CN217846146U - Longitudinal shrinkage test device for pipes - Google Patents
Longitudinal shrinkage test device for pipes Download PDFInfo
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- CN217846146U CN217846146U CN202221111841.6U CN202221111841U CN217846146U CN 217846146 U CN217846146 U CN 217846146U CN 202221111841 U CN202221111841 U CN 202221111841U CN 217846146 U CN217846146 U CN 217846146U
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- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims description 16
- 238000005259 measurement Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 15
- 230000003028 elevating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to a tubular product calorifics detects technical field, provides a tubular product vertical retraction rate test device, include: the device comprises a hot bath, a cover body, a lifting assembly, a clamping piece, a scriber and a length measurer; the hot bath is provided with an accommodating cavity for accommodating hot bath liquid, the accommodating cavity is provided with an opening, and the cover body is covered on the opening; the lifting assembly, the clamping piece, the scriber and the length measurer are arranged on one side, away from the opening, of the cover body, wherein the clamping piece is connected to one end, facing the accommodating cavity, of the lifting assembly and used for clamping a pipe; the scriber is used for scribing the pipe; the lifting mechanism is used for driving the pipe to penetrate through the cover body to be immersed into or separated from the hot bath liquid through the clamping piece; the length measurer is used for measuring the length of the pipe. The whole test process does not need to use manpower, the operation is convenient, the labor cost is reduced, the automation degree of the test is improved, and further the measurement precision and the measurement efficiency of the longitudinal shrinkage rate of the pipe are improved.
Description
Technical Field
The utility model relates to a tubular product calorifics detects technical field, especially relates to a vertical shrinkage test device of tubular product.
Background
Standard GB/T6671-2001 specifies the test of the longitudinal shrinkage of thermoplastic pipes by placing a sample of a given length in a heating medium at a given temperature for a given period of time, measuring the distance between the standards of the sample before and after heating and expressing the longitudinal shrinkage of the pipe as a percentage change from the original length.
In the prior art, the conventional method adopted for the longitudinal shrinkage test of the pipe is to perform marking manually, place the marked pipe in a heating medium for heating, take out the pipe after the heating time is up, manually measure the length of the pipe, calculate the shrinkage, perform marking, placing in or taking out the pipe from the heating medium, measure and the like manually, and on one hand, the operation procedures are more and the excessive labor cost is consumed; and on the other hand, the artificial error is increased, the measurement precision is poor, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vertical shrinkage test device of tubular product for solve among the prior art artifical measurement tubular product vertical shrinkage precision poor, the problem of inefficiency.
The utility model provides a vertical shrinkage test device of tubular product, include: the device comprises a hot bath, a cover body, a lifting assembly, a clamping piece, a scriber and a length measurer;
the hot bath is provided with an accommodating cavity, the accommodating cavity is used for accommodating hot bath liquid, the accommodating cavity is provided with an opening, and the cover body is covered on the opening;
the lifting assembly, the clamping piece, the scriber and the length measurer are all arranged on one side, away from the opening, of the cover body, wherein the clamping piece is connected to one end, facing the accommodating cavity, of the lifting assembly and used for clamping a pipe; the scriber is used for scribing the pipe; the lifting mechanism is used for driving the pipe to penetrate through the cover body to be immersed into or separated from the hot bath liquid through the clamping piece; the length measurer is used for measuring the length of the pipe.
According to the utility model provides a pair of vertical shrinkage test device of tubular product, the vertical shrinkage test device of tubular product still includes carries the piece, it locates to carry a detachable on the lid for carry tubular product.
According to the utility model provides a pair of vertical shrinkage test device of tubular product, vertical shrinkage test device of tubular product still includes control system, lifting unit with the control system communication is connected, control system can pass through lifting unit controls the high position of tubular product.
According to the utility model provides a pair of vertical shrinkage test device of tubular product, the scriber with the control system communication is connected, control system can control the position of ruling and the route of ruling of tubular product.
According to the utility model provides a pair of vertical shrinkage test device of tubular product, the length measurement ware with the control system communication is connected, control system can control the length measurement ware is right tubular product carries out length measurement.
According to the pipe longitudinal retraction rate testing device provided by the utility model, the pipe longitudinal retraction rate testing device also comprises a control panel, the control panel is in communication connection with the control system, and the control panel is arranged on the outer surface of the control system;
the control panel is used for inputting instructions, and the control system correspondingly controls any one of the lifting assembly, the scriber and the length measurer to work after receiving the instructions.
According to the utility model, the lifting component comprises a mounting seat and an electric lifting rod;
the mounting seat is connected to one side, facing the thermal bath, of the control system, and the electric lifting rod is connected to the mounting seat along the height direction of the thermal bath;
the clamping piece is connected to the driving end of the electric lifting rod.
According to the utility model provides a pair of vertical shrinkage test device of tubular product, the lid is equipped with the through-hole, the size of through-hole with the size looks adaptation of tubular product, tubular product can wear to locate the through-hole.
According to the utility model provides a pair of vertical shrinkage test device of tubular product, electric lift pole with the holder is a plurality of, and is a plurality of the electric lift pole all connect in the mount pad orientation one side of hot bath is a plurality of the holder is with a plurality of the electric lift pole one-to-one is connected.
According to the utility model provides a pair of vertical shrinkage test device of tubular product, the through-hole is a plurality of, and is a plurality of the through-hole is with a plurality of electric lift pole one-to-one sets up.
The utility model provides a vertical shrinkage test device of tubular product, including the hot bath, a cover body, lifting unit, the holder, scriber and length measurement ware, wherein, the holder can the centre gripping wait to detect the tubular product, fix it, utilize the scriber to rule it, after ruling is accomplished, drive the holder through elevating system, and then drive tubular product and descend to in the hot bath, make in its submergence and the hot bath, heat tubular product, wait to heat to set for long back, further utilize lifting unit to rise tubular product, make it break away from in the hot bath, measure the length after the tubular product heating through the length measurement ware, combine to calculate the vertical shrinkage that obtains tubular product at last. Compared with the prior art, the utility model provides a vertical shrinkage test device of tubular product's experimental overall process need not with the help of the manpower, and the simple operation has reduced the cost of labor, has improved the experimental degree of automation of the vertical shrinkage of tubular product, and then has improved the measurement accuracy and the measurement of efficiency of the vertical shrinkage of tubular product effectively.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a longitudinal pipe shrinkage test apparatus provided in an embodiment of the present invention;
FIG. 2 is a partial schematic view at A of FIG. 1;
FIG. 3 is a second schematic structural view of a longitudinal pipe shrinkage test apparatus according to an embodiment of the present invention;
reference numerals:
1: a thermal bath; 2: a cover body; 21: a through hole; 3: a lifting assembly; 31: a mounting seat; 32: an electric lifting rod; 4: a clamping member; 5: a carrier; 6: a scriber; 7: a control system; 8: a control panel; 9: a pipe.
Detailed Description
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of embodiments of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of embodiments of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
To make the objects, technical solutions and advantages of the present invention clearer, the drawings in the present invention will be combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The following describes the tube longitudinal retraction rate testing device according to an embodiment of the present invention with reference to fig. 1 to 3.
The embodiment of the utility model provides a vertical shrinkage test device of tubular product, include: a hot bath 1, a cover body 2, a lifting component 3, a clamping piece 4, a scriber 6 and a length measuring device.
The hot bath 1 is equipped with and holds the chamber, holds the chamber and is used for splendid attire hot bath liquid, holds the chamber and has uncovered, and uncovered is located to lid 2 lid.
The lifting component 3, the clamping piece 4, the scriber 6 and the length measurer are all arranged on one side of the cover body 2, which is far away from the opening, wherein the clamping piece 4 is connected to one end, facing the accommodating cavity, of the lifting component 3 and is used for clamping the pipe 9; the scriber 6 is used for scribing the pipe 9; the lifting mechanism is used for driving the pipe 9 to penetrate through the cover body 2 to be immersed into or separated from the hot bath liquid through the clamping piece 4; the length measurer is used for measuring the length of the pipe 9.
In particular, the thermal bath 1 serves to contain the thermal bath liquid and to provide a heating medium for heating the tube 9. The shape of the hot bath 1 may be a square structure as shown in fig. 1, a cylindrical structure or a polygonal structure, or a structure having another shape, and the structure is not particularly limited, and the tube 9 may be conveniently immersed therein. The tube 9 here can be a plastic tube.
In order to prevent the thermal bath liquid from being contaminated, as shown in fig. 1, a lid body 2 is provided to cover the opening of the thermal bath tank 1, i.e., the thermal bath liquid is put into the thermal bath tank 1, and the lid body 2 is covered to be heated.
In order to further guarantee the heating effect of the hot bath liquid, a heating device is arranged in the hot bath tank 1 to ensure that the pipe 9 is placed in the hot bath liquid and is continuously at the heating temperature required by the test.
The utility model provides a tubular product 9 has three kinds of states, one of them: as shown in fig. 1, before being heated, it is positioned between the thermal bath 1 and the scriber 6, and is subjected to a scribing pretreatment operation; the second step is as follows: as shown in fig. 3, the sheet is placed in a hot bath 1 by a lifting unit 3 and subjected to a heating treatment; and the third step: after the heating is completed, it is lifted up between the thermal bath 1 and the length measuring device by the lifting unit 3, and the length measurement is performed by the length measuring device located above it.
In order to ensure the stability of the pipe 9 during the lifting process, as shown in fig. 2, a clamping member 4 is disposed below the lifting assembly 3 for clamping the pipe 9, so that the pipe 9 is always kept in a stable state.
In addition, for the convenience of drawing lines, measuring to and improve the precision of drawing lines, measuring, the utility model discloses infrared scriber 6 and the infrared length measurement ware of all can preferring of scriber 6 and length measurement ware in the concrete example, it need not contact with tubular product 9, and the simple operation, can further improve vertical shrinkage test device measurement accuracy of tubular product and measurement of efficiency.
The embodiment of the utility model provides a vertical shrinkage test device of tubular product, including hot bath 1, the lid 2, lifting unit 3, holder 4, scriber 6 and length measurement ware, wherein, holder 4 can the centre gripping wait to detect tubular product 9, fix it, utilize scriber 6 to rule it, after ruling, drive holder 4 through elevating system, and then drive tubular product 9 and descend to hot bath 1, make in its submergence and the hot bath liquid, heat tubular product 9, wait to heat to set for long back, further utilize lifting unit 3 to rise tubular product 9, make it break away from in the hot bath liquid, measure the length after tubular product 9 heats through the length measurement ware, finally combine to calculate the vertical shrinkage that obtains tubular product 9. Compared with the prior art, the embodiment of the utility model provides a tubular product vertical retraction rate test device's experimental overall process need not with the help of the manpower, and the simple operation has reduced the cost of labor, has improved the experimental degree of automation of tubular product 9 vertical retraction rate, and then has improved the measurement accuracy and the measurement of efficiency of tubular product 9 vertical retraction rate effectively.
In an optional embodiment, the device for testing the longitudinal retraction rate of the tube further comprises a carrying member 5, and the carrying member 5 is detachably arranged on the cover body 2 and used for carrying the tube 9.
Specifically, as shown in fig. 1, a carrying member 5 is arranged between the lifting assembly 3 and the cover body, the carrying member 5 can be detached, namely, placed on the cover body when needed, and is removed from the cover body when not needed, and the function of the device is to place the pipe 9 on the carrying member 5 when the pipe 9 is scribed and measured, so that the stability of the pipe 9 can be ensured, the pipe is prevented from shaking to cause misoperation, and the scribing and measuring accuracy is further improved.
The shape of the carrier 5 is not particularly limited, and may be a table structure as shown in fig. 1, or a block structure, which can be taken out conveniently and has a certain supporting force.
In an optional embodiment, the tube longitudinal retraction rate testing device further comprises a control system 7, the lifting assembly 3 is in communication connection with the control system 7, and the control system 7 can control the height position of the tube 9 through the lifting assembly 3.
Specifically, in order to improve the automation degree of the pipe longitudinal retraction rate test device, as shown in fig. 1, a control system 7 is arranged at the top of the device, the control system 7 is in communication connection with the lifting assembly 3, and the lifting assembly 3 can be controlled to be raised or lowered according to actual needs so as to drive and adjust the height position of the pipe 9, namely, the pipe is immersed in the hot bath liquid or separated from the hot bath liquid.
In addition, the control system 7 can set the pipe longitudinal retraction rate test device to be automatically lifted after starting, and also can set the pipe longitudinal retraction rate test device to work at specific time, namely set the timing to reach the preset time, and automatically lift the pipe 9, so that the automation degree is further improved.
In an alternative embodiment, the scribe 6 is in communication with a control system 7, the control system 7 being capable of controlling the scribe position and scribe path of the tube 9.
Specifically, in order to further improve the automation degree of the test device for the longitudinal retraction rate of the pipe, as shown in fig. 1, the scriber 6 is arranged at the bottom of the control system 7, the control system 7 is in communication connection with the scriber 6, the pipe 9 can be automatically scribed according to actual needs, the scribing position and the scribing route of the pipe can be accurately controlled, and after scribing is completed, the pipe 9 is immediately placed into the hot bath 1 through the lifting assembly 3, so that manpower is saved, and the test efficiency is improved.
In an alternative embodiment, the length measuring device is in communication with the control system 7, and the control system 7 can control the length measuring device to measure the length of the tube 9.
Specifically, in order to further improve the degree of automation of the test device for the longitudinal retraction rate of the pipe, the length measuring device is installed at the bottom of the control system 7 in principle, the control system 7 is in communication connection with the length measuring device, the pipe 9 can be automatically measured according to actual needs, after heating is completed, the pipe 9 is lifted to a preset position through the lifting assembly 3, after the pipe 9 is stabilized, the heated length of the pipe is immediately measured through the length measuring device, so that labor is further saved, and the test efficiency is improved.
In an optional embodiment, the test device for the longitudinal retraction rate of the tube further comprises a control panel 8, the control panel 8 is in communication connection with the control system 7, and the control panel 8 is arranged on the outer surface of the control system 7.
The control panel 8 is used for inputting instructions, and the control system 7 correspondingly controls any one of the lifting component 3, the scriber 6 and the length measurer to work after receiving the instructions.
Specifically, as shown in fig. 3, a control panel 8 is arranged on the test device for the longitudinal retraction rate of the tube, the control panel 8 is in communication connection with a control system 7 to set parameters corresponding to the above functions, the control panel 8 is used for inputting instructions, and the control system 7 correspondingly adjusts and controls the lifting assembly 3, the scriber 6 or the length measurer to perform corresponding operations after receiving the instructions.
The control panel 8 is disposed on the outer surface of the control system 7 for easy operation, and the shape and the type of the key are not particularly limited.
In an alternative embodiment, the lifting assembly 3 includes a mounting block 31 and a motorized lifting rod 32.
The mounting base 31 is connected to the control system facing the hot bath 1, and the electric lift lever 32 is connected to the mounting base 31 in the height direction of the hot bath 1.
The holding member 4 is connected to the driving end of the electric lift lever 32.
Specifically, as shown in fig. 3, a mounting base 31 is mounted on the bottom of the control system 7, and a motorized lift pin 32 is vertically connected to the bottom of the mounting base 31.
The structure and the working principle of the electric lifting rod 32 are as follows: the electric lifting rod 32 is composed of a motor, a screw rod and a base, the screw rod with different diameters is sleeved with the base through a nut and freely rotates in the lifting rod body, a threaded motion pair is formed, a clamping piece 4 is arranged at the top of the screw rod, in the working process, a reduction gear pair is driven by the motor, the screw rod is driven to rotate synchronously and spirally, the spiral rotating motion of the transmission pair is converted into the linear motion of the rod body through the nut and the base, the clamping piece 4 is driven to move linearly up and down, the clamping piece 4 is driven to move up and down, and then the pipe 9 clamped by the clamping piece 4 can be driven to move up and down
In an alternative embodiment, the cover 2 is provided with a through hole 21, the size of the through hole 21 is matched with the size of the pipe 9, and the pipe 9 can penetrate through the through hole 21.
Specifically, as shown in fig. 1, a through hole 21 is provided on the cover 2, that is, a hole for allowing the tube 9 to move up and down is provided at a position corresponding to the tube 9, and the size and shape of the hole are determined according to the size and shape of the tube 9.
As shown in fig. 3, the lifting assembly 3 can drive the tube 9 to move up and down through the through hole 21.
The size of the through hole 21 should not be too small to avoid affecting the passing of the tube 9, and the size of the through hole 21 should not be too large to avoid heat loss and unnecessary energy waste.
In an alternative embodiment, the electric lifting rods 32 and the clamping members 4 are multiple, the electric lifting rods 32 are all connected to one side of the mounting seat 31 facing the hot bath 1, and the clamping members 4 are connected with the electric lifting rods 32 in a one-to-one correspondence manner.
Specifically, in order to further improve the accuracy of the measurement, in practice, it is generally necessary to perform a longitudinal shrinkage rate test on a plurality of identical tubes 9, and to calculate the average value thereof with a small error.
The embodiment of the utility model provides a vertical shrinkage test device of tubular product can set up a plurality of tubular products 9 simultaneously, carry out the synchronous test to a plurality of tubular products 9, promptly, correspond, set up a plurality of electric lift pole 32, all be provided with holder 4 at each electric lift pole 32, control a plurality of tubular products 9 through control system 7 and rule and dip the time of hot bath lotion, realize the synchronous operation of a plurality of tubular products 9, and then reduced environmental error, improved experimental precision and experimental efficiency.
The specific number of the pipes 9, the electric lifting rods 32 and the clamping pieces 4 is not limited, and the number of the pipes 9, the electric lifting rods 32 and the clamping pieces 4 can be three as shown in fig. 1, or other numbers, and the pipes 9 can be arranged side by side according to actual needs, and correspondingly, the three electric lifting rods 32 can also be arranged side by side in parallel.
In an alternative embodiment, there are a plurality of through holes 21, and the plurality of through holes 21 and the plurality of electric lift rods 32 are arranged in a one-to-one correspondence.
Specifically, in the case that there are a plurality of pipes 9 and electric lift pins 32, for convenience of operation, there are a plurality of through holes 21, and the plurality of through holes 21 correspond to the positions where the pipes 9 are placed, for example, as shown in fig. 1, three pipes 9 are arranged side by side, and correspondingly, three through holes 21 on the cover body below the pipes are also arranged side by side.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment, and those skilled in the art can understand and implement the solution without creative efforts.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a pipe longitudinal retraction rate test device which characterized in that includes: the device comprises a hot bath, a cover body, a lifting assembly, a clamping piece, a scriber and a length measurer;
the hot bath is provided with an accommodating cavity for accommodating hot bath liquid, the accommodating cavity is provided with an opening, and the cover body is covered on the opening;
the lifting assembly, the clamping piece, the scriber and the length measurer are all arranged on one side, away from the opening, of the cover body, wherein the clamping piece is connected to one end, facing the accommodating cavity, of the lifting assembly and used for clamping a pipe; the scriber is used for scribing the pipe; the lifting assembly is used for driving the pipe to penetrate through the cover body to be immersed into or separated from the hot bath liquid through the clamping piece; the length measurer is used for measuring the length of the pipe.
2. The longitudinal tube retraction rate test device according to claim 1, further comprising a carrying member, wherein the carrying member is detachably disposed on the cover body and used for carrying a tube.
3. The longitudinal pipe retraction rate testing apparatus as claimed in claim 1, further comprising a control system, wherein the lifting assembly is in communication with the control system, and the control system can control the height position of the pipe via the lifting assembly.
4. The tube longitudinal retraction rate testing apparatus according to claim 3, wherein the scriber is in communication with the control system, and the control system can control the scribing position and scribing path of the tube.
5. The longitudinal pipe retraction rate testing apparatus according to claim 4, wherein the length measuring device is in communication with the control system, and the control system can control the length measuring device to measure the length of the pipe.
6. The longitudinal pipe retraction rate test device according to claim 5, wherein the longitudinal pipe retraction rate test device further comprises a control panel, the control panel is in communication connection with the control system, and the control panel is arranged on the outer surface of the control system;
the control panel is used for inputting instructions, and the control system correspondingly controls any one of the lifting assembly, the scriber and the length measurer to work after receiving the instructions.
7. The longitudinal pipe retraction rate testing device according to claim 3, wherein the lifting assembly comprises a mounting seat and an electric lifting rod;
the mounting seat is connected to one side, facing the thermal bath, of the control system, and the electric lifting rod is connected to the mounting seat along the height direction of the thermal bath;
the clamping piece is connected to the driving end of the electric lifting rod.
8. The longitudinal pipe retraction rate testing device according to claim 7, wherein the cover body is provided with a through hole, the size of the through hole is matched with that of the pipe, and the pipe can penetrate through the through hole.
9. The device for testing the longitudinal retraction rate of the pipe according to claim 8, wherein the electric lifting rods and the clamping members are multiple, the electric lifting rods are all connected to one side of the mounting seat facing the hot bath, and the clamping members are connected with the electric lifting rods in a one-to-one correspondence manner.
10. The longitudinal pipe retraction rate testing device according to claim 9, wherein the number of the through holes is multiple, and the through holes and the electric lifting rods are arranged in a one-to-one correspondence manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221111841.6U CN217846146U (en) | 2022-05-09 | 2022-05-09 | Longitudinal shrinkage test device for pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221111841.6U CN217846146U (en) | 2022-05-09 | 2022-05-09 | Longitudinal shrinkage test device for pipes |
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| Publication Number | Publication Date |
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| CN217846146U true CN217846146U (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221111841.6U Active CN217846146U (en) | 2022-05-09 | 2022-05-09 | Longitudinal shrinkage test device for pipes |
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| CN (1) | CN217846146U (en) |
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- 2022-05-09 CN CN202221111841.6U patent/CN217846146U/en active Active
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Effective date of registration: 20240416 Address after: 071800 No. 016, South Side of Tourist Road, Dongcheng Park, Xiongzhou Town, Xiongxian County, Baoding City, Hebei Province Patentee after: Zhuxin (Hebei Xiong'an) Inspection and Testing Co.,Ltd. Country or region after: China Address before: 100041 No. 69 Jinding North Road, Beijing, Shijingshan District Patentee before: Beijing Building Materials Inspection and Research Institute Co.,Ltd. Country or region before: China |