CN201218712Y - Inspection bench for large coupling compact distance - Google Patents

Inspection bench for large coupling compact distance Download PDF

Info

Publication number
CN201218712Y
CN201218712Y CNU2008200594758U CN200820059475U CN201218712Y CN 201218712 Y CN201218712 Y CN 201218712Y CN U2008200594758 U CNU2008200594758 U CN U2008200594758U CN 200820059475 U CN200820059475 U CN 200820059475U CN 201218712 Y CN201218712 Y CN 201218712Y
Authority
CN
China
Prior art keywords
anvil
anvil block
rotary disk
box cupling
disk basement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2008200594758U
Other languages
Chinese (zh)
Inventor
耿伯成
陈臻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baoshan Iron and Steel Co Ltd
Baosteel Group Corp
Original Assignee
Baoshan Iron and Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baoshan Iron and Steel Co Ltd filed Critical Baoshan Iron and Steel Co Ltd
Priority to CNU2008200594758U priority Critical patent/CN201218712Y/en
Application granted granted Critical
Publication of CN201218712Y publication Critical patent/CN201218712Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Abstract

A large coupling stand-off inspection bed solves the problems that, operating density of inspecting the large coupling stand-off is large, job security is bad, inspection efficiency is low, accuracy of the inspection result is not high. The inspection bed is composed of a bench, a gauge dial part and a coupling anvil bed, wherein the gauge dial part and the coupling anvil bed are mounted on the bench; the gauge dial part includes a dial fixing the gauge, a transmission shaft and a transmission handwheel causing the dial to transmit, a dial seat for supporting the dial, a bench frame causing the dial seat to be slidingly fixed on the bench, a sliding mechanism between the bench frame and dial seat, a lead screw and a transmission handwheel; the coupling anvil bed includes a V-shaped anvil for placing the coupler, a transmission shaft in fixed connection with the V-shaped anvil, an anvil bed supporting the V-shaped anvil, a sliding mechanism causing the anvil bed to slide on the bench. The inspection bed can be suitable for coupling inspection with different diameters, causing inspectors of the large coupling stand-off to be more labor saving, safer and high-effective.

Description

The check-out console of the big tight distance of box cupling
Technical field
The utility model relates to the check accessory machinery of the tight distance of a kind of box cupling, refers in particular to the check-out console of the tight distance of a kind of bigbore tubing and casing box cupling screw thread.
Background technology
In the production of high-frequency welding (HFW) welded tube of large-scale steel pipe factory, bigbore tubing and casing product is one of them.
Bigbore oil casing threaded crudy is the Critical to quality of tubing and casing product.Closely apart from the comprehensive embodiment that is the quality of screw thread processing.In the API relevant criterion, stipulated and to have checked the tight distance of screw thread with special-purpose gauge.(up 20 "), it is accordingly closely apart from gauge also heavier (up 25kg) because the bore of heavy caliber tubing and casing box cupling is relatively large.Enforcement to the checked operation of big box cupling in the API standard does not have concrete guide, and the checker can only directly be 7 according to the mouth of pipe " mode of operation of following specification is carried out free-hand operation, that is, both hands are held the gauge handle, rely on manpower to screw merely, and it is very painstaking to operate.A normal adult man checks two box cuplings (just need have a rest 5 minutes after 20 ") by this way continuously; And under this fatigue state, the checker move continuously big gauge, big box cupling just exist accidentally drop, the potential safety hazard of slippage, this standardization to checked operation, accuracy can be had a greatly reduced quality.Along with output constantly increases, checker's free-hand operation, labour intensity is bigger, and work load is heavier, and operating efficiency is lower and accuracy affected that measure is heavier, and this is all unfavorable to rhythm of production, checker's occupational health and product quality.
At present, box cupling does not appear being used in the prior art as yet closely apart from the utility appliance of checking, free-hand operation is mainly still adopted in the check of the big tight distance of box cupling, therefore, the check of the present tight distance of big box cupling exists the above-mentioned operator's who mentions labour intensity big, operational security is poor, and checkability is low, the not high defective of the accuracy of assay.
The utility model content
The purpose of this utility model is in order to overcome the defective that above-mentioned prior art exists, provide a kind of big box cupling of tubing and casing that is used for closely apart from the check-out console of checking, this check-out console can reduce big box cupling closely apart from labour intensity and the load checked, it is lighter laborsaving that the reviewer is operated, and can improve operational security, improve operating efficiency, thereby guarantee the accuracy of assay.
The technical scheme that realizes the utility model purpose is:
The check-out console of the tight distance of a kind of big box cupling is characterized in that being made up of stand 1, gauge rotating disk part 100 and box cupling anvil block part 200, wherein:
Described gauge rotating disk part 100 is installed on the described stand 1 with box cupling anvil block part 200;
The structure of described gauge rotating disk part 100 is as follows: rotating disk 2 has the bolt slot 21 and the center pit 22 of several fixed size gauges 17; Fixedly connected with the terminal of a transmission shaft 3 in center pit 22 places of described rotating disk 2; Another of described transmission shaft 3 is terminal fixedlys connected with a transmission handwheel 7; Support the rotary disk basement 4 of described rotating disk 2 and transmission shaft 3; Described transmission shaft 3 is with driving sleeve 6, and driving sleeve 6 is fixedlyed connected with described rotary disk basement 4; Be fixed in stand support 1 on the described stand 1 ', at stand support 1 ' on the side panel of described rotary disk basement 4, be fixedly connected with two vertical parallel rotary disk basement slide rails 5, described rotary disk basement 4 stationkeeping corresponding on the side of rotary disk basement slide rail 5 with described rotary disk basement slide rail 5 be provided with several rotary disk basement slide blocks 5 ', rotary disk basement 4 is by this rotary disk basement slide block 5 ' be slidingly connected with rotary disk basement slide rail 5; One screw mandrel 8, the end of screw mandrel 8 is connected a screw mandrel web member 81 respectively with an end of rotary disk basement 4, screw mandrel web member 81 is that inner core is the parts of cylindrical hole, the end of screw mandrel 8 places in this cylindrical hole, fixedly connected with an end of rotary disk basement 4 in one side of screw mandrel web member 81, another of screw mandrel 8 is terminal fixedlys connected with a control hand wheel 10; Screw mandrel 8 is with screw mandrel axle sleeve 9 and is threaded, and screw mandrel axle sleeve 9 is fixedlyed connected with stand 1;
The structure of described box cupling anvil block part 200 is as follows: the V-type anvil 11 of putting box cupling 16; Put the V-type anvil 11 of box cupling 16; The rotating shaft 12 of fixedlying connected with described V-type anvil 11; Support the anvil block 13 of described V-type anvil 11, be equipped with fixedly round sleeve 19 on anvil block 13, described rotating shaft 12 places this fixedly in the round sleeve 19, and rotating shaft 12 is fixedly rotated at the center of round sleeve 19 around this on anvil block 13; Place the register pin 14 of between described V-type anvil 11 and the anvil block 13 V-type anvil 11 being located; Be fixed in two parallel anvil block slide rails 15 on the stand 1, the bottom of described anvil block 13 and two parallel sliding tracks 15 corresponding stationkeeping be provided with several anvil block slide blocks 15 ', anvil block 13 is by this anvil block slide block 15 ' be slidingly connected with anvil block slide rail 15.
The beneficial effects of the utility model:
Check-out console of the present utility model uses this device to have following advantage for the reviewer provides a kind of big box cupling closely apart from the servicing unit of check:
1, reduce reviewer's labour intensity, it is lighter laborsaving that the reviewer is operated;
2, improve checkability, thereby guaranteed the accuracy of assay;
3, eliminated the existing accident potential of free-hand carrying heavy goods, guarantee reviewer's job safety;
4, can satisfy the tight of 7 "~20 " all specification box cuplings and use apart from check.
The utility model is applied in the check of the tight distance of heavy caliber box cupling, because it is light laborsaving to have an operation, and job safety, characteristics that checkability is high, so application prospect is more wide.
For further specifying above-mentioned purpose of the present utility model, design feature and effect, the utility model is elaborated below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of the check-out console of the tight distance of big box cupling of the present utility model;
Fig. 2 is the structural representation of the rotating disk in the utility model;
Fig. 3 is the structural representation of the box cupling anvil block part in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the check-out console of the tight distance of big box cupling of the present utility model is elaborated.
The check-out console of the tight distance of big box cupling of the present utility model can realize that big box cupling closely moves apart from each step of check, finishes the check of the tight distance of big box cupling.
The structure of the check-out console of the tight distance of big box cupling of the present utility model is referring to Fig. 1,3, and Fig. 1 is the structural representation of the check-out console of the tight distance of big box cupling of the present utility model; Fig. 3 is the structural representation of the box cupling anvil block part in the utility model.
The check-out console of the tight distance of big box cupling of the present utility model mainly is made up of stand 1, gauge rotating disk part 100 and box cupling anvil block part 200.
Gauge rotating disk part 100 and box cupling anvil block part 200 are installed on the stand 1.
The structure of gauge rotating disk part 100 wherein is as follows:
Rotating disk 2, have several bolt slots 21 (referring to the structural representation of the rotating disk among Fig. 2, present embodiment is 4 grooves) be used for for bolt 21 ' fixed size gauge 17, the size of rotating disk 2 is decided with the size of different size gauge 17, the size of gauge 17 is big, the size of the rotating disk 2 that uses is also big, and the size of gauge 17 is decided by the size of the box cupling 16 that is verified, and the utility model is suitable for the box cupling of 7 "~20 " all specifications; The centre of rotating disk 2 also has center pit 22;
Center pit 22 places of rotating disk 2 adopt the key connection to fixedly connected with the terminal of a transmission shaft 3 with facing stop 31;
The terminal employing of another of transmission shaft 3 key connects fixedlys connected with a transmission handwheel 7 with facing stop 32, and transmission shaft 3 rotates and drive rotating disk 2 rotations during rotation transmission handwheel 7;
Support the rotary disk basement 4 of rotating disk 2 and transmission shaft 3;
The outside of transmission shaft 3 is with driving sleeve 6, and driving sleeve 6 is fixedlyed connected with above-mentioned rotary disk basement 4, and transmission shaft 3 passes through the lining axial restraint, circumferentially rotates in driving sleeve 6;
Stand support 1 ', be fixed on the stand 1, stand support 1 ' on the side panel of rotary disk basement 4, be fixedly connected with two vertical parallel rotary disk basement slide rails 5, above-mentioned rotary disk basement 4 stationkeeping corresponding on the side of rotary disk basement slide rail 5 with rotary disk basement slide rail 5 be provided with several rotary disk basement slide blocks 5 ', generally, corresponding every rotary disk basement slide rail 5, be provided with at least on the rotary disk basement 42 rotary disk basement slide blocks 5 ', rotary disk basement 4 is by this rotary disk basement slide block 5 ' be slidingly connected with rotary disk basement slide rail 5;
Screw mandrel 8, the end of screw mandrel 8 is connected a screw mandrel web member 81 respectively with an end of rotary disk basement 4, screw mandrel web member 81 is that inner core is the parts of cylindrical hole, the end of screw mandrel 8 places in the cylindrical hole can do circumferential rotation, fixedly connected with an end of rotary disk basement 4 in one side of screw mandrel web member 81, another of above-mentioned screw mandrel 8 is terminal fixedlys connected with control hand wheel 10;
Screw mandrel 8 outsides are with screw mandrel axle sleeve 9, screw mandrel axle sleeve 9 is fixedlyed connected with stand 1, above-mentioned screw mandrel 8 is threaded with screw mandrel axle sleeve 9, screw mandrel 8 is done the screw thread turn during rotation control hand wheel 10 on screw mandrel axle sleeve 9, screw mandrel 8 drives rotary disk basement 4 by screw mandrel web member 81 and slides up and down on rotary disk basement slide rail 5, reach up-down adjustment, to satisfy the examination requirements of 7 "~20 " all specification box cuplings 16 to gauge 17 centers.
The structure of box cupling anvil block part 200 wherein is as follows:
Put the V-type anvil 11 of box cupling 16, the mounted on surface polyurethane nylon cushion 18 of V-type anvil 11, box cupling 16 skids when preventing gauge 17 rotations;
The rotating shaft 12 of fixedlying connected with V-type anvil 11;
Support the anvil block 13 of V-type anvil 11, on anvil block 13, be equipped with fixedly round sleeve 19, above-mentioned rotating shaft 12 places this fixedly in the round sleeve 19, rotating shaft 12 can fixedly be rotated at the center of round sleeve 19 around this on anvil block 13, reaching rotating shaft 12 is axial restraints with anvil block 13, the relation that rotating shaft 12 can circumferentially be rotated on anvil block 13 again, rotating shaft 12 rotates V-type anvil 11 when rotating thereupon;
Place the register pin 14 of between V-type anvil 11 and the anvil block 13 V-type anvil 11 being located;
Be fixed in two parallel anvil block slide rails 15 on the stand 1, the bottom of anvil block 13 and two parallel sliding tracks 15 corresponding stationkeeping be provided with several anvil block slide blocks 15 ', anvil block 13 is by this anvil block slide block 15 ' be slidingly connected with anvil block slide rail 15, generally, corresponding every anvil block slide rail 15, be provided with at least on the anvil block 13 2 anvil block slide blocks 15 '.
Above-mentioned V-type anvil 11 is seated on the anvil block 13, this anvil block 13 is formed sliding pair with stand 1 by linear slide rail (anvil block slide rail 15), when box cupling 16 and gauge 17 stubborn connecing, and the screw thread-like transmission, drive box cupling 16 and do translation, realize the screw-in and the back-out of gauge 17 along anvil block slide rail 15.V-type anvil 11 and anvil block 13 can realize that to be rotationally connected box cupling 16 rotates with 360 degree on V-type anvil 11 in addition, by register pin 14 V-type anvil 11 and anvil block 13 are realized that 180 spend the location.
Operation steps to the utility model device is summarized as follows in conjunction with the accompanying drawings below:
At first, external thread gauge 17 handlings are placed on the V-type anvil 11, regulate the control hand wheel 10 among Fig. 1, the center of rotating disk 2 is transferred to central horizontal with gauge 17, V-type anvil block 13 integral body are shifted near rotating disk 2, gauge 17 is fixed by bolts on the rotating disk 2; Box cupling 16 handlings to be tested are placed on the V-type seat 11, and fine setting control hand wheel 10 makes gauge 17 centers align with box cupling 16 central horizontal.Checker one people pins box cupling 16, one people's turn is rotated handwheel 7 gauge 17 is screwed in box cupling 16, box cupling 16 anvil blocks are also progressively screwed by gauge 17 near gauge 17 along anvil block slide rail 15 in this process, can go out the tight apart from value of box cupling 16 from the range observation that gauge 17 screws in box cuplings 16 after screwing.After measuring end, handwheel 7 is rotated in reverse rotation can screw out gauge 17, then, unclamp register pin 14, V-type anvil 11 is rotated 180 degree, fixed locating stud 14 again, repeat previous action then, measure the tight distance of box cupling 16 other end screw threads, at last the box cupling 16 that has inspected is hung out.
The rotating disk 2 of said fixing gauge 17 is to rotate by the rotation realization of transmission shaft 3, and rotation axis 3 is to link to each other with transmission handwheel 7, like this, with less power rotation transmission handwheel 7, just can drive gauge 17 rotations.
At cantilever suspension bracket of the other configuration of check-out console, can realize the carrying of box cupling 16, gauge 17 easily.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the purpose of this utility model, and be not with opposing qualification of the present utility model, as long as in essential scope of the present utility model, all will drop in the scope of claim of the present utility model variation, the modification of the above embodiment.

Claims (7)

1, the check-out console of the tight distance of a kind of big box cupling is characterized in that: form by stand (1), gauge rotating disk part (100) and box cupling anvil block part (200), wherein:
Described gauge rotating disk part (100) is installed on the described stand (1) with box cupling anvil block part (200);
The structure of described gauge rotating disk part (100) is as follows:
Rotating disk (2) has the bolt slot (21) and the center pit (22) of several fixed size gauges (17);
The center pit (22) of described rotating disk (2) is located to fixedly connected with the terminal of a transmission shaft (3);
Another of described transmission shaft (3) is terminal fixedlys connected with a transmission handwheel (7);
Support the rotary disk basement (4) of described rotating disk (2) and transmission shaft (3);
Described transmission shaft (3) is with driving sleeve (6), and driving sleeve (6) is fixedlyed connected with described rotary disk basement (4);
Be fixed in the stand support (1 ') on the described stand (1), on the side panel of described rotary disk basement (4), be fixedly connected with two vertical parallel rotary disk basement slide rails (5) at stand support (1 '), described rotary disk basement (4) stationkeeping corresponding with described rotary disk basement slide rail (5) on the side of rotary disk basement slide rail (5) is provided with several rotary disk basement slide blocks (5 '), and rotary disk basement (4) is slidingly connected by this rotary disk basement slide block (5 ') and rotary disk basement slide rail (5);
One screw mandrel (8), the end of screw mandrel (8) is connected a screw mandrel web member (81) respectively with an end of rotary disk basement (4), screw mandrel web member (81) is that inner core is the parts of cylindrical hole, the end of screw mandrel (8) places in this cylindrical hole, fixedly connected with an end of rotary disk basement (4) in one side of screw mandrel web member (81), another of screw mandrel (8) is terminal fixedlys connected with a control hand wheel (10);
Screw mandrel (8) is with screw mandrel axle sleeve (9) and is threaded, and screw mandrel axle sleeve (9) is fixedlyed connected with stand (1);
The structure of described box cupling anvil block part (200) is as follows:
Put the V-type anvil (11) of box cupling (16);
The rotating shaft (12) of fixedlying connected with described V-type anvil (11);
Support the anvil block (13) of described V-type anvil (11), be equipped with fixedly round sleeve (19) on anvil block (13), described rotating shaft (12) places this fixedly in the round sleeve (19), and rotating shaft (12) is gone up around the fixedly center rotation of round sleeve (19) at anvil block (13);
Place the register pin (14) of between described V-type anvil (11) and the anvil block (13) V-type anvil (11) being located;
Be fixed in two parallel anvil block slide rails (15) on the stand (1), the stationkeeping corresponding with two parallel sliding tracks (15) is provided with several anvil block slide blocks (15 ') in the bottom of described anvil block (13), and anvil block (13) is slidingly connected by this anvil block slide block (15 ') and anvil block slide rail (15).
2, the check-out console of the tight distance of big box cupling as claimed in claim 1 is characterized in that:
The size of described rotating disk (2) is decided with the size of different size gauge (17).
3, the check-out console of the tight distance of big box cupling as claimed in claim 1 is characterized in that:
It is to adopt key to be connected and facing stop (31) that the center pit (22) of described rotating disk (2) is located with the fixedly connected of transmission shaft (3) end.
4, the check-out console of the tight distance of big box cupling as claimed in claim 1 is characterized in that:
Another of described transmission shaft (3) is terminal to be to adopt key to be connected and facing stop (32) with the fixedly connected of transmission handwheel (7).
5, the check-out console of the tight distance of big box cupling as claimed in claim 1 is characterized in that:
On the described rotary disk basement (4), 2 rotary disk basement slide blocks (5 ') are set at least in the position of every described rotary disk basement slide rail of correspondence (5).
6, the check-out console of the tight distance of big box cupling as claimed in claim 1 is characterized in that:
The mounted on surface polyurethane nylon cushion (18) of described V-type anvil (11).
7, the check-out console of the tight distance of big box cupling as claimed in claim 1 is characterized in that:
On the described anvil block (13), 2 anvil block slide blocks (15 ') are set at least in the position of every described anvil block slide rail of correspondence (15).
CNU2008200594758U 2008-06-06 2008-06-06 Inspection bench for large coupling compact distance Expired - Fee Related CN201218712Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200594758U CN201218712Y (en) 2008-06-06 2008-06-06 Inspection bench for large coupling compact distance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200594758U CN201218712Y (en) 2008-06-06 2008-06-06 Inspection bench for large coupling compact distance

Publications (1)

Publication Number Publication Date
CN201218712Y true CN201218712Y (en) 2009-04-08

Family

ID=40541547

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200594758U Expired - Fee Related CN201218712Y (en) 2008-06-06 2008-06-06 Inspection bench for large coupling compact distance

Country Status (1)

Country Link
CN (1) CN201218712Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103743370A (en) * 2013-12-18 2014-04-23 河南东方龙机械制造有限公司 Automatic oil casing coupling standoff measuring device
CN105771181A (en) * 2016-03-15 2016-07-20 李赵和 Two-rotary-wheel control mechanism
CN107525450A (en) * 2016-06-20 2017-12-29 上海瓦姆石油天然气管业有限公司 A kind of servicing unit for the measurement of pipe joint compact distance
CN109894852A (en) * 2019-03-29 2019-06-18 武汉科技大学 A kind of hydraulic cylinder Earrings assembly device
CN113475289A (en) * 2021-06-17 2021-10-08 山东省果树研究所 Kiwi fruit tree structure and pruning method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103743370A (en) * 2013-12-18 2014-04-23 河南东方龙机械制造有限公司 Automatic oil casing coupling standoff measuring device
CN105771181A (en) * 2016-03-15 2016-07-20 李赵和 Two-rotary-wheel control mechanism
CN107525450A (en) * 2016-06-20 2017-12-29 上海瓦姆石油天然气管业有限公司 A kind of servicing unit for the measurement of pipe joint compact distance
CN109894852A (en) * 2019-03-29 2019-06-18 武汉科技大学 A kind of hydraulic cylinder Earrings assembly device
CN113475289A (en) * 2021-06-17 2021-10-08 山东省果树研究所 Kiwi fruit tree structure and pruning method thereof
CN113475289B (en) * 2021-06-17 2023-08-08 山东省果树研究所 Kiwi tree structure and pruning method thereof

Similar Documents

Publication Publication Date Title
CN107436263B (en) Spring steel wire torsion fatigue test method and device thereof
CN201218712Y (en) Inspection bench for large coupling compact distance
CN104990713A (en) Automobile brake assembly fatigue test stand
KR101478122B1 (en) Wheel hub measurement tester for vehicles
CN204705479U (en) The adjustment of a kind of speed reduction unit main cone bearing clearance and moment inspecting platform
CN105466683A (en) High-speed train gearbox no-load running-in test bench
CN219065121U (en) Special equipment pressure pipeline quality detection device
CN110296830A (en) A kind of running-in test device of track train stem gear case
CN105259193A (en) Multi-scale pipeline weld seam detecting device
CN103837419B (en) Railway elastic bar fatigue tester
CN210136136U (en) Pipeline full-size tension-compression fatigue test device
CN205352690U (en) Unloaded running -in test bench of high speed train gear box
CN205940960U (en) Automobile semi -axle and transmission shaft twist reverse fatigue test device
CN104390737A (en) Screwdriver slot torque test method of fastener and test device for implementing the method
CN107101816B (en) Semi-floating semi-axis composite loading fatigue test stand
CN203011893U (en) Large automatic ultrasonic defectoscope with small-height vertical rolling turntable
CN210689693U (en) Detection device for pipe
CN204406213U (en) A kind of wheel shaft phased array supersonic automatic flaw detection workpiece centralising device
CN201259413Y (en) Auxiliary device for steel pipe detection
CN209027716U (en) A kind of torque tester for aligning component
CN220339906U (en) Double-hole method detection device for internal stress of hot-rolled H-shaped steel
CN111474059A (en) Pressure pipeline detection system
CN218297981U (en) Pin shaft detection device for crawler-type caterpillar track joint
CN216816511U (en) Pipe fitting X-ray detection tool
CN219434823U (en) Inspection device for inner wall of cold-rolled steel pipe

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090408

Termination date: 20130606