CN106756556A - Korea Spro marks SD400 spirals with ribbing and its production method - Google Patents

Korea Spro marks SD400 spirals with ribbing and its production method Download PDF

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Publication number
CN106756556A
CN106756556A CN201611183317.9A CN201611183317A CN106756556A CN 106756556 A CN106756556 A CN 106756556A CN 201611183317 A CN201611183317 A CN 201611183317A CN 106756556 A CN106756556 A CN 106756556A
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CN
China
Prior art keywords
production method
ribbing
spirals
reinforcing bar
korea spro
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Pending
Application number
CN201611183317.9A
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Chinese (zh)
Inventor
梁均
张俊粉
韩春良
张春雷
王井伟
关大伟
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HBIS Co Ltd Chengde Branch
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HBIS Co Ltd Chengde Branch
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Priority to CN201611183317.9A priority Critical patent/CN106756556A/en
Publication of CN106756556A publication Critical patent/CN106756556A/en
Pending legal-status Critical Current

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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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/18—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
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Civil Engineering (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention discloses a kind of Korea Spro mark SD400 spirals with ribbing and its production method, the reinforcing bar chemical composition and weight/mass percentage composition are：C：0.17%~0.25%, Si：0.20%~0.50%, Mn：0.80%~1.30%, P≤0.045%, S≤0.045%, V：0.030%~0.060%, Cr：0.30%~0.50%, N：0.018%~0.025%, Mo≤0.20%, Ni≤0.20%, Cu≤0.20%, balance of Fe and inevitable impurity.Production method include heating, roughing, in roll, finish rolling and refrigerating work procedure.This method carries out alloying by taking the low manganese of low-carbon (LC) plus vanadium, the rational heating-up temperature of matching design and cooling controlling and rolling controlling process, Korea Spro's mark SD400 spirals with ribbing that inexpensive production performance is qualified, bending property is excellent are realized, with good economic and social benefit.

Description

Korea Spro marks SD400 spirals with ribbing and its production method
Technical field
The invention belongs to metallurgical technology field, and in particular to a kind of Korea Spro marks SD400 spirals with ribbing and its production method.
Background technology
Hot-rolled reinforced bar is the main reinforcing material of reinforced concrete buildingses, with high level, large span, antidetonation, resistance to low The appearance of the multi-use architecture structure such as temperature, fire resisting, it is desirable to which reinforcing bar has intensity higher, toughness and preferable solderability etc. comprehensive Performance.SD400 is to perform South Korea KS D 3504:Feature yield strength is 400MPa grades of hot-rolled ribbed screw-thread steel in 2011 standards One of trade mark；KS D 3504:Clear stipulaties are made that to the composition of SD400 reinforcing bars, performance, appearance and size in 2011 standards.
Currently, because V, N reinforcing are using mechanical properties such as insufficient, " ring rib " unreasonable, yield strengths of configuration design The reason such as index request is strict, bending property requirement is strict, Korea Spro's mark reinforcing bar production has that production cost is high, " ring rib " profile is not Easily meet the problem of standard requirement and bending property difference.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of Korea Spro's mark SD400 spirals with ribbing and its production method, should Reinforcement yielding intensity and tensile strength are satisfied by that Korea Spro's mark is required, configuration design is reasonable, bending property is qualified, present invention also offers A kind of Korea Spro marks the production method of SD400 spirals with ribbing.
In order to solve the above technical problems, the present invention uses following technical proposals：A kind of Korea Spro marks SD400 spirals with ribbing, The reinforcing bar chemical composition and weight/mass percentage composition are：C：0.17%~0.25%, Si：0.20%~0.50%, Mn：0.80%~ 1.30%, P≤0.045%, S≤0.045%, V：0.030%~0.060%, Cr：0.30%~0.50%, N：0.018%~0.025%, Mo≤0.20%, Ni≤0.20%, Cu≤0.20%, balance of Fe and inevitable impurity.
Reinforcing bar Ceq≤0.55% of the present invention.
Reinforcing bar profile of the present invention is designed using " ring rib ", i.e. reinforcing bar cross rib and perpendicular 90 ° of longitudinal rib, and cross rib is etc. Rib high.
The present invention also provides the production method that a kind of above-mentioned Korea Spro marks SD400 spirals with ribbing, and the production method includes Heating, roughing, in roll, finish rolling and refrigerating work procedure；Using the steel billet of following weight/mass percentage composition compositions：The reinforcing bar chemical composition And weight/mass percentage composition is：C：0.17%~0.25%, Si：0.20%~0.50%, Mn：0.80%~1.30%, P≤0.045%, S≤ 0.045%, V：0.030%~0.060%, Cr：0.30%~0.50%, N：0.018%~0.025%, Mo≤0.20%, Ni≤0.20%, Cu≤0.20%, balance of Fe and inevitable impurity.
Heating process of the present invention, soaking temperature is 1070~1150 DEG C, and tapping temperature is 1030~1070 DEG C.
Finishing rolling step of the present invention, does not use after finish to gauge and wears hydraulic art.
Roughing operation of the present invention：Started temperature is 1010~1050 DEG C；Finishing temperature is 1040~1070 DEG C.
Refrigerating work procedure of the present invention, cold bed position temperature is 940~980 DEG C.
Mentality of designing of the present invention：The present invention marks KS D 3504 according to Korea Spro:2011 pairs of requirements of composition, it is determined that C, Si, The content of the elements such as Mn, Cr, while considering the influence for adding micro alloying element V to intensity index.Micro alloying element V can be tied with N Synthesizing nitride, precipitation strength effect is played in low temperature；Appropriate N content, coordinates rational rolling temperature and cooling velocity, Invigoration effects of the V in steel can be made to perform to maximum, so as to reduce the alloying element addition that Mn, Cr etc. play invigoration effect Amount, and then reach the purpose for reducing production cost.On hole type design, take into full account that Korea Spro's mark reinforcing bar profile is set using " ring rib " Meter, i.e. reinforcing bar cross rib and perpendicular 90 ° of longitudinal rib, cross rib are contour rib.
Reinforcing bar outward appearance logo design method of the present invention is as follows：Rebar surface rolls original producton location mark, holds steel mark successively Knowledge, bar gauge, steel strength grade.
It is using the beneficial effect produced by above-mentioned technical proposal：
1st, the present invention is by optimizing and revising the content of C, Si, Mn, Cr element, and adds micro alloying element V, can reduce carbon nitridation The Precipitation Temperature and brittle transition temperature of thing, so as to be effectively improved tensile strength, toughness and the yield strength of reinforcing bar, and then Obtain tensile strength and the satisfactory Korea Spro's mark SD400 spirals with ribbing of yield strength.
2nd, the present invention reaches V, N strengthening mechanism by controlling appropriate N content, rational rolling temperature and the type of cooling To maximum, the stability of properties of product was both ensure that, the addition of the alloying elements such as Mn, Cr had been reduced again, and reduced and be produced into This.
3rd, on hole type design, take into full account that Korea Spro's mark reinforcing bar profile is designed using " ring rib ", i.e. reinforcing bar cross rib and longitudinal rib Perpendicular 90 °, cross rib is contour rib, it is ensured that reinforcing bar appearance and size meets the requirement of Korea Standard.
4th, because Korea Spro marks reinforcing bar profile and GB reinforcing bar profile difference is larger, and require that strictly this method is low by taking The low manganese of carbon adds the vanadium to carry out alloying, the rational heating-up temperature of matching design and cooling controlling and rolling controlling process, realizes inexpensive productivity The excellent Korea Spro's mark SD400 spirals with ribbing of the qualified, bending property of energy, with good economic and social benefit.
Brief description of the drawings
Fig. 1 is Korea Spro's mark SD400 reinforcing bars outward appearance mark schematic diagram of the present invention.
Wherein：1- cross ribs, 3- longitudinal ribs；
" C " is identified for original producton location（Take out a cross rib）；
The Yanshan Mountain is designated as corporate logo（Take out a cross rib）；
22 is product specification（Take out two cross ribs）；
4 represent reinforcing bar rank（Take out two cross ribs）.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
The steel billet composition that each embodiment is used is shown in Table 1.
Table 1：Steel billet component content in each embodiment（wt%）
Embodiment C Si Mn P S V Cr N Mo Ni Cu Ceq
1 0.23 0.26 1.03 0.036 0.009 0.043 0.35 0.020 0.030 0.014 0.012 0.48
2 0.23 0.29 1.12 0.021 0.025 0.051 0.34 0.019 0.040 0.015 0.014 0.49
3 0.24 0.29 1.12 0.021 0.025 0.051 0.34 0.023 0.040 0.015 0.014 0.50
4 0.17 0.50 1.30 0.030 0.045 0.030 0.30 0.018 0.020 0.200 0.018 0.45
5 0.25 0.20 0.80 0.045 0.010 0.060 0.50 0.025 0.200 0.022 0.200 0.52
Note：Balance of Fe and inevitable impurity.
Embodiment 1
This Korea Spro mark SD400 reinforcing bars are prepared from using following concrete technologies, and rolling specs are Φ 10mm.
Steel billet is put into the heating furnace that soaking zone furnace temperature is 1105~1135 DEG C and is heated, be in the soaking time of soaking zone 32 minutes, steel billet is set to be come out of the stove after reaching 1066 DEG C.Steel billet after heating carried out after high-pressure water descaling slightly, in, finish rolling rolling, slightly Started temperature is rolled for 1031 DEG C；Finishing temperature is 1062 DEG C；Cold bed position temperature is 955 DEG C after 3# multi-length shears.The present embodiment The rolled mechanical property of gained reinforcing bar is shown in Table 2.
Embodiment 2
This Korea Spro mark SD400 reinforcing bars are prepared from using following concrete technologies, and rolling specs are Φ 22mm.
Steel billet is put into the heating furnace that soaking zone furnace temperature is 1100~1130 DEG C and is heated, be in the soaking time of soaking zone 30 minutes, steel billet is set to be come out of the stove after reaching 1062 DEG C.Steel billet after heating carried out after high-pressure water descaling slightly, in, finish rolling rolling, slightly Started temperature is rolled for 1030 DEG C；Finishing temperature is 1060 DEG C；Cold bed position temperature is 950 DEG C after 3# multi-length shears.The present embodiment The rolled mechanical property of gained reinforcing bar is shown in Table 2.
Embodiment 3
This Korea Spro mark SD400 reinforcing bars are prepared from using following concrete technologies, and rolling specs are Φ 32mm.
Steel billet is put into the heating furnace that soaking zone furnace temperature is 1095~1125 DEG C and is heated, be in the soaking time of soaking zone 28 minutes, steel billet is set to be come out of the stove after reaching 1055 DEG C.Steel billet after heating carried out after high-pressure water descaling slightly, in, finish rolling rolling, slightly Started temperature is rolled for 1028 DEG C；Finishing temperature is 1058 DEG C；Cold bed position temperature is 945 DEG C after 3# multi-length shears.The present embodiment The rolled mechanical property of gained reinforcing bar is shown in Table 2.
Embodiment 4
This Korea Spro mark SD400 reinforcing bars are prepared from using following concrete technologies, and rolling specs are Φ 22mm.
Steel billet is put into the heating furnace that soaking zone furnace temperature is 1070~1100 DEG C and is heated, be in the soaking time of soaking zone 30 minutes, steel billet is set to be come out of the stove after reaching 1030 DEG C.Steel billet after heating carried out after high-pressure water descaling slightly, in, finish rolling rolling, slightly Started temperature is rolled for 1010 DEG C；Finishing temperature is 1040 DEG C；Cold bed position temperature is 940 DEG C after 3# multi-length shears.The present embodiment The rolled mechanical property of gained reinforcing bar is shown in Table 2.
Embodiment 5
This Korea Spro mark SD400 reinforcing bars are prepared from using following concrete technologies, and rolling specs are Φ 32mm.
Steel billet is put into the heating furnace that soaking zone furnace temperature is 1120~1150 DEG C and is heated, be in the soaking time of soaking zone 28 minutes, steel billet is set to be come out of the stove after reaching 1070 DEG C.Steel billet after heating carried out after high-pressure water descaling slightly, in, finish rolling rolling, slightly Started temperature is rolled for 1050 DEG C；Finishing temperature is 1070 DEG C；Cold bed position temperature is 980 DEG C after 3# multi-length shears.The present embodiment The rolled mechanical property of gained reinforcing bar is shown in Table 2.
Korea Spro's mark SD400 reinforcing bars of above-described embodiment production, count rolled mechanical property, and statistics is shown in Table 2.
Table 2：The rolled mechanical property of each embodiment gained reinforcing bar
From the mechanics property analysis of table 2, Korea Spro's mark SD400 reinforcing bars of above-described embodiment production all meet KS D 3504: The requirement of 2011 standards.

Claims (8)

1. a kind of Korea Spro marks SD400 spirals with ribbing, it is characterised in that the reinforcing bar chemical composition and weight/mass percentage composition are： C：0.17%~0.25%, Si：0.20%~0.50%, Mn：0.80%~1.30%, P≤0.045%, S≤0.045%, V：0.030%~ 0.060%, Cr：0.30%~0.50%, N：0.018%~0.025%, Mo≤0.20%, Ni≤0.20%, Cu≤0.20% are balance of Fe and inevitable impurity.
2. a kind of Korea Spro according to claim 1 marks SD400 spirals with ribbing, it is characterised in that and the reinforcing bar Ceq≤ 0.55%。
3. a kind of Korea Spro according to claim 1 marks SD400 spirals with ribbing, it is characterised in that the reinforcing bar profile is adopted Designed with " ring rib ", i.e. reinforcing bar cross rib and perpendicular 90 ° of longitudinal rib, cross rib is contour rib.
4. the production method of SD400 spirals with ribbing, its feature are marked based on a kind of Korea Spro described in claim 1-3 any one Be, the production method include heating, roughing, in roll, finish rolling and refrigerating work procedure；Using following weight/mass percentage composition compositions Steel billet：The reinforcing bar chemical composition and weight/mass percentage composition are：C：0.17%~0.25%, Si：0.20%~0.50%, Mn：0.80% ~1.30%, P≤0.045%, S≤0.045%, V：0.030%~0.060%, Cr：0.30%~0.50%, N：0.018%~ 0.025%, Mo≤0.20%, Ni≤0.20%, Cu≤0.20%, balance of Fe and inevitable impurity.
5. production method according to claim 4, it is characterised in that the heating process, soaking temperature is 1070~ 1150 DEG C, tapping temperature is 1030~1070 DEG C.
6. production method according to claim 4, it is characterised in that the finishing rolling step, does not use after finish to gauge and wears water conservancy project Skill.
7. production method according to claim 4, it is characterised in that the roughing operation：Started temperature be 1010~ 1050℃；Finishing temperature is 1040~1070 DEG C.
8. production method according to claim 4, it is characterised in that the refrigerating work procedure, cold bed position temperature is 940~ 980℃。
CN201611183317.9A 2016-12-20 2016-12-20 Korea Spro marks SD400 spirals with ribbing and its production method Pending CN106756556A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107604261A (en) * 2017-07-18 2018-01-19 河钢股份有限公司承德分公司 Mark SD345 spirals with ribbing and its production method a kind of day
CN107747061A (en) * 2017-09-14 2018-03-02 河钢股份有限公司 A kind of 630MPa levels high-strength tenacity hot rolled ribbed bars and its production method
CN107779767A (en) * 2017-09-28 2018-03-09 宣化钢铁集团有限责任公司 Add the English mark B500B spirals and its production technology of micro- nitrogen alloy
CN107937817A (en) * 2017-11-08 2018-04-20 宣化钢铁集团有限责任公司 Korea Spro marks SD600S.D10~D41 specifications reinforcing bar and production method
CN107974628A (en) * 2017-11-08 2018-05-01 宣化钢铁集团有限责任公司 Korea Spro marks SD500S.D10~D41 specifications reinforcing bar and production method
CN108342643A (en) * 2018-01-26 2018-07-31 河钢股份有限公司承德分公司 A kind of Korea Spro marks SD500 valve snails steel and its production method
CN112609133A (en) * 2020-12-10 2021-04-06 九江市钒宇新材料股份有限公司 Vanadium-nitrogen steel bar with good anti-seismic effect for building materials and production method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008280608A (en) * 2007-04-13 2008-11-20 Jfe Steel Kk High-strength hot-dip galvanized steel sheet excellent in workability and weldability, and its manufacturing method
CN104233074A (en) * 2013-11-13 2014-12-24 马钢(集团)控股有限公司 Steel for chromium-containing vanadium-nitrogen micro-alloyed 400MPa level reinforcing steel bar and production method thereof
CN104372246A (en) * 2014-11-11 2015-02-25 江苏省沙钢钢铁研究院有限公司 400 MPa-level tungstenic corrosion-resistant twisted steel and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008280608A (en) * 2007-04-13 2008-11-20 Jfe Steel Kk High-strength hot-dip galvanized steel sheet excellent in workability and weldability, and its manufacturing method
CN104233074A (en) * 2013-11-13 2014-12-24 马钢(集团)控股有限公司 Steel for chromium-containing vanadium-nitrogen micro-alloyed 400MPa level reinforcing steel bar and production method thereof
CN104372246A (en) * 2014-11-11 2015-02-25 江苏省沙钢钢铁研究院有限公司 400 MPa-level tungstenic corrosion-resistant twisted steel and preparation method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107604261A (en) * 2017-07-18 2018-01-19 河钢股份有限公司承德分公司 Mark SD345 spirals with ribbing and its production method a kind of day
CN107747061A (en) * 2017-09-14 2018-03-02 河钢股份有限公司 A kind of 630MPa levels high-strength tenacity hot rolled ribbed bars and its production method
CN107779767A (en) * 2017-09-28 2018-03-09 宣化钢铁集团有限责任公司 Add the English mark B500B spirals and its production technology of micro- nitrogen alloy
CN107779767B (en) * 2017-09-28 2019-10-18 宣化钢铁集团有限责任公司 The English mark B500B spiral and its production technology of micro- nitrogen alloy is added
CN107937817A (en) * 2017-11-08 2018-04-20 宣化钢铁集团有限责任公司 Korea Spro marks SD600S.D10~D41 specifications reinforcing bar and production method
CN107974628A (en) * 2017-11-08 2018-05-01 宣化钢铁集团有限责任公司 Korea Spro marks SD500S.D10~D41 specifications reinforcing bar and production method
CN108342643A (en) * 2018-01-26 2018-07-31 河钢股份有限公司承德分公司 A kind of Korea Spro marks SD500 valve snails steel and its production method
CN112609133A (en) * 2020-12-10 2021-04-06 九江市钒宇新材料股份有限公司 Vanadium-nitrogen steel bar with good anti-seismic effect for building materials and production method thereof
CN112609133B (en) * 2020-12-10 2022-05-20 九江市钒宇新材料股份有限公司 Vanadium-nitrogen steel bar with good anti-seismic effect for building materials and production method thereof

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