Some standard content:
National Standard of the People's Republic of China
Corrosion-resistant alloy grades
Designations of corrogation-resisting alloy This standard applies to the naming of corrosion-resistant alloy product grades and general provisions for chemical composition. 1 Classification
1.1 According to the basic forming method of the alloy, the alloy is divided into deformation corrosion-resistant alloy and forged corrosion-resistant alloy. GB/T 15007-94
Replaces CB 271-88
1.2 According to the basic constituent elements of the alloy, the alloy is divided into iron-nickel-based and nickel-based alloys. The iron-nickel-based alloy contains 30% to 50% nickel and the nickel plus iron is not less than 60%. The nickel-based alloy contains not less than 50%, 1.3 According to the main strengthening characteristics of the alloy, the alloy is divided into solid solution strengthening alloy and age hardening alloy. 2.1 Deformation corrosion resistant alloys 2.1.1 Use the Chinese phonetic letter symbol "NS" as a prefix (N and S are the first letter of "Xie" and "Kuai" respectively), followed by three Arabic numerals. 2.1.2 The first digit after the symbol "NS" indicates the classification number, that is: NS1××—indicates solid solution strengthened iron-nickel base alloy; NS3×× indicates solid solution strengthened nickel-based alloy; NS2××—indicates age hardening nickel-based alloy 1NS4XX indicates age hardening nickel-based alloy. 2.1-3 The second digit after the symbol "NS" indicates different alloy series numbers, such as: NS×I×—indicates nickel-chromium system;
indicates nickel-chromium-molybdenum system;
NS×2× indicates nickel-molybdenum system
indicates nickel-chromium-steel system.
2.1.4 The third digit after the symbol "NS" indicates the serial number of different alloy grades. 2.1.5 For corrosion-resistant alloy wire for welding, add "H" before the prefix symbol "NS" (the symbol "H" is the first letter of the Chinese pinyin for "weld"). In the future, "HNS" will be used as the prefix, followed by three Arabic numerals. The meaning of the numbers is alternate with that of the deformed corrosion-resistant alloys. 2.2 Casting corrosion-resistant alloys
Add the symbol Z before the prefix symbol NS ("Z" is the first letter of the Chinese pinyin for "cast"), that is, use "ZVS" as the prefix, followed by three Arabic numerals. The meaning of each numeral is alternate with that of the deformed corrosion-resistant alloys. 3 Naming of corrosion-resistant alloy grades
3.1 For corrosion-resistant alloy grades that have undergone scientific research, trial production and have been formally organized and identified by the competent authorities and transferred to mass production, the units applying for the transfer of production or the research units that require the bid shall submit the bid. Whoever is in charge shall submit the bid. The competent department or the unit it entrusts shall name the alloy in accordance with the rules specified in this standard. Other units shall not use the symbols specified in this standard to name the alloy arbitrarily.
4 Chemical composition of corrosion-resistant alloy grades
4.1 Deformed corrosion-resistant alloy grades and their chemical compositions are shown in Table 1.4.2 Casting corrosion-resistant alloy grades and their chemical compositions (temporarily unavailable). 4.3 The chemical composition of each alloy grade specified in this standard is only used to represent the usual chemical composition range of the alloy grade. It is allowed to specify a stricter chemical composition range in the product label or in the contract or agreement, or to make special restrictions on the content of residual elements and harmful impurities. Approved by the State Bureau of Technical Supervision on April 4, 1994 and implemented on May 1, 1994
Hexi Grade
0. 03--0. 10
.0.030
19. 0--23. 0
19. 0--23. 0
24. 0~26. 5
19. 0 ~21. 0
25. 0~27. 0
19,.5~23. 5
19. 0~21. 0
28.0~31.0
14. 0-~ 17. 0
21. 0~25. 0
35.0~38.0
27. 0~31. 0
14,0~17.0
17. 0-~19. 0
14. 5 ~~16. 6
14. 5 -16. 6
14. 0r~~ 18. 0
20. 0~23. 0
19. 0~~21. 0
19. 0~21. 0
19. 0 ~21. 0
GB/T 15007—94
30. 0---35. 0
30. 0~35. 0
34. 0~37. 0
42. 0--44. 0
34. 0~~37. 0
38.0~46.0
32. 0~38. 0
4.4 Chemical composition tolerance of finished products of deformation and corrosion alloysFe
6. 0~-10. 0
10, 0~15, 0
7. 0 ~-11. 0
4. 0~~7. 0
12. 5-~13. 5
2. 0~3. 0
26. 0~30, 0
26. 050. 0
2. 0 ~-3. 0
16. 0~18. 0
15.0~17. 0
15. 0~17.0
14. 0-~17. 0
8. 0~10. 0
15. 0-17. 0
2. 0~3. 0
3. 0 -~ 4. 5
3. 0 ~- 4. 5
3. 0~4. 0
1. 5~-3. 0
3. 0~-4. 0
1. 0~2. 0
When the finished product analysis of deformation corrosion resistant alloy is carried out, the chemical composition of the finished product is allowed to deviate from the chemical composition specified in Table 1 by the deviation specified in Table 2. Unless otherwise agreed upon by the supplier and the buyer, the alloy grades shall comply with the provisions of this standard. Al
0. 15~ 0. 600. 15 ~0. 60
0. 16~0. 60 : 0. 15 ~0. 60
0. 15 ~ 0. 45 1 0. 15 0. 60
1. 00-1. 70
0. 20~ 0. 50
: 0.60-1.20
0. 40 -~ 0. 90
D. 4 ~-D. 9
0, 40-~1. 00
2.25 ~2. 75
8×C~1. 00 | 50
≤0. 020
≤,0.030
.0. 015
.0.090
specifies the range of yuan cable
>1- 16 ~0, 50
≥0. 50 ~ 1. 00
>1. 00 ~2. 00 | | tt | 0
>30. 0 ~ 40. 0
≥40. 0 ~50. 0
>0. 5--1. 5
>1. 5~3, 0
0.50-1. 00
21. 00~~2. 00
>2.00~3.00
>0. 20 --1. 00
>1,00~5. 00
>5. ~-10. 0
>10. 0~20. 0
>20. 030. 0
>0. 20~0. 50
>0. 505.00
GB/T15007—94
Lower deviation
Allowable deviation
Upper reduction
Alloy grade
GB/T15007—94
Appendix A
Main characteristics and uses of corrosion-resistant alloys
(reference)
Main characteristics
Resistant to corrosion by oxidizing media, good resistance to carburization at high temperatureResistant to corrosion by oxidizing media, Resistant to high temperature carburizing, high thermal strength Resistant to stress corrosion of high overflow high pressure water and stress corrosion of caustic media Resistant to pitting corrosion in halogen ion redox composite media Resistant to oxidation-reduction medium corrosion and stress corrosion of chloride media Resistant to oxide stress corrosion and oxidation-reduction composite medium corrosion Resistant to oxidation-reduction composite medium corrosion
Resistant to strong oxidizing medium corrosion, high High temperature strength, corrosion resistance to strong oxidizing media and high-temperature nitric acid, hydrofluoric acid mixed media. Application examples: heat exchangers and steam generator tubes, synthetic fiber heat pipes, heating tubes, furnace grids and heat-resistant components in synthetic fiber engineering, steam generator tubes in nuclear power plants, hydrometallurgy, salt making, papermaking and synthetic fiber industries, chlorine-containing environments, sulfuric acid and sulfuric acid containing a variety of metal ions and group ions, heat exchangers and condensers, sulfuric acid environments containing a variety of ions, sulfuric acid environments and sulfuric acid solutions containing halogen ions and metal ions, such as hydrometallurgy and sulfuric acid industrial equipment, high-temperature nitric acid environments and strong corrosion conditions, heat treatment and chemical processing of non-magnetic components. Industrial equipment, highly corrosive nuclear engineering waste sintering furnaces, dissolvers for targets and components in the nuclear industry, nuclear power plant heat exchangers, evaporator tubes, nuclear engineering chemical post-processing corrosion-resistant structures, resistant to amides and high-temperature high-temperature water stress corrosion, resistant to strong oxidizing media HNO, HF Mixed corrosion
Resistant to strong reducing media
Resistant to strong reducing media, improved resistance to inter-product corrosionResistant to high humidity hydrogen fluoride, hydrogen chloride gas and fluorine gas corrosionEasy to form and weldResistant to oxidation-reduction media containing chlorine ions, pitting corrosionResistant to halogens and their compounds
Resistant to oxidation chloride aqueous solution and wet chlorine, hypoammonium saltsResistant to oxidation-reduction composite brain corrosion containing fluoride ions, good tissue thermal stabilityResistant to oxidation-reduction composite media, seawater corrosion, and high thermal strengthWelding materials, large welding coverage, resistant to harsh environment corrosionResistant to erosion and condensation corrosion of acidic media containing fluorine and oxygen ionsResistant to strengthening media corrosion, precipitation hardening, corrosion-resistant impact parts
Hot concentrated salt Acid and oxidizing ammonia gas devices and parts Devices in hydrochloric acid and medium-concentration sulfuric acid environments (especially at high temperatures) Chemical I, nuclear energy and non-ferrous metallurgy High-temperature hydrogen fluoride furnace tubes and piercing devices Mixed cyanide, sulfurous acid, hypochlorous acid, sulfuric acid, hydrochloric acid and ammonia solution devices Application devices in highly corrosive oxidation-reduction composite media and high-temperature seawater Welding components in highly corrosive oxidation-reduction composite media and high-temperature seawater
Wet cyanide, oxychloric acid, sulfuric acid, hydrochloric acid, mixed acid, oxide devices, direct application after welding
Chemical processing industry Severely corrosive environment or marine environment Welding of various high-chromium tin-based alloys and welding with stainless steel Chemical and hydrometallurgical condensers and furnace tubes, containers Ball valves and other oxidizing acids working in nitric acid Load-bearing components in this standard
Alloy No.
Alloy brands used in China
OCI20Ni32AIIT
ICt20Ni32AITi
0[KT2SNE35AITi
0Cr20N143Mo13
00C26Ni35M3CuAT
0Cr21N:12MuxCu2Ti
0Cr20N35Mo3CuAN
OSt3ONiT0
1Cr15Ni75F8
ICr2XNi60Fe1XAl||tt| |00Cr36Ni65A1
0C130NI60F-10
ON165Mo28Fe5V
DONiTOMo28
00Cr16Ni75M02Ti
00Cr18Ni60Mo17
UCr 15NI60Mo16W6Fe5
00cr15Ni60Mo16w5Fe5
00Ct16Ni65Mo16Ti
Cr20Ni65Mo10Nb
00Cr20NiG0Mo16
00Cr20Ni7 0Mo3Cu2Ti
OCI20Ni65Ti2AINbFe7
Additional Notes:
GB/T 15007—94
Appendix B
Comparison of Corrosion Resistant Alloy Brands at Home and Abroad
(Test Material)
ASTM of the United States
NOBBOO
(Incoloy Buu)
NO8810
(Incploy 8(DH)
N08825
(1nculy 825)
N08020
(Alloy 20cb8)
N06600
(Inconel 600)
NO6890
(lnconal 60)
N10001
(Hastelloy B)
N10665
(Hastelloy B. 2)
(Hastelloy C)
N10276
([nconel 625]
N06455
(Hagtelloy Cd)
N06625
(Inconel 625)
This standard was proposed by the Information and Standards Research Institute of the Ministry of Metallurgical Industry West Germany IN
NiC121Mo Z. 1858
NICr15Fe Z. 4816
Nicr23Fe 2. 4851
NIM028 Z.4617
NiMo16Cr15W Z. 4819
NiMo16Cr16Ti Z. 4610
NiCt22M09Nb 2. 4856
British BS
NAI5 Ni-l'e-Lr
NA16 Ni-Fc-Cr-Mo
NA14 NI-Cr-Fe
NA21 Nj-Cr-Mo-Nb
This standard was drafted by the General Information and Standards Research Institute of the Ministry of Metallurgical Industry and the General Iron and Steel Research Institute of the Ministry of Metallurgical Industry. JIS
NCF 800
(NCF 2)
NCF 825
NCF 600
(NCF 1B)
NCF 601Industrial equipment
Highly corrosive nuclear engineering waste sintering furnaces, dissolvers for targets and components in the nuclear industry
Nuclear power plant heat exchangers, evaporator tubes, nuclear engineering chemical post-processing corrosion-resistant structures, resistant to amines and high-temperature and high-temperature water stress corrosion, resistant to strong oxidizing media skin HNO, HF Mixed corrosion
Resistant to strong reducing media
Resistant to strong reducing media, improved resistance to inter-product corrosionResistant to high humidity hydrogen fluoride, hydrogen chloride gas and fluorine gas corrosionEasy to form and weldResistant to oxidation-reduction media containing chlorine ions, pitting corrosionResistant to halogens and their compounds
Resistant to oxidation chloride aqueous solution and wet chlorine, hypoammonium saltsResistant to oxidation-reduction composite brain corrosion containing fluoride ions, good tissue thermal stabilityResistant to oxidation-reduction composite media, seawater corrosion, and high thermal strengthWelding materials, large welding coverage, resistant to harsh environment corrosionResistant to erosion and condensation corrosion of acidic media containing fluorine and oxygen ionsResistant to strengthening media corrosion, precipitation hardening, corrosion-resistant impact parts
Hot concentrated salt Acid and oxidizing ammonia gas devices and parts Devices in hydrochloric acid and medium-concentration sulfuric acid environments (especially at high temperatures) Chemical I, nuclear energy and non-ferrous metallurgy High-temperature hydrogen fluoride furnace tubes and piercing devices Mixed cyanide, sulfurous acid, hypochlorous acid, sulfuric acid, hydrochloric acid and ammonia solution devices Application devices in highly corrosive oxidation-reduction composite media and high-temperature seawater Welding components in highly corrosive oxidation-reduction composite media and high-temperature seawater
Wet cyanide, oxychloric acid, sulfuric acid, hydrochloric acid, mixed acid, oxide devices, direct application after welding
Chemical processing industry Severely corrosive environment or marine environment Welding of various high-chromium tin-based alloys and welding with stainless steel Chemical and hydrometallurgical condensers and furnace tubes, containers Ball valves and other oxidizing acids working in nitric acid Load-bearing components in this standard
Alloy No.
Alloy brands used in China
OCI20Ni32AIIT
ICt20Ni32AITi
0[KT2SNE35AITi
0Cr20N143Mo13
00C26Ni35M3CuAT
0Cr21N:12MuxCu2Ti
0Cr20N35Mo3CuAN
OSt3ONiT0
1Cr15Ni75F8
ICr2XNi60Fe1XAl||tt| |00Cr36Ni65A1
0C130NI60F-10
ON165Mo28Fe5V
DONiTOMo28
00Cr16Ni75M02Ti
00Cr18Ni60Mo17
UCr 15NI60Mo16W6Fe5
00cr15Ni60Mo16w5Fe5
00Ct16Ni65Mo16Ti
Cr20Ni65Mo10Nb
00Cr20NiG0Mo16
00Cr20Ni7 0Mo3Cu2Ti
OCI20Ni65Ti2AINbFe7
Additional Notes:
GB/T 15007—94
Appendix B
Comparison of Corrosion Resistant Alloy Brands at Home and Abroad
(Test Material)
ASTM of the United States
NOBBOO
(Incoloy Buu)
NO8810
(Incploy 8(DH)
N08825
(1nculy 825)
N08020
(Alloy 20cb8)
N06600
(Inconel 600)
NO6890
(lnconal 60)
N10001
(Hastelloy B)
N10665
(Hastelloy B. 2)
(Hastelloy C)
N10276
([nconel 625]
N06455
(Hagtelloy Cd)
N06625
(Inconel 625)
This standard was proposed by the Information and Standards Research Institute of the Ministry of Metallurgical Industry West Germany IN
NiC121Mo Z. 1858
NICr15Fe Z. 4816
Nicr23Fe 2. 4851
NIM028 Z.4617
NiMo16Cr15W Z. 4819
NiMo16Cr16Ti Z. 4610
NiCt22M09Nb 2. 4856
British BS
NAI5 Ni-l'e-Lr
NA16 Ni-Fc-Cr-Mo
NA14 NI-Cr-Fe
NA21 Nj-Cr-Mo-Nb
This standard was drafted by the General Information and Standards Research Institute of the Ministry of Metallurgical Industry and the General Iron and Steel Research Institute of the Ministry of Metallurgical Industry. JIS
NCF 800
(NCF 2)
NCF 825
NCF 600
(NCF 1B)
NCF 601Industrial equipment
Highly corrosive nuclear engineering waste sintering furnaces, dissolvers for targets and components in the nuclear industry
Nuclear power plant heat exchangers, evaporator tubes, nuclear engineering chemical post-processing corrosion-resistant structures, resistant to amines and high-temperature and high-temperature water stress corrosion, resistant to strong oxidizing media skin HNO, HF Mixed corrosion
Resistant to strong reducing media
Resistant to strong reducing media, improved resistance to inter-product corrosionResistant to high humidity hydrogen fluoride, hydrogen chloride gas and fluorine gas corrosionEasy to form and weldResistant to oxidation-reduction media containing chlorine ions, pitting corrosionResistant to halogens and their compounds
Resistant to oxidation chloride aqueous solution and wet chlorine, hypoammonium saltsResistant to oxidation-reduction composite brain corrosion containing fluoride ions, good tissue thermal stabilityResistant to oxidation-reduction composite media, seawater corrosion, and high thermal strengthWelding materials, large welding coverage, resistant to harsh environment corrosionResistant to erosion and condensation corrosion of acidic media containing fluorine and oxygen ionsResistant to strengthening media corrosion, precipitation hardening, corrosion-resistant impact parts
Hot concentrated salt Acid and oxidizing ammonia gas devices and parts Devices in hydrochloric acid and medium-concentration sulfuric acid environments (especially at high temperatures) Chemical I, nuclear energy and non-ferrous metallurgy High-temperature hydrogen fluoride furnace tubes and piercing devices Mixed cyanide, sulfurous acid, hypochlorous acid, sulfuric acid, hydrochloric acid and ammonia solution devices Application devices in highly corrosive oxidation-reduction composite media and high-temperature seawater Welding components in highly corrosive oxidation-reduction composite media and high-temperature seawater
Wet cyanide, oxychloric acid, sulfuric acid, hydrochloric acid, mixed acid, oxide devices, direct application after welding
Chemical processing industry Severely corrosive environment or marine environment Welding of various high-chromium tin-based alloys and welding with stainless steel Chemical and hydrometallurgical condensers and furnace tubes, containers Ball valves and other oxidizing acids working in nitric acid Load-bearing components in this standard
Alloy No.
Alloy brands used in China
OCI20Ni32AIIT
ICt20Ni32AITi
0[KT2SNE35AITi
0Cr20N143Mo13
00C26Ni35M3CuAT
0Cr21N:12MuxCu2Ti
0Cr20N35Mo3CuAN
OSt3ONiT0
1Cr15Ni75F8
ICr2XNi60Fe1XAl||tt| |00Cr36Ni65A1
0C130NI60F-10
ON165Mo28Fe5V
DONiTOMo28
00Cr16Ni75M02Ti
00Cr18Ni60Mo17
UCr 15NI60Mo16W6Fe5
00cr15Ni60Mo16w5Fe5
00Ct16Ni65Mo16Ti
Cr20Ni65Mo10Nb
00Cr20NiG0Mo16
00Cr20Ni7 0Mo3Cu2Ti
OCI20Ni65Ti2AINbFe7
Additional Notes:
GB/T 15007—94
Appendix B
Comparison of Corrosion Resistant Alloy Brands at Home and Abroad
(Test Material)
ASTM of the United States
NOBBOO
(Incoloy Buu)
NO8810
(Incploy 8(DH)
N08825
(1nculy 825)
N08020
(Alloy 20cb8)
N06600
(Inconel 600)
NO6890
(lnconal 60)
N10001
(Hastelloy B)
N10665
(Hastelloy B. 2)
(Hastelloy C)
N10276
([nconel 625]
N06455
(Hagtelloy Cd)
N06625
(Inconel 625)
This standard was proposed by the Information and Standards Research Institute of the Ministry of Metallurgical Industry West Germany IN
NiC121Mo Z. 1858
NICr15Fe Z. 4816
Nicr23Fe 2. 4851
NIM028 Z.4617
NiMo16Cr15W Z. 4819
NiMo16Cr16Ti Z. 4610
NiCt22M09Nb 2. 4856
British BS
NAI5 Ni-l'e-Lr
NA16 Ni-Fc-Cr-Mo
NA14 NI-Cr-Fe
NA21 Nj-Cr-Mo-Nb
This standard was drafted by the General Information and Standards Research Institute of the Ministry of Metallurgical Industry and the General Iron and Steel Research Institute of the Ministry of Metallurgical Industry. JIS
NCF 800
(NCF 2)
NCF 825
NCF 600
(NCF 1B)
NCF 60112MuxCu2Ti
0Cr20N35Mo3CuAN
OSt3ONiT0
1Cr15Ni75F8
ICr2XNi60Fe 1XAl
00Cr36Ni65A1
0C130NI60F-10
ON165Mo28Fe5V
DONiTOMo28||tt| |00Cr16Ni75M02Ti
00Cr18Ni60Mo17
UCr15NI60Mo16W6Fe5
00cr15Ni60Mo16w 5Fe5
00Ct16Ni65Mo16Ti
Cr20Ni65Mo10Nb
00Cr20NiG0Mo16
00Cr20Ni7 0Mo3Cu2Ti
OCI20Ni65Ti2AINbFe7
Additional instructions:
GB/T 15007—94
Appendix B
Comparison of domestic and foreign corrosion-resistant alloy grades
(Test material)
American ASTM
NOBBOO
(Incoloy Buu)
NO8810
(Incploy 8(DH)
N08825| |tt||(1nculy 825)
N08020
(Alloy 20cb8)
N06600
(Inconel 600)
NO6890
( lnconal 60)
N10001
(Hastelloy B)
N10665
(Hastelloy B. 2)
(Hastelloy C)
N10276| |tt||([nconel 625]
N06455
(Hagtelloy Cd)
N06625
(Inconel 625)
This standard is issued by the Metallurgical Industry The Ministry of Information and Standards Research Institute proposed West Germany IN
NiC121Mo Z. 1858
NICr15Fe Z. 4816
Nicr23Fe 2. 4851
NIM028 Z.4617
NiMo16Cr15W Z. 4819
NiMo16Cr16Ti Z. 4610
NiCt22M09Nb 2. 4856
British BS
NAI5 Ni-l'e-Lr
NA16 Ni-Fc-Cr-Mo
NA14 NI-Cr-Fe
NA21 Nj-Cr-Mo-Nb
This standard is issued by the Ministry of Metallurgical Industry Information Standard The General Research Institute and the Central Iron and Steel Research Institute of the Ministry of Metallurgical Industry were responsible for drafting the document. JIS
NCF 800
(NCF 2)
NCF 825
NCF 600
(NCF 1B)
NCF 60112MuxCu2Ti
0Cr20N35Mo3CuAN
OSt3ONiT0
1Cr15Ni75F8
ICr2XNi60Fe 1XAl
00Cr36Ni65A1
0C130NI60F-10
ON165Mo28Fe5V
DONiTOMo28||tt| |00Cr16Ni75M02Ti
00Cr18Ni60Mo17
UCr15NI60Mo16W6Fe5bzxz.net
00cr15Ni60Mo16w 5Fe5
00Ct16Ni65Mo16Ti
Cr20Ni65Mo10Nb
00Cr20NiG0Mo16
00Cr20Ni7 0Mo3Cu2Ti
OCI20Ni65Ti2AINbFe7
Additional instructions:
GB/T 15007—94
Appendix B
Comparison of domestic and foreign corrosion-resistant alloy grades
(Test material)
American ASTM
NOBBOO
(Incoloy Buu)
NO8810
(Incploy 8(DH)
N08825| |tt||(1nculy 825)
N08020
(Alloy 20cb8)
N06600
(Inconel 600)
NO6890
( lnconal 60)
N10001
(Hastelloy B)
N10665
(Hastelloy B. 2)
(Hastelloy C)
N10276| |tt||([nconel 625]
N06455
(Hagtelloy Cd)
N06625
(Inconel 625)
This standard is issued by the Metallurgical Industry The Ministry of Information and Standards Research Institute proposed West Germany IN
NiC121Mo Z. 1858
NICr15Fe Z. 4816
Nicr23Fe 2. 4851
NIM028 Z.4617
NiMo16Cr15W Z. 4819
NiMo16Cr16Ti Z. 4610
NiCt22M09Nb 2. 4856
British BS
NAI5 Ni-l'e-Lr
NA16 Ni-Fc-Cr-Mo
NA14 NI-Cr-Fe
NA21 Nj-Cr-Mo-Nb
This standard is issued by the Ministry of Metallurgical Industry Information Standard The General Research Institute and the Central Iron and Steel Research Institute of the Ministry of Metallurgical Industry were responsible for drafting the document. JIS
NCF 800
(NCF 2)
NCF 825
NCF 600
(NCF 1B)
NCF 601
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