping block 63 can be clamped into the second positioning groove 51, the inner ring limiting plate 62 is designed to be matched with the inner ring of a seamless steel tube sample, the positioning clamping block 63 is clamped into the second positioning groove 51, and the inner ring limiting plate 62 can be replaced according to different specification and sizes of the seamless steel tube sample, so that the seamless steel tube sample fixing device is suitable for fixing seamless steel tube samples with various specification and sizes and high in applicability.
In this embodiment, when testing seamless steel tube samples with different inner diameters and outer diameters, the outer ring limiter 4 and the inner ring limiter 6 need to be replaced, so that the outer ring limiter 42 and the inner ring limiter 62 are matched with the seamless steel tube samples in shape, and it should be noted that the inner ring limiter 6 is selected to ensure that the initial distance between the outer wall of the inner ring limiter 62 and the inner wall of the seamless steel tube sample is the same as the moving stroke length of the mounting seat 5.
In this embodiment, as shown in fig. 6, the position adjusting mechanism 2 includes a frame 21 fixedly connected to the top of the height adjusting member 12, a screw rod 23 is rotationally connected to the frame 21, one end of the screw rod 23 extends to the outside of the frame 21 and is fixedly connected with a knob 24, a moving seat 22 is fixedly connected to the bottom of the test stand 3, the moving seat 22 is disposed inside the frame 21 and is in threaded connection with the screw rod 23, guide rods 25 are symmetrically disposed on two sides of the screw rod 23, the guide rods 25 are parallel to the screw rod 23, two ends of the guide rods 25 are fixedly connected to the inner wall of the frame 21, the moving seat 22 is slidably connected with the guide rods 25, the screw rod 23 can be driven to rotate by rotating the knob 24, so that the position of the moving seat 22 is adjusted, the limiting guide function is achieved on the moving seat 22 by setting the guide rods 25, the stability of the movement of the moving seat 22 is improved, the position of a seamless steel tube sample on the test stand 3 is adjusted, the detection position of the seamless steel tube sample is convenient to adjust, and the hardness detection effect is improved.
In this embodiment, as shown in fig. 6, a telescopic dust cover is installed between two sides of the test stand 3 and the top of the frame 21, and the telescopic dust cover is an organ type telescopic dust cover, so that the protection effect on the transmission part in the frame 21 is improved.
The utility model has the working principle that when the seamless steel tube sample to be detected is placed at the top of the test bench 3 from top to bottom and is attached to the outer ring limiting piece 4 as much as possible, so that the lifting column 71 is contacted with the seamless steel tube sample, the lifting column 71 is pressed into the sliding groove 33 by self gravity of the seamless steel tube sample, at the moment, the first linkage push block 73 is driven by the fixing plate 72 to synchronously move downwards, the second linkage push block 74 is pushed to transversely move towards the outer ring limiting piece 4 under the sliding fit action of the first linkage push block 73 and the second linkage push block 74, the mounting seat 5 and the inner ring limiting piece 6 are driven by the second linkage push block 74 to automatically adjust the positions of the inner ring limiting piece 6, the inner ring of the seamless steel tube sample is attached to the inner ring of the seamless steel tube sample through the outer ring limiting piece 4 and the inner ring limiting piece 6, after the seamless steel tube sample is removed, the lifting column 71 is automatically reset by the action of the first steel tube spring 75, the mounting seat 5 is automatically reset by the second spring 52, the seamless steel tube sample is conveniently and subsequently detected, when the seamless steel tube sample is detected, the adaptive steel tube sample with different sizes is replaced, the inner ring limiting piece 4 and the seamless steel tube sample is detected, the detection accuracy is improved, the seamless steel tube sample detection is not required to be manually, and the detection accuracy is improved.
The foregoing embodiments are preferred embodiments of the present utility model, and in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.
Claims (10)
1. The utility model provides a seamless steel pipe hardness detection device, includes device main part (1), be provided with pressure head (11) and altitude mixture control spare (12) that the upper and lower position corresponds on device main part (1), wherein altitude mixture control spare (12) are close to one side of pressure head (11) and install position adjustment mechanism (2), testboard (3) are installed at position adjustment mechanism (2) top, testboard (3) top is provided with outer lane locating part (4) and inner circle locating part (6), seamless steel pipe is arranged in between outer lane locating part (4) and inner circle locating part (6), mounting groove (31) have been seted up at device main part (1) top, install mount pad (5) in the interior circle locating part (6) demountable installation on mount pad (5), outer lane locating part (4) demountable installation is on testboard (3), testboard (3) inside is provided with blowing pushing component (7), blowing pushing component (7) are used for carrying out the spacing when seamless steel pipe (3) are placed at testboard top and are close to spacing (6).
2. The seamless steel pipe hardness detection device according to claim 1, wherein the discharging pushing assembly (7) comprises a lifting column (71), a fixing plate (72), a first linkage pushing block (73) and a second linkage pushing block (74), a sliding groove (33) is vertically formed between an outer ring limiting part (4) and an inner ring limiting part (6) on the test table (3), the sliding groove (33) is formed at a position close to the outer ring limiting part (4), the lifting column (71) is slidably mounted in the sliding groove (33), a matching groove (32) is formed in the bottom of the mounting groove (31), the second linkage pushing block (74) is fixedly connected to the bottom of the mounting seat (5), a through groove (34) is formed between the matching groove (32) and the sliding groove (33), one side of the lifting column (71) is transversely fixedly connected with the fixing plate (72), one end, far away from the lifting column (71), of the fixing plate (72) is fixedly connected with the first linkage pushing block (73), and the first linkage pushing block (73) is arranged at the top of the second linkage pushing block (73), and the second linkage pushing block (74) is matched with the top of the first linkage pushing block.
3. The device for detecting the hardness of the seamless steel tube according to claim 2, wherein balls (741) are embedded in the contact surface of the first linkage pushing block (73) and the second linkage pushing block (74) in a rolling mode, and a through groove for the first linkage pushing block (73) to partially penetrate is formed in the second linkage pushing block (74).
4. The device for detecting the hardness of the seamless steel tube according to claim 3, wherein a first spring (75) is fixedly connected between two ends of the bottom of the lifting column (71) and the bottom inside the sliding groove (33), and the lifting column (71) partially protrudes out of the upper surface of the test table (3) in an unstressed state of the first spring (75).
5. The seamless steel tube hardness testing device according to claim 1, wherein a second spring (52) is fixedly connected between one side of the mounting seat (5) close to the outer ring limiting piece (4) and the inner wall of the mounting groove (31).
6. The device for detecting the hardness of the seamless steel tube according to claim 1, wherein the outer ring limiting piece (4) comprises a positioning clamping seat (41) and an outer ring limiting plate (42) fixedly connected to the top of the positioning clamping seat (41), a first positioning groove (35) is formed in the top of the test table (3), the positioning clamping seat (41) can be clamped into the first positioning groove (35), and the thickness of the positioning clamping seat (41) is the same as the depth of the first positioning groove (35).
7. The device for detecting the hardness of the seamless steel tube according to claim 1, wherein the inner ring limiting piece (6) comprises a connecting plate (61), an inner ring limiting plate (62) fixedly connected to the top of one end of the connecting plate (61) and a positioning clamping block (63) fixedly connected to the bottom of the other end of the connecting plate (61), the top of the mounting seat (5) is provided with a second positioning groove (51), and the positioning clamping block (63) can be clamped into the second positioning groove (51).
8. The seamless steel pipe hardness testing device according to claim 1, wherein the position adjusting mechanism (2) comprises a frame body (21) fixedly connected to the top of the height adjusting piece (12), a screw rod (23) is rotatably connected to the frame body (21), one end of the screw rod (23) extends to the outside of the frame body (21) and is fixedly connected with a knob (24), a movable seat (22) is fixedly connected to the bottom of the test bench (3), and the movable seat (22) is arranged inside the frame body (21) and is in threaded connection with the screw rod (23).
9. The device for detecting the hardness of the seamless steel tube according to claim 8, wherein guide rods (25) are symmetrically arranged on two sides of the screw rod (23), two ends of each guide rod (25) are fixedly connected to the inner wall of the frame body (21), and the movable seat (22) is in sliding connection with the guide rods (25).
10. The device for detecting the hardness of the seamless steel tube according to claim 8, wherein a telescopic dust cover is arranged between two sides of the test bench (3) and the top of the frame body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421879256.XU CN223091738U (en) | 2024-08-02 | 2024-08-02 | Hardness detection device for seamless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421879256.XU CN223091738U (en) | 2024-08-02 | 2024-08-02 | Hardness detection device for seamless steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223091738U true CN223091738U (en) | 2025-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421879256.XU Active CN223091738U (en) | 2024-08-02 | 2024-08-02 | Hardness detection device for seamless steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223091738U (en) |
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2024
- 2024-08-02 CN CN202421879256.XU patent/CN223091738U/en active Active
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