CN109266957A - Modified Z2CND18-12N material flange and its forging method - Google Patents
Modified Z2CND18-12N material flange and its forging method Download PDFInfo
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- CN109266957A CN109266957A CN201811086091.XA CN201811086091A CN109266957A CN 109266957 A CN109266957 A CN 109266957A CN 201811086091 A CN201811086091 A CN 201811086091A CN 109266957 A CN109266957 A CN 109266957A
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- forging
- z2cnd18
- modified
- blank
- material flange
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Abstract
The invention discloses modified Z2CND18-12N material flange and its forging methods, it is characterized by: the weight percent of the chemical constituent of the modified Z2CND18-12N material flange are as follows: C:0.005-0.035%, Si:0.05-0.1%, Mn:0.05-2.0%, P :≤0.03%, S :≤0.015%, Cr:17.00-18.20%, Ni:11.50-12.50%, Mo:2.25-2.75%, Cu:0.05-1.0%, N :≤0.08%, remaining is Fe.Flange of the invention optimizes material component, and using forging preincubation, more fire time forgings, the removal of high/low temperature internal stress and cooling forging method, can be improved the tensile strength, impact resistance and corrosion resistance of flange.
Description
Technical field:
The present invention relates to flange material and the processing technique fields of flange material, are specifically related to modified Z2CND18-
12N material flange and its forging method.
Background technique:
Flange has a wide range of applications in nuclear power industry and petrochemical industry, however existing flange resists at high temperature
Tensile strength is poor, and corrosion resistance and impact resistance are also poor under room temperature, thus need after a period of use and
Shi Jinhang replacement, such material and artificial cost are higher, develop a kind of high tensile strength, corrosion resistance and impact resistance
Good flange can be improved the service life that flange uses, to reduce material and artificial cost.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention:
The purpose of the present invention is to provide modified Z2CND18-12N material flange and its forging methods, thus on overcoming
State defect in the prior art.
To achieve the above object, described the present invention provides modified Z2CND18-12N material flange and its forging method
The weight percent of the chemical constituent of modified Z2CND18-12N material flange are as follows: C:0.005-0.035%, Si:0.05-
0.1%, Mn:0.05-2.0%, P :≤0.03%, S :≤0.015%, Cr:17.00-18.20%, Ni:11.50-12.50%,
Mo:2.25-2.75%, Cu:0.05-1.0%, N :≤0.08%, remaining is Fe, the modified Z2CND18-12N material method
Blue forging method includes the following steps:
(1) heating before forging: forge furnace is heated to 400-450 DEG C, the base of the modified Z2CND18-12N material flange
Material is added in forge furnace, forge furnace is warming up to 700 DEG C with the speed of 50 DEG C/min, and keep the temperature 20-60min；
(2) it forges: forge furnace being heated to 1200-1300 DEG C with the speed of 200 DEG C/min, just forging, forging are carried out to blank
Time is 15-20min；Forge furnace is cooled to 950-1080 DEG C with the speed of 50 DEG C/min again, finish-forging, forging are carried out to blank
Time is 25-40min；Step 3-5 times of just forging and finish-forging is repeated, deformation≤20% of blank, forging are kept in forging process
Than >=4；
(3) it is heat-treated: being heated to 1010-1150 DEG C by forge furnace and keep the temperature 30-40min drop again with the speed of 50 DEG C/min
Temperature is to 750-800 DEG C and keeps the temperature the internal stress that 25-30min removes blank, repeats this process 2-3 times, completely removes the interior of blank
Stress；
(4) cooling: recycle stream will to be put by the modified Z2CND18-12N material flange blank of step (3) processing
It is rapidly cooled in dynamic water, obtains modified Z2CND18-12N material flange finished product.
The weight percent of the chemical constituent of the modified Z2CND18-12N material flange are as follows: C:0.005-
0.025%, Si:0.05-0.1%, Mn:0.75-1.5%, P :≤0.03%, S :≤0.015%, Cr:17.50-18.00%,
Ni:11.80-12.20%, Mo:2.50-2.75%, N :≤0.08%, remaining is Fe.
The weight percent of the chemical constituent of the modified Z2CND18-12N material flange are as follows: C:0.02%, Si:
0.08%, Mn:1.2%, P :≤0.03%, S :≤0.015%, Cr:17.80%, Ni:12.00%, Mo:2.60%, N :≤
0.08%, remaining is Fe.
Stove heating is forged before the forging of the step (1) in heating process using fuel heating, resistance heating or induction heating.
The fire time of step (2) forging is 4 times, and the shape of blank becomes 10-15%, forging ratio 4-5 in forging process.
Compared with prior art, the invention has the following beneficial effects:
Flange of the invention optimizes material component, and forging preincubation, more fire time is used to forge, answer in high/low temperature
Power removal and cooling forging method, can be improved the tensile strength, impact resistance and corrosion resistance of flange.
Specific embodiment:
Specific embodiments of the present invention will be described in detail below, it is to be understood that protection scope of the present invention is not
It is restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
Embodiment 1:
The weight percent of the chemical constituent of the modified Z2CND18-12N material flange are as follows: C:0.02%, Si:
0.08%, Mn:1.2%, P:0.03%, S:0.015%, Cr:17.80%, Ni:12.00%, Mo:2.60%, N:0.08%,
Remaining is Fe,
The forging method of the modified Z2CND18-12N material flange, comprising the following steps:
(1) heating before forging: forge furnace is heated to 400 DEG C, by modified Z2CND18-12N material described in claim 1
The blank of flange is added in forge furnace, forge furnace is warming up to 700 DEG C with the speed of 50 DEG C/min, and keep the temperature 40min；
(2) it forges: forge furnace being heated to 1250 DEG C with the speed of 200 DEG C/min, just forging, forging time are carried out to blank
For 18min；Forge furnace is cooled to 1080 DEG C with the speed of 50 DEG C/min again, finish-forging, forging time 30min are carried out to blank；
The step 4 time of just forging and finish-forging is repeated, keeps the shape of blank to become 15% in forging process, forging ratio 4；
(3) it is heat-treated: being heated to 1010 DEG C by forge furnace and keep the temperature 35min cool to 750 again with the speed of 50 DEG C/min
DEG C and keep the temperature 30min removal blank internal stress, repeat this process 3 times, completely remove the internal stress of blank；
(4) cooling: recycle stream will to be put by the modified Z2CND18-12N material flange blank of step (3) processing
It is rapidly cooled in dynamic water, obtains modified Z2CND18-12N material flange finished product.
The forging stove heating uses induction heating.
Embodiment 2:
The weight percent of the chemical constituent of the modified Z2CND18-12N material flange are as follows: C:0.025%, Si:
0.1%, Mn:1.5%, P:0.02%, S:0.012%, Cr:18.00%, Ni:12.20%, Mo:2.75%, N:0.07%,
Remaining is Fe,
The forging method of the modified Z2CND18-12N material flange, comprising the following steps:
(1) heating before forging: forge furnace is heated to 450 DEG C, by modified Z2CND18-12N material described in claim 1
The blank of flange is added in forge furnace, forge furnace is warming up to 700 DEG C with the speed of 50 DEG C/min, and keep the temperature 30min；
(2) it forges: forge furnace being heated to 1300 DEG C with the speed of 200 DEG C/min, just forging, forging time are carried out to blank
For 15min；Forge furnace is cooled to 950 DEG C with the speed of 50 DEG C/min again, finish-forging, forging time 40min are carried out to blank；
The step 3 time of just forging and finish-forging is repeated, keeps the shape of blank to become 18% in forging process, forging ratio 4.5；
(3) it is heat-treated: being heated to 1150 DEG C by forge furnace and keep the temperature 30min cool to 800 again with the speed of 50 DEG C/min
DEG C and keep the temperature 28min removal blank internal stress, repeat this process 2 times, completely remove the internal stress of blank；
(4) cooling: recycle stream will to be put by the modified Z2CND18-12N material flange blank of step (3) processing
It is rapidly cooled in dynamic water, obtains modified Z2CND18-12N material flange finished product.
The forging stove heating uses resistance heating.
Embodiment 3:
The weight percent of the chemical constituent of the modified Z2CND18-12N material flange are as follows: C:0.005%, Si:
0.05%, Mn:0.75%, P:0.02%, S:0.015%, Cr:17.50%, Ni:11.80%, Mo:2.50%, N:0.06%,
Remaining is Fe,
The forging method of the modified Z2CND18-12N material flange, comprising the following steps:
(1) heating before forging: forge furnace is heated to 450 DEG C, by modified Z2CND18-12N material described in claim 1
The blank of flange is added in forge furnace, forge furnace is warming up to 700 DEG C with the speed of 50 DEG C/min, and keep the temperature 40min；
(2) it forges: forge furnace being heated to 1200 DEG C with the speed of 200 DEG C/min, just forging, forging time are carried out to blank
For 20min；Forge furnace is cooled to 1000 DEG C with the speed of 50 DEG C/min again, finish-forging, forging time 30min are carried out to blank；
The step 2 time of just forging and finish-forging is repeated, keeps the shape of blank to become 15% in forging process, forging ratio 4；
(3) it is heat-treated: being heated to 1100 DEG C by forge furnace and keep the temperature 35min cool to 780 again with the speed of 50 DEG C/min
DEG C and keep the temperature 25min removal blank internal stress, repeat this process 3 times, completely remove the internal stress of blank；
(4) cooling: recycle stream will to be put by the modified Z2CND18-12N material flange blank of step (3) processing
It is rapidly cooled in dynamic water, obtains modified Z2CND18-12N material flange finished product.
The forging stove heating uses resistance heating.
Comparative example 1:
The weight percent of the chemical constituent of the modified Z2CND18-12N material flange are as follows: C:0.02%, Si:
0.08%, Mn:1.2%, P:0.03%, S:0.015%, Cr:15.00%, Ni:12.00%, Mo:2.60%, N:0.08%,
Remaining is Fe, and forging method is the same as embodiment 1.
Comparative example 2:
The weight percent of the chemical constituent of the modified Z2CND18-12N material flange are as follows: C:0.02%, Si:
0.08%, Mn:1.2%, P:0.03%, S:0.015%, Cr:15.00%, Ni:12.00%, Mo:2.60%, N:0.08%,
Remaining is Fe, and forging method is the same as embodiment 3.
Comparative example 3:
The weight percent of the chemical constituent of modified Z2CND18-12N material flange are as follows: C:0.01%, Si:0.08%,
Mn:1.2%, P:0.02%, S:0.01%, Cr:15.00%, Ni:3.5%, Mo:1.8%, N:0.07%, remaining is Fe.
The forging method of modified Z2CND18-12N material flange, comprising the following steps:
(1) heating before forging: forge furnace is heated to 450 DEG C, by modified Z2CND18-12N material described in claim 1
The blank of flange is added in forge furnace, forge furnace is warming up to 700 DEG C with the speed of 50 DEG C/min, and keep the temperature 40min；
(2) it forges: forge furnace being heated to 1200 DEG C with the speed of 200 DEG C/min, just forging, forging time are carried out to blank
For 20min；Again with the speed of 50 DEG C/min by forge furnace cool to 1000 DEG C to blank carry out finish-forging, forging time 30min,
The shape of blank is kept to become 15% in forging process, forging ratio 4；
(3) it is heat-treated: being heated to 1100 DEG C by forge furnace and keep the temperature 35min cool to 780 again with the speed of 50 DEG C/min
DEG C and keep the temperature 25min removal blank internal stress；
(4) cooling: recycle stream will to be put by the modified Z2CND18-12N material flange blank of step (3) processing
It is rapidly cooled in dynamic water, obtains modified Z2CND18-12N material flange finished product.
The forging stove heating uses resistance heating.
To embodiment 1, embodiment 2, embodiment 3,3 progressive of comparative example 1, comparative example 2 and comparative example
It can test, experimental result is as follows:
Corrosion-resistant rate test is specifically: being cleaned after sample is weighed with acetone, is then placed in the H that concentration is 35%2SO4
It in solution, is impregnated under 25 ± 2 DEG C of constant temperatures for 24 hours, weighs after rinsing well, calculated further according to following formula: V=W/
At, wherein V refers to corrosion rate, mg/cm2h；W refers to the difference of corrosion front and back sample mass, g；A refers to specimen surface product, cm2；T refers to leaching
Steep time, h.
Flange of the invention optimizes material component from the experimental results, and using forging preincubation, more fire time forgings
It makes, the removal of high/low temperature internal stress and cooling forging method, can be improved the tensile strength of flange, impact resistance and corrosion-resistant
Property.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose, these descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.
Claims (5)
1. modified Z2CND18-12N material flange and its forging method, it is characterised in that: the modified Z2CND18-12N
The weight percent of the chemical constituent of material flange are as follows: C:0.005-0.035%, Si:0.05-0.1%, Mn:0.05-2.0%,
P :≤0.03%, S :≤0.015%, Cr:17.00-18.20%, Ni:11.50-12.50%, Mo:2.25-2.75%, Cu:
0.05-1.0%, N :≤0.08%, remaining is Fe, and the forging method of the modified Z2CND18-12N material flange includes such as
Lower step:
(1) heating before forging: forge furnace is heated to 400-450 DEG C, and the blank of the modified Z2CND18-12N material flange adds
Enter into forge furnace, forge furnace is warming up to 700 DEG C with the speed of 50 DEG C/min, and keep the temperature 20-60min；
(2) it forges: forge furnace being heated to 1200-1300 DEG C with the speed of 200 DEG C/min, just forging, forging time are carried out to blank
For 15-20min；Forge furnace is cooled to 950-1080 DEG C with the speed of 50 DEG C/min again, finish-forging, forging time are carried out to blank
For 25-40min；Step 3-5 times of just forging and finish-forging is repeated, deformation≤20% of holding blank in forging process, forging ratio >=
4；
(3) it is heat-treated: being heated to 1010-1150 DEG C by forge furnace and keep the temperature 30-40min cool to again with the speed of 50 DEG C/min
750-800 DEG C and keep the temperature 25-30min removal blank internal stress, repeat this process 2-3 times, completely remove the internal stress of blank；
(4) cooling: to circulate water for being put by the modified Z2CND18-12N material flange blank of step (3) processing
In be rapidly cooled, obtain modified Z2CND18-12N material flange finished product.
2. modified Z2CND18-12N material flange according to claim 1 and its forging method, it is characterised in that: institute
State the weight percent of the chemical constituent of modified Z2CND18-12N material flange are as follows: C:0.005-0.025%, Si:0.05-
0.1%, Mn:0.75-1.5%, P :≤0.03%, S :≤0.015%, Cr:17.50-18.00%, Ni:11.80-12.20%,
Mo:2.50-2.75%, N :≤0.08%, remaining is Fe.
3. modified Z2CND18-12N material flange according to claim 1 and its forging method, it is characterised in that: institute
State the weight percent of the chemical constituent of modified Z2CND18-12N material flange are as follows: C:0.02%, Si:0.08%, Mn:
1.2%, P :≤0.03%, S :≤0.015%, Cr:17.80%, Ni:12.00%, Mo:2.60%, N :≤0.08%, remaining
For Fe.
4. modified Z2CND18-12N material flange according to claim 1 and its forging method, it is characterised in that: institute
Forging stove heating is stated before the forging of step (1) in heating process using fuel heating, resistance heating or induction heating.
5. modified Z2CND18-12N material flange according to claim 1 and its forging method, it is characterised in that: institute
The fire time for stating step (2) forging is 4 times, and the shape of blank becomes 10-15%, forging ratio 4-5 in forging process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811086091.XA CN109266957A (en) | 2018-09-18 | 2018-09-18 | Modified Z2CND18-12N material flange and its forging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811086091.XA CN109266957A (en) | 2018-09-18 | 2018-09-18 | Modified Z2CND18-12N material flange and its forging method |
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| Publication Number | Publication Date |
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| CN109266957A true CN109266957A (en) | 2019-01-25 |
Family
ID=65197502
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|---|---|---|---|
| CN201811086091.XA Pending CN109266957A (en) | 2018-09-18 | 2018-09-18 | Modified Z2CND18-12N material flange and its forging method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953767A (en) * | 2021-11-05 | 2022-01-21 | 江苏浙瓯法兰有限公司 | Stainless steel flange suitable for low-temperature working condition and production process and device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1738687A (en) * | 2003-01-20 | 2006-02-22 | 新日本制铁株式会社 | Metal foil tube and method and apparatus for production thereof |
| CN1768156A (en) * | 2003-03-02 | 2006-05-03 | 山特维克知识产权股份有限公司 | Duplex stainless steel alloy for use in seawater applications |
| CN101169984A (en) * | 2007-11-29 | 2008-04-30 | 贵州航天新力铸锻有限责任公司 | Million-kilowatts-class nuclear power pressure container safe end manufacture process |
| CN101748342B (en) * | 2008-11-28 | 2011-11-23 | 宝山钢铁股份有限公司 | High-strength 18Cr-8Ni stainless steel hot rolled plate and manufacturing method thereof |
| CN102601282A (en) * | 2012-03-08 | 2012-07-25 | 无锡市法兰锻造有限公司 | Z2CND18-12N control nitrogen stainless steel forging technology |
| CN103352175A (en) * | 2013-06-24 | 2013-10-16 | 钢铁研究总院 | Nitrogen-containing austenitic stainless steel and manufacturing method thereof |
| CN103361570A (en) * | 2013-07-26 | 2013-10-23 | 钢铁研究总院 | Martensite stainless steel annular forging and heat treatment technology thereof |
| CN105838862A (en) * | 2016-05-26 | 2016-08-10 | 中国科学院金属研究所 | Method for refining grains of maraging stainless steel by cyclic phase transformation |
-
2018
- 2018-09-18 CN CN201811086091.XA patent/CN109266957A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1738687A (en) * | 2003-01-20 | 2006-02-22 | 新日本制铁株式会社 | Metal foil tube and method and apparatus for production thereof |
| CN1768156A (en) * | 2003-03-02 | 2006-05-03 | 山特维克知识产权股份有限公司 | Duplex stainless steel alloy for use in seawater applications |
| CN101169984A (en) * | 2007-11-29 | 2008-04-30 | 贵州航天新力铸锻有限责任公司 | Million-kilowatts-class nuclear power pressure container safe end manufacture process |
| CN101748342B (en) * | 2008-11-28 | 2011-11-23 | 宝山钢铁股份有限公司 | High-strength 18Cr-8Ni stainless steel hot rolled plate and manufacturing method thereof |
| CN102601282A (en) * | 2012-03-08 | 2012-07-25 | 无锡市法兰锻造有限公司 | Z2CND18-12N control nitrogen stainless steel forging technology |
| CN103352175A (en) * | 2013-06-24 | 2013-10-16 | 钢铁研究总院 | Nitrogen-containing austenitic stainless steel and manufacturing method thereof |
| CN103361570A (en) * | 2013-07-26 | 2013-10-23 | 钢铁研究总院 | Martensite stainless steel annular forging and heat treatment technology thereof |
| CN105838862A (en) * | 2016-05-26 | 2016-08-10 | 中国科学院金属研究所 | Method for refining grains of maraging stainless steel by cyclic phase transformation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953767A (en) * | 2021-11-05 | 2022-01-21 | 江苏浙瓯法兰有限公司 | Stainless steel flange suitable for low-temperature working condition and production process and device |
| CN113953767B (en) * | 2021-11-05 | 2022-11-01 | 江苏浙瓯法兰有限公司 | Stainless steel flange suitable for low-temperature working condition and production process and device |
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