CN106872060B - Equipment convenient for repairing slag line on continuous temperature measuring pipe and repairing method - Google Patents
Equipment convenient for repairing slag line on continuous temperature measuring pipe and repairing method Download PDFInfo
- Publication number
- CN106872060B CN106872060B CN201710052655.7A CN201710052655A CN106872060B CN 106872060 B CN106872060 B CN 106872060B CN 201710052655 A CN201710052655 A CN 201710052655A CN 106872060 B CN106872060 B CN 106872060B
- Authority
- CN
- China
- Prior art keywords
- temperature measuring
- continuous temperature
- measuring tube
- storage
- slag line
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The device comprises a storage barrel for placing the continuous temperature measuring pipe and a storage rack, wherein the storage rack is provided with a plurality of storage holes, the bottom of the storage barrel is provided with an annular block which can be erected above the storage holes, the upper side of the continuous temperature measuring pipe penetrates through the annular block and is erected on the annular block, and the lower side of the continuous temperature measuring pipe penetrates through the storage holes and is suspended below the storage holes. Through setting up storage barrel, storage rack for after the slag line on it is corroded seriously in the continuous temperature tube use, can take out this continuous temperature tube and place and restore the slag line on storage rack, thereby recycle, show the manufacturing cost who has reduced continuous temperature tube.
Description
Technical Field
The invention relates to the field of continuous casting tundishes, in particular to equipment and a repairing method for conveniently repairing a slag line on a continuous temperature measuring pipe.
Background
The continuous temperature measuring tube is used as middle package temperature measuring monitoring equipment and has an important effect on ensuring the smooth production. In the use process of the continuous temperature measuring tube, the slag line on the continuous temperature measuring tube is easy to be seriously corroded, thereby influencing the accuracy of temperature measurement.
In the prior art, after a slag line on the continuous temperature measuring pipe is seriously corroded, the slag line cannot be used continuously, so that a large amount of materials are wasted, and the production cost is invisibly increased.
Disclosure of Invention
The invention provides equipment and a repairing method for conveniently repairing a slag line on a continuous temperature measuring tube, and mainly aims to overcome the defect that the existing continuous temperature measuring tube cannot be used continuously after the slag line on the continuous temperature measuring tube is seriously corroded.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an equipment convenient to restore slag line on continuous temperature tube, is including being used for placing storage bucket and a storage rack of continuous temperature tube, seted up a plurality of deposit holes on the storage rack, the bottom of depositing the bucket has an annular piece, and this annular piece can erect deposit the hole top, the upside of continuous temperature tube passes the annular piece is erect on this annular piece, the downside passes deposit hole and unsettled below this deposit hole that is located.
Furthermore, a gasket is erected on the upper side of the annular block, and the upper side of the continuous temperature measuring tube sequentially penetrates through the gasket and the annular block and abuts against the inner ring of the gasket.
Furthermore, a temperature measuring probe is arranged at the top of the continuous temperature measuring tube, a movable probe protecting barrel is sleeved on the outer side of the temperature measuring probe, and the outer side wall of the probe protecting barrel is connected with the storage barrel through a chain.
Furthermore, the top of the storage barrel is provided with a hanging ring, and the side wall of the storage barrel is also provided with a channel for taking and placing the continuous temperature measuring tube.
Furthermore, the storage hole is composed of an arc-shaped part and a trapezoid part, and two end points of the arc-shaped part are respectively connected with two end points of the upper bottom edge of the trapezoid part.
A repairing method convenient for repairing a slag line on a continuous temperature measuring tube comprises the following steps:
1) Operating a crane to hoist the storage barrel, placing a corresponding gasket on the upper side of the annular block at the bottom of the storage barrel, and then enabling the bottom end of a new continuous temperature measuring tube to penetrate through the annular block and enabling the upper side of the new continuous temperature measuring tube to be abutted against the inner ring of the gasket;
2) Operating the crane to move, moving the storage barrel on the crane to the position above the storage rack, and enabling the bottom end of the new continuous temperature measuring tube to be over against the storage hole in the storage rack;
3) Operating the crane to move, so that the annular block on the storage barrel is erected on the storage hole, and the lower side of the new continuous temperature measuring tube penetrates through the storage hole and is suspended below the storage hole;
4) Coating chromium corundum fire clay with the thickness of 0-10 mm on the slag line layer which is 40-100 mm away from the bottom end of the storage barrel on the new continuous temperature measuring tube;
5) Putting the new continuous temperature measuring tube into use, taking out the old continuous temperature measuring tube when the erosion depth of the slag line on the new continuous temperature measuring tube is less than or equal to 20mm, and standing until the surface temperature of the old continuous temperature measuring tube is less than or equal to 80 ℃; then coating the chromium corundum fire clay on the slag line layer and enabling the coated chromium corundum fire clay to protrude out of the old continuous temperature measuring pipe by the thickness of 0-10 mm;
6) After the smearing is finished, standing the old continuous temperature measuring tube for more than 4 hours, and then putting into use again;
7) The old continuous temperature measuring tube is used for 2 to 4 times by repeating the steps of 5 to 6.
Further, the chromium corundum fire clay is prepared from 70-75% of chromium corundum and water according to the weight ratio: 25 to 30 percent, and is placed for 5 to 10 minutes after being evenly mixed.
Further, the chrome corundum is prepared from the following components in parts by weight: 5-10% of chromium, 80-90% of Al2O3 and 5-10% of SiO 2.
Further, in step 5, the time for taking out the old continuous temperature measuring tube to stand is as follows: standing for 4-5 hours in summer, standing for 2-3 hours in winter, and standing for 3-4 hours in spring and autumn.
Furthermore, in the step 5, the continuous temperature measuring pipe is taken out only when the erosion depth of the slag line on the continuous temperature measuring pipe in use is 10-20 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. the continuous temperature measuring pipe is simple in structure and high in practicability, and the storage barrel and the storage rack are arranged, so that the continuous temperature measuring pipe can be taken out and placed on the storage rack to repair a slag line after the slag line on the continuous temperature measuring pipe is seriously corroded in the using process of the continuous temperature measuring pipe, the continuous temperature measuring pipe is recycled, and the production cost of the continuous temperature measuring pipe is remarkably reduced.
2. According to the invention, the gasket is arranged, so that the continuous temperature measuring tube in the storage barrel can be placed more stably and reliably, and the storage barrel can be prevented from being in direct contact with the continuous temperature measuring tube to cause abrasion of the continuous temperature measuring tube.
3. In the invention, the probe protection barrel is arranged, so that the temperature measuring probe on the continuous temperature measuring tube can be covered by the probe protection barrel when the continuous temperature measuring tube is not used, and dust is prevented from entering the continuous temperature measuring tube.
4. In the invention, the storage hole is composed of the arc-shaped part and the trapezoid part, the trapezoid part is used for facilitating a user to operate the continuous temperature measuring tube to penetrate through the storage hole, and the arc-shaped part is used for enabling the continuous temperature measuring tube to lean against the arc-shaped part after the storage barrel is in place, thereby further improving the stability of the continuous temperature measuring tube when being placed.
5. After the method is adopted, the service life of the continuous temperature measuring tube is prolonged from 1 time of 30 furnaces to 3 times of 80 furnaces, and the service life of the continuous temperature measuring tube is greatly prolonged.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a schematic structural view of the storage bucket according to the present invention.
Fig. 3 is a top view of the storage rack of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
Reference is made to fig. 1, 2 and 3. The utility model provides an equipment convenient to restore slag line on continuous temperature tube, is including being used for placing continuous temperature tube 1 deposit bucket 2 and a storage rack 3, a plurality of deposit holes 31 have been seted up on the storage rack 3, the bottom of depositing bucket 2 has an annular piece 21, and this annular piece 21 can erect deposit hole 31 top, the upside of continuous temperature tube 1 passes annular piece 21 erects on this annular piece 21, the downside passes deposit hole 31 and unsettled below this deposit hole 31. Through setting up storage bucket 2, storage rack 3 for after the slag line on it is corroded seriously in the use of continuous temperature tube 1, can take out this continuous temperature tube 1 and place and repair the slag line on storage rack 3, thereby recycle, show the manufacturing cost who has reduced continuous temperature tube.
Reference is made to fig. 1, 2 and 3. A gasket 4 is erected on the upper side of the annular block 21, and the upper side of the continuous temperature measuring tube 1 sequentially penetrates through the gasket 4 and the annular block 21 and abuts against the inner ring of the gasket 4. Through setting up gasket 4, can be so that deposit 2 in the bucket continuous temperature tube 1 when placing more reliable and more stable, also can avoid depositing 2 and continuous temperature tube 1 direct contact of bucket simultaneously, cause the wearing and tearing of continuous temperature tube 1.
Reference is made to fig. 1, 2 and 3. The top of the continuous temperature measuring tube 1 is provided with a temperature measuring probe 11, the outer side sleeve of the temperature measuring probe 11 is provided with a movable probe protecting barrel 5, and the outer side wall of the probe protecting barrel 5 is connected with the storage barrel 2 through a chain 51. Wherein the probe protection barrel 5 has a size of Φ 20mm × 50mm, and is made of a steel pipe; the length of the chain 51 is 15 to 20cm. By arranging the probe protection barrel 5, when the continuous temperature measuring tube 1 is not used, the temperature measuring probe 11 on the continuous temperature measuring tube can be covered by the probe protection barrel 5, so that dust is prevented from entering the continuous temperature measuring tube 1. The top of the storage barrel 2 is provided with a hanging ring 22, and the side wall of the storage barrel is also provided with a channel 23 for taking and placing the continuous temperature measuring tube.
Refer to fig. 1, 2 and 3. In the present invention, the number of the storage holes 31 is 4, and the storage holes are arranged in the storage rack 3 in a circular array. The storage hole 31 is composed of an arc portion 311 and a trapezoid portion 312, and two end points of the arc portion 311 are respectively connected with two end points of the upper bottom edge of the trapezoid portion 312. The storage hole 31 is formed by an arc-shaped part 311 and a trapezoid part 312, the trapezoid part 312 is used for facilitating a user to operate the continuous temperature measuring tube 1 to penetrate through the storage hole 31, the arc-shaped part 311 is used for enabling the continuous temperature measuring tube 1 to lean against the arc-shaped part 311 after the storage barrel 2 is in place, and stability of the continuous temperature measuring tube 1 during placement is further improved.
Refer to fig. 1, 2 and 3. A repairing method convenient for repairing a slag line on a continuous temperature measuring pipe comprises the following steps:
step one
The storage barrel 2 is lifted by operating a crane, the corresponding gasket 4 is placed on the upper side of the annular block 21 at the bottom of the storage barrel 2, and then the bottom end of a new continuous temperature measuring tube 1 penetrates through the annular block 21, and the upper side of the new continuous temperature measuring tube 1 is abutted against the inner ring of the gasket 4.
Step two
And operating the crane to move, moving the storage barrel 2 on the crane to the upper part of the storage rack 3, and enabling the bottom end of the new continuous temperature measuring tube 1 to be opposite to the storage hole 31 on the storage rack 3.
Step three
The crane is operated to make the annular block 21 on the storage barrel 2 erected on the storage hole 31, and the lower side of the new continuous temperature measuring tube 1 passes through the storage hole 31 to be suspended below the storage hole 31.
Step four
And coating chromium corundum fire clay 6 with the thickness of 0-10 mm on the slag line layer which is 40-100 mm away from the bottom end of the storage barrel 2 on the new continuous temperature measuring tube 1.
Step five
Putting the new continuous temperature measuring tube 1 into use, taking out the old continuous temperature measuring tube when the erosion depth of the slag line on the new continuous temperature measuring tube is less than or equal to 20mm (wherein the old continuous temperature measuring tube is best taken out when the erosion depth is 10-20 mm, and the continuous temperature measuring tube can be utilized most fully), and standing until the surface temperature of the old continuous temperature measuring tube is less than or equal to 80 ℃; and then coating the chromium corundum fireclay 6 on the slag line layer and enabling the coated chromium corundum fireclay to protrude out of the old continuous temperature measuring tube by the thickness of 0-10 mm.
Wherein, the time for taking out the old continuous temperature measuring tube to stand is as follows: standing for 4-5 hours in summer, standing for 2-3 hours in winter, and standing for 3-4 hours in spring and autumn.
Step six
After the smearing, the old continuous temperature measuring tube is kept still for more than 4 hours and then put into use again.
Step seven
The old continuous temperature measuring tube is used for 2 to 4 times by repeating the five to six steps.
Reference is made to fig. 1, 2 and 3. The chromium corundum fire clay is prepared from 70-75% of chromium corundum and water in a weight ratio: 25 to 30 percent, and is placed for 5 to 10 minutes after being evenly mixed. The chrome corundum consists of the following components in parts by weight: 5-10% of chromium, 80-90% of Al2O3 and 5-10% of SiO 2. The proportion can achieve the best repairing effect
After the method is adopted, the service life of the continuous temperature measuring tube is prolonged from 1 time of 30 furnaces to 3 times of 80 furnaces, and the service life of the continuous temperature measuring tube is greatly prolonged.
Through the equipment and the repairing method, the continuous temperature measuring pipe can be used for multiple times in the three-steel two-steel continuous casting workshop at present, the average service life is prolonged from 22.93 furnaces/pipe to 56.3 furnaces/pipe, and the usage amount of the continuous temperature measuring pipe is reduced from 97 furnaces/month before the attack to 44.25 pipes in 1-4 months. After the price of each continuous temperature measuring pipe is 762 yuan, the cost of each ton of steel of the continuous temperature measuring pipe is reduced to 0.101 yuan per ton of steel from 0.248 yuan per ton in 2015, the production cost of each ton of steel is reduced by 0.147 yuan, the production cost of each ton of steel is reduced by 196531.06 yuan in 1-4 months, 0.48 ton of chromium corundum fire clay is consumed, each ton of chromium corundum fire clay is 9800 yuan, the cost is 4704 yuan, the benefit is 191827.06 yuan in 1-4 months, and the expected annual benefit is 575481.18 yuan.
The technology is successfully popularized and used in a three-steel two-steel continuous casting workshop, the secondary utilization times are averagely 44.25 times per month, the technology is mature, and the technology is stably applied in the production process. The technology can be popularized and used in steel mills all over the country, and the production cost of the continuous casting temperature measuring tube is obviously reduced.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (5)
1. The utility model provides an equipment convenient to restore slag line on continuous temperature tube which characterized in that: the device comprises a storage barrel and a storage rack, wherein the storage barrel is used for placing the continuous temperature measuring tube, the storage rack is provided with a plurality of storage holes, the bottom of the storage barrel is provided with an annular block, the annular block can be erected above the storage holes, the upper side of the continuous temperature measuring tube penetrates through the annular block and is erected on the annular block, and the lower side of the continuous temperature measuring tube penetrates through the storage holes and is suspended below the storage holes; a gasket is erected on the upper side of the annular block, and the upper side of the continuous temperature measuring tube sequentially penetrates through the gasket and the annular block and abuts against the inner ring of the gasket; the top of the continuous temperature measuring tube is provided with a temperature measuring probe, the outer side of the temperature measuring probe is sleeved with a movable probe protecting barrel, and the outer side wall of the probe protecting barrel is connected with the storage barrel through a chain; the top of the storage barrel is provided with a hanging ring, and the side wall of the storage barrel is also provided with a channel for taking and placing the continuous temperature measuring tube; the storage hole consists of an arc-shaped part and a trapezoid part, and two end points of the arc-shaped part are respectively connected with two end points of the upper bottom edge of the trapezoid part; the use method of the device comprises the following steps:
1) Operating a crane to hoist the storage barrel, placing a corresponding gasket on the upper side of the annular block at the bottom of the storage barrel, and then enabling the bottom end of a continuous temperature measuring tube to penetrate through the annular block, and enabling the upper side of the continuous temperature measuring tube to be abutted against the inner ring of the gasket;
2) Operating the crane to move, moving the storage barrel on the crane to the position above the storage rack, and enabling the bottom end of the continuous temperature measuring tube to be opposite to the storage hole in the storage rack;
3) Operating the crane to move, so that the annular block on the storage barrel is erected on the storage hole, and the lower side of the continuous temperature measuring tube penetrates through the storage hole and is suspended below the storage hole;
4) Coating chromium corundum fire clay with the thickness of 0-10 mm on a slag line layer which is 40-100 mm away from the bottom end of the storage barrel on the continuous temperature measuring pipe;
5) Putting the continuous temperature measuring tube into use, taking out the continuous temperature measuring tube when the erosion depth of the slag line on the continuous temperature measuring tube is less than or equal to 20mm, and standing until the surface temperature of the continuous temperature measuring tube is less than or equal to 80 ℃; then coating the chromium corundum fire clay on the slag line layer and enabling the coated chromium corundum fire clay to protrude out of the continuous temperature measuring tube by 0-10 mm;
6) After the smearing is finished, standing the continuous temperature measuring tube for more than 4 hours, and then putting the continuous temperature measuring tube into use again;
7) And (3) repeating the steps 5) to 6) and using the continuous temperature measuring tube for 2 to 4 times.
2. The apparatus for facilitating repair of a slag line on a continuous temperature tube according to claim 1, wherein: the chromium corundum fire clay is prepared from 70-75% of chromium corundum and water in a weight ratio: 25 to 30 percent, and is placed for 5 to 10 minutes after being evenly mixed.
3. The apparatus for facilitating repair of a slag line on a continuous temperature tube according to claim 2, wherein: the chromium corundum consists of the following components in parts by weight: 5-10% of chromium, 80-90% of Al2O3 and 5-10% of SiO 2.
4. The apparatus for facilitating repair of a slag line on a continuous temperature tube according to claim 1, wherein: in the step 5), the time for taking out the continuous temperature measuring tube to stand is as follows: standing for 4-5 hours in summer, standing for 2-3 hours in winter, and standing for 3-4 hours in spring and autumn.
5. The apparatus for facilitating repair of a slag line on a continuous temperature tube according to claim 1, wherein: in the step 5), the continuous temperature measuring tube is taken out when the erosion depth of the slag line on the continuous temperature measuring tube in use is 10-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052655.7A CN106872060B (en) | 2017-01-24 | 2017-01-24 | Equipment convenient for repairing slag line on continuous temperature measuring pipe and repairing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710052655.7A CN106872060B (en) | 2017-01-24 | 2017-01-24 | Equipment convenient for repairing slag line on continuous temperature measuring pipe and repairing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106872060A CN106872060A (en) | 2017-06-20 |
| CN106872060B true CN106872060B (en) | 2023-04-07 |
Family
ID=59158240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710052655.7A Active CN106872060B (en) | 2017-01-24 | 2017-01-24 | Equipment convenient for repairing slag line on continuous temperature measuring pipe and repairing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106872060B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3934107A (en) * | 1973-05-02 | 1976-01-20 | Egon Evertz | Process for repairing slag ladles |
| US4494737A (en) * | 1981-10-08 | 1985-01-22 | Pullman Berry Company | Lance for repairing the lining of steelmaking vessels |
| JPH0685351U (en) * | 1993-05-26 | 1994-12-06 | 住友金属工業株式会社 | Snorkel for ladle refining |
| WO2011114001A1 (en) * | 2010-03-18 | 2011-09-22 | Borealis Ag | Method of repairing a pipe coating |
| CN203519179U (en) * | 2013-08-28 | 2014-04-02 | 沈阳泰合冶金测控技术有限公司 | Laterally-opened temperature-measuring tube tray locked by ball wedge |
| CN205403979U (en) * | 2016-01-08 | 2016-07-27 | 新疆八一钢铁股份有限公司 | Continuous temperature measurement tray that can fix a position |
| CN206420575U (en) * | 2017-01-24 | 2017-08-18 | 福建三钢闽光股份有限公司 | A kind of equipment for being easily repaired slag line on continuous temperature measuring tube |
-
2017
- 2017-01-24 CN CN201710052655.7A patent/CN106872060B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3934107A (en) * | 1973-05-02 | 1976-01-20 | Egon Evertz | Process for repairing slag ladles |
| US4494737A (en) * | 1981-10-08 | 1985-01-22 | Pullman Berry Company | Lance for repairing the lining of steelmaking vessels |
| JPH0685351U (en) * | 1993-05-26 | 1994-12-06 | 住友金属工業株式会社 | Snorkel for ladle refining |
| WO2011114001A1 (en) * | 2010-03-18 | 2011-09-22 | Borealis Ag | Method of repairing a pipe coating |
| CN203519179U (en) * | 2013-08-28 | 2014-04-02 | 沈阳泰合冶金测控技术有限公司 | Laterally-opened temperature-measuring tube tray locked by ball wedge |
| CN205403979U (en) * | 2016-01-08 | 2016-07-27 | 新疆八一钢铁股份有限公司 | Continuous temperature measurement tray that can fix a position |
| CN206420575U (en) * | 2017-01-24 | 2017-08-18 | 福建三钢闽光股份有限公司 | A kind of equipment for being easily repaired slag line on continuous temperature measuring tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106872060A (en) | 2017-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206650383U (en) | A kind of cable protection pipe | |
| CN103033043A (en) | Method for laying refractory bricks of large variable diameter part of 12,000t/d rotary kiln | |
| CN106872060B (en) | Equipment convenient for repairing slag line on continuous temperature measuring pipe and repairing method | |
| CN218765967U (en) | Fire-fighting pipeline shower nozzle detection device | |
| CN206420575U (en) | A kind of equipment for being easily repaired slag line on continuous temperature measuring tube | |
| CN209685074U (en) | A kind of architectural design wrap-up for conveniently checking drawing | |
| CN204456908U (en) | A kind of heavy beam equipment | |
| CN211310668U (en) | Steel plate lifting device for manufacturing stainless steel water tank | |
| CN108655670A (en) | A kind of high pressure stainless steel acetylene filling pipe construction technique | |
| CN101215968A (en) | Inclined shaft sliding mode structure and inclined shaft pull-crawling construction process | |
| CN103727933A (en) | Pipe installation centralized positioning device and positioning method thereof | |
| CN203586837U (en) | Connecting method for hanging pieces of preheater cyclone inner cylinder | |
| CN206530069U (en) | A kind of fast automatic binding apparatus of building bar | |
| CN205085629U (en) | Pulley bearing detaching device | |
| CN104034170B (en) | A kind of heat insulation repair and maintenance of the resistance to material method of heating furnace horizontal beam | |
| CN211825623U (en) | Soak and mould pipeline adhesive force detection device | |
| CN217000880U (en) | Toilet reserved sleeve positioning die | |
| CN205035962U (en) | Light pinhole hollow brick with can be in wall body pre -buried pipeline anyhow | |
| CN215315686U (en) | Refractory and corrosion-resistant brick cup | |
| CN201268547Y (en) | Special sling for circulating pipe | |
| CN208531308U (en) | A kind of octafluoro toluene tank | |
| CN220910707U (en) | Welded pipe with fracture preventing structure | |
| CN213167238U (en) | Wear-resistant and antibacterial bamboo plywood | |
| CN202180201U (en) | Protective sleeve for lower nozzle | |
| CN215165854U (en) | Improved concrete movable cover plate for pipe trench |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |