CN210438845U - Pickling bath for stainless seamless pipe - Google Patents
Pickling bath for stainless seamless pipe Download PDFInfo
- Publication number
- CN210438845U CN210438845U CN201921417141.8U CN201921417141U CN210438845U CN 210438845 U CN210438845 U CN 210438845U CN 201921417141 U CN201921417141 U CN 201921417141U CN 210438845 U CN210438845 U CN 210438845U
- Authority
- CN
- China
- Prior art keywords
- pickling
- tank
- pickling tank
- pickling bath
- bath
- 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
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The utility model discloses a nonrust seamless pipe pickling bath relates to seamless pipe processing production technical field, and its technical scheme main points are: the pickling tank comprises a pickling tank, wherein a cover plate is hermetically arranged at a tank opening of the pickling tank, the cover plate is arranged above the pickling tank in a sliding manner along the length direction of the pickling tank, a recovery tank is arranged at one tail end of the pickling tank, a scraper is arranged on the tank wall of the recovery tank, and the scraper is positioned above the recovery tank and abuts against the inner wall of the cover plate; has the purpose of reducing environmental pollution.
Description
Technical Field
The utility model relates to a seamless pipe processing production technical field, more specifically says, it relates to a nonrust seamless pipe pickling bath.
Background
When stainless steel is hot-rolled from a steel slab into various plates and profiles, the surface is exposed to O in the air2The oxidation generates a black and yellow dense oxide layer, and the processed stainless steel must be subjected to pickling treatment in order to improve the appearance and corrosion resistance of the stainless steel. In the prior art, mixed acid (HNO) is generally adopted in the acid cleaning of the stainless seamless pipe3+ HF) acid cleaning process to form oxide film protecting layer on the surface and raise the corrosion resisting capacity of the steel pipe; the mixed acid has strong corrosivity and oxidizability, which puts high requirements on the corrosion resistance of pickling line equipment and materials; acid picklingThe pickling bath generally takes two forms, namely a trench type, namely the pickling bath is embedded in a trench which is positioned on the ground and is concave inwards, and the trench is matched with the size of the pickling bath. Secondly, the steel pipe is in a floor type, namely, the steel pipe is mainly soaked in the pickling solution when the pickling tank is used for pickling.
The Chinese patent with the publication number of CN202705496U discloses a stainless steel pipe pickling tank, which comprises a tank body, wherein the tank body comprises a tank wall, and the tank wall comprises a metal intermediate layer and epoxy glass resin layers coated on the inner side and the outer side of the metal intermediate layer.
In the above patent, can produce acid mist and attach to the apron on pickling bath upper portion during the pickling of nonrust seamless pipe, when the apron was opened completely and was got the pipe operation, because the acidizing fluid that assembles on the action of gravity makes the apron drops, causes the pollution of environment.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects existing in the prior art, the utility model aims to provide a pickling tank for stainless seamless pipes, which has the purpose of reducing environmental pollution.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a nonrust seamless pipe pickling bath, includes the pickling bath the sealed apron that is provided with of pool mouth department of pickling bath, the apron is arranged in the top of pickling bath along the length direction sliding of pickling bath one end of pickling bath has been arranged the accumulator on the cell wall of accumulator is provided with the scraper blade, just the scraper blade is located the top of accumulator and contradicts on the inner wall of apron.
So set up, after the pickling of seamless pipe in the pickling bath finishes, through being located the pickling bath top with the apron and sliding, the pickling bath is opened gradually to the apron, during the apron is located the motion of pickling bath top, the scraper blade is contradicted on the inner wall of apron, make relative motion between the inner wall of scraper blade and apron, and with the acid mist liquid drop on the apron inner wall assemble back rethread gravity action scrape fall to the accumulator in, realize that the apron inner wall contains the liquid drop of acid mist and get rid of and retrieve, it drops at will to reduce the apron and open acid mist on the back shroud inner wall, the purpose that has the environmental pollution that reduces.
Further setting: the cover plate is arranged in an arch shape.
So set up, make its apron inner wall form the arch face, be convenient for assemble the acid mist in the inner wall both sides through the action of gravity, the effect that the rethread scraper blade is convenient for get rid of the acid mist droplet on the inner wall.
Further setting: the scraper is provided with an acid-resistant rubber pad which is abutted against the inner wall of the cover plate.
So set up, make the acidproof rubber pad on its scraper blade act on the internal face of apron, have certain acid-fast nature, improve the life of scraper blade, improve its performance.
Further setting: the pickling tank is characterized in that rollers are rotatably installed on two sides of the cover plate, installation guide rails are fixedly arranged on two sides of the pickling tank along the length direction of the pickling tank, the rollers are arranged on the installation guide rails in a rolling mode, and the cover plate is driven by a driving device to be in reciprocating motion above the pickling tank.
So set up, impel the gyro wheel to be in through drive arrangement and roll on the installation guide rail, produce relative movement between apron and the pickling bath, realize the apron to the effect of opening or sealing between the pickling bath.
Further setting: the periphery of the opening of the pickling tank is provided with a high-pressure water spray head used for washing a seamless pipe in the pickling tank, and the high-pressure water spray head is connected with a water supply source.
By the arrangement, the seamless pipe after being pickled in the pickling tank is washed by the high-pressure water spray head, so that the pickling quality of the seamless pipe after being pickled is improved.
Further setting: and air spray heads used for drying the seamless pipes subjected to pickling in the pickling tank are arranged on the periphery of the opening of the pickling tank, and the air spray heads are connected with an air pump.
By the arrangement, the seamless pipe after being pickled in the pickling tank is blown by the air nozzle, so that the pickling quality of the seamless pipe after being pickled is improved.
Further setting: and a heater is arranged at the bottom of the pickling tank.
By the arrangement, the acid liquor in the acid washing tank is heated during acid washing, so that the acid washing quality and the acid washing efficiency during acid washing are improved; in the process of re-drying, the heating is carried out by a heater, so that the drying efficiency after pickling and drying is improved.
Further setting: and a plurality of stirring paddles are arranged at the bottom of the pickling tank.
So set up, through stirring the acidizing fluid in the pickling bath during pickling, pickling quality and pickling efficiency when improving the pickling.
Further setting: and an acid mist detector for detecting the concentration of acid mist in the pickling tank is arranged outside the cover plate.
So set up, detect the acid mist in the pickling bath through the period at the pickling, real time monitoring when improving the pickling, and then improve the pickling quality of pickling wait seamless pipe.
Further setting: the inner tank wall of the pickling tank is provided with an epoxy resin corrosion-resistant layer.
So set up, make the interior wall of its pickling bath have certain corrosion resistance through epoxy corrosion resistant layer, improve the life of pickling bath, improve its performance.
By adopting the technical scheme, the utility model discloses relative prior art compares, has following advantage:
1. the roller is driven to roll on the installation guide rail through the driving device, the cover plate and the pickling tank move relatively, the acid-proof rubber pad on the scraper is abutted against the inner wall of the cover plate, so that the acid-proof rubber pad and the inner wall of the cover plate move relatively, acid mist liquid drops on the inner wall of the cover plate are converged and then scraped into the recovery tank through the action of gravity, the liquid drops containing acid mist on the inner wall of the cover plate are removed and recovered, the phenomenon that the acid mist on the inner wall of the cover plate drops at will after the cover plate is opened is reduced, and the purpose of reducing environmental pollution is achieved;
2. the acid liquor in the acid washing tank is heated during acid washing, so that the acid washing quality and the acid washing efficiency during acid washing are improved; in the process of secondary blow-drying, the heating is carried out by a heater, so that the blow-drying efficiency after pickling and blow-drying is improved;
3. the acid mist in the pickling tank is detected during pickling, the high-pressure water jet washes the pickled seamless pipe in the pickling tank, and the air jet blows the pickled seamless pipe in the pickling tank, so that the pickling quality of the pickled seamless pipe is improved.
Drawings
FIG. 1 is a diagram showing a state in pickling in a pickling bath for a stainless seamless pipe;
FIG. 2 is a state diagram of the stainless seamless tube pickling tank with the cover plate opened;
FIG. 3 is a cross-sectional view at the level of a stainless seamless tube pickling bath;
FIG. 4 is a cross-sectional view at a vertical plane of a stainless seamless tube pickling bath;
FIG. 5 is a partial structural view of a recovery tank in a pickling bath for a stainless seamless pipe.
In the figure: 1. a pickling tank; 11. a support plate; 12. a drive member; 13. a heater; 14. a stirring paddle; 15. a high pressure water jet head; 16. an air shower; 17. a recovery tank; 2. a cover plate; 21. a roller; 22. installing a guide rail; 23. an acid mist detector; 3. a drive device; 4. a squeegee; 5. acid-resistant rubber pad.
Detailed Description
The pickling tank for the stainless seamless pipe is further explained with reference to the attached drawings.
Example 1: a pickling tank for a stainless seamless pipe comprises a pickling tank 1 and a cover plate 2 which is arranged at the opening of the pickling tank 1 in a sliding manner and is in an arch shape, as shown in figure 1.
As shown in fig. 1, a plurality of rollers 21 are rotatably mounted on two sides of the cover plate 2, mounting rails 22 are fixedly arranged on two sides of the pickling tank 1 along the length direction of the pickling tank, and the rollers 21 on the two sides are respectively arranged on the mounting rails 22 on the two sides in a rolling manner; meanwhile, the cover plate 2 is driven by the driving device 3 to be in reciprocating motion above the pickling tank 1, so that the cover plate 2 is arranged above the pickling tank 1 in a sliding mode along the length direction of the pickling tank 1, and the effect of sealing or opening the tank opening of the pickling tank 1 by the cover plate 2 is achieved. The drive 3 may be a winch arrangement or a chain drive arrangement.
As shown in fig. 2 and 3, a plurality of supporting plates 11 are slidably inserted into two symmetrical walls of the pickling tank 1, the supporting plates 11 are U-shaped plates, and the supporting plates 11 on the same horizontal plane are arranged in an array and are sequentially connected through a connecting rod; the multiple rows of supporting plates 11 are arranged at equal intervals along the vertical direction of the wall of the pickling tank 1, and the supporting plates 11 on adjacent rows are arranged in a staggered manner; the outer wall of the pickling tank 1 is fixedly provided with a driving part 12, such as an air cylinder or a hydraulic cylinder or a linkage shaft mechanism, the driving part 12 sequentially drives the supporting plate 11 on the same horizontal plane to be inserted on the wall of the pickling tank 1 in a reciprocating sliding manner, and the effect that the supporting plate 11 protrudes out or is accommodated on the wall of the pickling tank 1 is realized.
As shown in FIGS. 2 and 3, in order to improve the pickling process of seamless pipes in the pickling tank 1, a heater 13 is installed at the bottom of the pickling tank 1, so that the liquid temperature of the pickling tank 1 during pickling is between 50 and 60 ℃; meanwhile, in order to improve the uniformity of the acid liquor in the pickling tank 1, a plurality of stirring paddles 14 are arranged at the bottom of the pickling tank 1.
As shown in fig. 2 and 4, in order to perform a washing step of the seamless pipe after the inside of the pickling tank 1 is pickled, a high-pressure water jet 15 for washing the seamless pipe inside the pickling tank 1 is provided around the tank opening of the pickling tank 1, and a water supply source is connected to the high-pressure water jet 15.
As shown in fig. 2 and 4, in order to perform a drying process of the seamless pipe after the washing in the pickling tank 1, an air nozzle 16 for drying the seamless pipe after the washing in the pickling tank 1 is disposed around the tank opening of the pickling tank 1, and an air pump is connected to the air nozzle 16.
As shown in fig. 4, in order to monitor the acid mist concentration in the pickling tank 1 in real time during pickling, an acid mist detector 23 for detecting the acid mist concentration in the pickling tank 1 is provided outside the cover plate 2; in order to improve the corrosion resistance of the pickling tank 1, an epoxy resin corrosion-resistant layer is arranged on the inner tank wall of the pickling tank 1.
As shown in fig. 4 and 5, for the purpose of reducing the environmental pollution of the pickling tank 1, a recovery tank 17 is disposed at one end of the pickling tank 1, a scraper 4 is disposed on a tank wall of the recovery tank 17, an acid-resistant rubber pad 5 is fixedly disposed on the scraper 4, the acid-resistant rubber pad 5 is any one of a silica gel pad, a fluorine rubber pad, an ethylene propylene diene monomer rubber pad and an acrylate rubber pad, and the acid-resistant rubber pad 5 is located above the recovery tank 17 and abuts against an inner wall of the cover plate 2.
The working principle is as follows: the cover plate 2 on the pickling tank 1 is opened through the driving device 3, the supporting plate 11 at the lowest position in the pickling tank 1 protrudes out of the tank wall of the pickling tank 1 through the driving piece 12, then seamless pipes are placed on the supporting plate 11 on the same horizontal plane through corresponding hoisting equipment, then the supporting plate 11 in the second row protrudes out of the tank wall of the pickling tank 1 through the driving piece 12, the hoisting equipment hoists the seamless pipes and the supporting plate 11 in the row again, and therefore multiple rows of seamless pipes are sequentially placed on the supporting plate 11, and the purpose that the seamless pipes are placed in the pickling tank 1 is achieved; the cover plate 2 is sealed at the opening of the pickling tank 1 by the driving device 3, then the seamless pipe in the pickling tank 1 is pickled by a pickling process, the seamless pipe in the pickling tank 1 is washed by the pickling process sequentially through the high-pressure water spray head 15, the cover plate 2 is opened by the driving device 3, and during the pickling process, acid mist water drops on the inner wall of the cover plate 2 are removed by the scraper 4, so that the acid mist drops fall into the recovery tank 17 after being gathered, and the purpose that the acid mist drops on the inner wall of the cover plate 2 randomly after the cover plate 2 is opened is reduced; and finally, the seamless pipe washed in the pickling tank 1 is dried through the air nozzle 16, so that the effect of drying the seamless pipe after pickling is realized, and the aims of improving the pickling effect of the stainless seamless pipe and reducing the environmental pollution are fulfilled.
Example 2: an acid washing process for a stainless seamless tube based on embodiment 1 is shown in the attached drawings, and specifically comprises the following steps:
s1, placing a seamless pipe: the seamless pipe is hoisted to a U-shaped supporting plate 11 in the pickling tank 1 through hoisting equipment, the supporting plate 11 on the same horizontal plane is controlled to protrude out of the outer tank wall of the pickling tank 1 through a driving piece 12 in sequence, the seamless pipe is arranged in the pickling tank 1 in a staggered manner in a matrix shape, and then the cover plate 2 is sealed on the tank opening of the pickling tank 1.
S2, crude acid washing: after the cover plate 2 is sealed in the pickling tank 1, introducing the crude acid solution in the crude acid storage tank into the pickling tank 1 to enable the seamless pipe to be soaked in the crude acid solution; then, adding 1.5 wt% of emulsifier, 0.35 wt% of corrosion inhibitor and 0.35 wt% of acid mist inhibitor into the pickling tank 1, starting a heater 13 and a stirring paddle 14 at the bottom of the pickling tank 1 to enable the temperature of the pickling tank 1 during pickling to be 50-60 ℃, soaking for 120-150 min, and discharging the crude acid solution in the pickling tank 1 into a crude acid storage tank after oxide skin and rust are removed; meanwhile, the acid mist concentration in the pickling tank 1 is detected in real time by an acid mist detector 23 outside the cover plate 2.
S2, washing: discharging the crude acid solution in the pickling tank 1 back to the crude acid storage tank, introducing clean water into the pickling tank 1 through the water storage tank, soaking the seamless tube in the clean water for 10-15 min, and discharging the clean water out of the pickling tank 1.
S3, fine pickling: introducing the refined acid solution in the refined acid storage tank into an acid washing tank 1, wherein the refined acid solution adopts HNO3And HF mixed solution, wherein HNO3Soaking the seamless pipe in a refined acid solution with the content of 220g/l, the content of HF (hydrogen fluoride) of 30g/l and the content of metal ions of 15g/l for 10-20 min, and discharging the refined acid solution in the pickling tank 1 into a refined acid storage tank; during the period, the heater 13 and the stirring paddle 14 at the bottom of the pickling tank 1 are started, so that the temperature of the liquid in the pickling tank 1 during pickling is between 50 and 60 ℃, and the acid mist concentration in the pickling tank 1 is detected in real time through the acid mist detector 23 outside the cover plate 2.
S4, high-pressure water washing: and (2) discharging the concentrated acid solution in the pickling tank 1 back into a concentrated acid storage tank, introducing clear water into the pickling tank 1 through the water storage tank, soaking the seamless pipe in the clear water for 20-30 min, discharging the clear water out of the pickling tank 1, and washing the seamless pipe in the pickling tank 1 through a high-pressure water spray head 15 arranged on the periphery of a tank opening of the pickling tank 1.
S5, drying: after washing, discharging the washing water in the pickling tank 1 out of the pickling tank 1, controlling the cover plate 2 to slide along the length direction of the pickling tank 1 through the driving device 3, enabling the roller 21 to be positioned on the installation guide rail 22 to roll, gradually opening the pickling tank 1 by the cover plate 2, enabling the acid-resistant rubber pad 5 on the scraper 4 to be abutted against the inner wall of the cover plate 2 during the movement of the cover plate 2 above the pickling tank 1, enabling the acid-resistant rubber pad 5 and the inner wall of the cover plate 2 to move relatively, and scraping acid mist water drops on the inner wall of the cover plate 2 into the recovery tank 17 to achieve the purpose of removing the acid mist-containing water drops on the inner wall of the cover plate 2; after the cover plate 2 completely opens the pickling tank 1, the seamless pipe in the pickling tank 1 is dried through the air spray nozzles 16 arranged on the periphery of the opening of the pickling tank 1, and meanwhile, the heater 13 is opened.
S6, detection and cleaning: after the seamless pipes in the pickling tank 1 are dried, a row of seamless pipes on a uniform horizontal plane are sequentially hung outside the pickling tank 1 through a hoisting device, finally, the stainless seamless pipes are cleaned and detected, and meanwhile, the inside of the pickling tank 1 is cleaned for the next pickling process.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides a nonrust seamless pipe pickling bath, includes pickling bath (1), its characterized in that: the sealed apron (2) that is provided with of pool mouth department of pickling bath (1), apron (2) are arranged in the top of pickling bath (1) along the length direction sliding of pickling bath (1) one end of pickling bath (1) has arranged accumulator (17) be provided with scraper blade (4) on the cell wall of accumulator (17), just scraper blade (4) are located the top of accumulator (17) and are contradicted on the inner wall of apron (2).
2. The pickling bath for stainless seamless pipes as claimed in claim 1, wherein: the cover plate (2) is arranged in an arch shape.
3. A pickling bath for stainless seamless tubes according to claim 1 or 2, characterized in that: an acid-resistant rubber pad (5) is arranged on the scraper (4), and the acid-resistant rubber pad (5) is abutted against the inner wall of the cover plate (2).
4. The pickling bath for stainless seamless pipes as claimed in claim 1, wherein: the both sides of apron (2) are rotated and are installed gyro wheel (21) the both sides of pickling bath (1) are provided with installation guide rail (22) along its length direction is fixed, gyro wheel (21) roll arrange in on installation guide rail (22), apron (2) are in pickling bath (1) top reciprocating motion through a drive arrangement (3) drive apron (2).
5. The pickling bath for stainless seamless pipes as claimed in claim 1, wherein: the pickling tank is characterized in that a high-pressure water spray head (15) used for washing a seamless pipe in the pickling tank (1) is arranged on the periphery of a tank opening of the pickling tank (1), and the high-pressure water spray head (15) is connected with a water supply source.
6. The pickling bath for stainless seamless pipes as claimed in claim 1, wherein: the pickling tank is characterized in that air spray heads (16) used for drying the seamless pipes after pickling in the pickling tank (1) are arranged on the periphery of the tank opening of the pickling tank (1), and the air spray heads (16) are connected with an air pump.
7. The pickling bath for stainless seamless pipes as claimed in claim 1, wherein: a heater (13) is installed at the bottom of the pickling tank (1).
8. The pickling bath for stainless seamless pipes as claimed in claim 1, wherein: a plurality of stirring paddles (14) are arranged at the bottom of the pickling tank (1).
9. The pickling bath for stainless seamless pipes as claimed in claim 1, wherein: an acid mist detector (23) for detecting the concentration of acid mist in the pickling tank (1) is arranged outside the cover plate (2).
10. The pickling bath for stainless seamless pipes as claimed in claim 1, wherein: the inner tank wall of the pickling tank (1) is provided with an epoxy resin corrosion-resistant layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417141.8U CN210438845U (en) | 2019-08-28 | 2019-08-28 | Pickling bath for stainless seamless pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417141.8U CN210438845U (en) | 2019-08-28 | 2019-08-28 | Pickling bath for stainless seamless pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210438845U true CN210438845U (en) | 2020-05-01 |
Family
ID=70409450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921417141.8U Active CN210438845U (en) | 2019-08-28 | 2019-08-28 | Pickling bath for stainless seamless pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210438845U (en) |
-
2019
- 2019-08-28 CN CN201921417141.8U patent/CN210438845U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210438844U (en) | Pickling device for stainless seamless pipe | |
| CN102534690A (en) | Automatic processing method for follow-up working section for electrolyzing manganese and zinc through wet method | |
| CN110079814A (en) | A kind of etched foil multi-layer cleaning structure | |
| CN111621794A (en) | Steel surface pickling processing system | |
| CN105780034B (en) | A kind of stainless steel pipe descaling bath | |
| CN110387553B (en) | Pickling process of stainless seamless tube | |
| CN210230877U (en) | Belt cleaning device is used in hot-galvanize processing | |
| CN210438845U (en) | Pickling bath for stainless seamless pipe | |
| CN108468055A (en) | A kind of safe and efficient corrosion acid washing rolled steel equipment | |
| CN207091510U (en) | High efficiency pickling machine | |
| CN213680901U (en) | Scrap iron retrieves and uses acid dip pickle | |
| CN110055544A (en) | Vertical steel pipe descaling bath | |
| CN212223110U (en) | Steel surface pickling processing system | |
| CN211921708U (en) | Reverse flushing system for cold rolling and pickling process section | |
| CN104694948B (en) | A kind of prestress wire aeration pickling tube and acid washing method | |
| CN214160659U (en) | High-pressure flushing device for residues on wire rod coil surface | |
| CN111394738B (en) | Hot galvanizing spiral-flow type pickling device | |
| CN212426188U (en) | Plate surface pickling equipment | |
| CN114700322A (en) | Cleaning tank, quartz tube cleaning machine and quartz tube cleaning method | |
| CN206619515U (en) | A kind of efficient aluminium foil cleaning device | |
| CN112916441A (en) | Residual anode cleaning device capable of being hung in electrolytic refining cell | |
| CN208146559U (en) | A kind of cask washing unit, multistation barrel-cleaning plant | |
| CN220352209U (en) | Safe type hot dip galvanize equipment | |
| CN111778512A (en) | Pickling equipment and pickling method for producing steel plate by using same | |
| CN111952686A (en) | Discharge device for batch processing of square waste lithium ion batteries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of stainless seamless pipe pickling tank Effective date of registration: 20221102 Granted publication date: 20200501 Pledgee: Wenzhou Financing Guarantee Co.,Ltd. Pledgor: Zhejiang Fengye Group Co.,Ltd. Registration number: Y2022110000301 |