Company introduction
XG Iron Steel Co., Ltd. (XG), located in Hunan province, was founded in 1958. It is a large scale key iron and steel complex in china, and is also one of the important manufacturing enterprises of domestic plates, wires, rods and metal products. Through more than 50 years development, the ten million tons of comprehensive steel production volume per annual has come into being.
XG has one whole set of production devices involved in coke making, sintering, iron making, steel making and rolling, of which the imported high speed wire rod rolling machines as well as wide and heave plates production equipment have reached the advanced level internationally. By one series of technical reforming measures, the company has upgraded its products. The new developed products of wire rods are such four series as high carbon steels, cold heading steels, electrode steels and steels for drawing Rods and bars mainly include tubular billets, carbon structural round bars, alloy structural round bars and steels for gears. Plates are mostly composed of normal carbon structure steel plates, high strength structural steel plates (products supplied in hest-treated or controlled rolled condition) as well as steel plates for building structure, boilers, pressure vessels, mould and pipelines. The percentage of quality steels is above 90%.
Among the products, 12 have won various prizes awarded by national, provincial government, as well as the Ministry of Metallurgy. High-speed wire rods and wires for mines are assessed as the famous brand products of Hunan province and gain the national approval of products quality. Wire ropes for excavators have won national silver prize and "Golden Cup Prize" of actual quality. The products have not only dominated vast domestic market, but also exported to the United States, Japan, European and South Korea, etc. XG is always putting the project of "customers satisfactory" and the quality policy of "manufacturing high quality steels, seeking customers�?satisfactory" into practice. The company passed the approval of ISO9002 quality system in 1999, and the approval of revised edition of ISO9001: 2000 in 2002.Steel plates for shipping have approved by BV, CCS, DNV, GL, NK, KR, LR, and RINA. Steel plates for boilers and pressure vessels have gained the national manufacturing license of industrial products.
Our company will take full advantage of the advanced equipment and products development, stick to the marketing doctrine of "Casting our brand by keeping faith and truth, creating value and wealth for the customers" and do our best to provide domestic and foreign clients with high quality products and excellent service. we can provide all kinds of heavy plate, steel pine and all kinds of other metal products.
Introduction of Products
Wire rod products include:
Cold heading steels, middle and high carbon steels, wires for welding, spring steels, bearing steels, alloy constructional steels, steels for drawing, free cutting steels, constructional steels, deformed steel bars, etc.
Bar products include:
carbon constructional steel, alloy constructional steel, free cutting steels, steels for moulds, Normal carbon round steels, bearing steel, billets for pipes, etc.
Heavy plates include:
Carbon structural steels, quality carbon structural steels, high strength low-alloy structural steels, structural steel for bridges, hot-rolled steel plates for plastic dies, structural steel for hull and offshore platform, steel plates for boilers, Steel plates for pressure vessels, structural steel for architecture, pipeline steels, high strength structural steel plates: products supplied in heat-treated or controlled rolled condition, wear-resistant steel plates.
Metal products include various sizes of wire ropes, wires, prestressed wires and wire strands, metal hose etc.
In addition, there are cerements, refractory materials, and coking byproducts, etc.
XG steel plate process basic situation is introduced
According to of the customer size and technical personalized requirement, hunan steel through the use of continuous casting billet and die casting two blank to organize container plate production.
Die casting with large compression ratio and single heavy advantage, can meet the special thick high-end varieties and ultra wide overweight specification plate production demand.
Continuous casting billet by using Mr Steel group advanced straight arc type multipoint bending multipoint straightening, dynamic light pressure, the two cold aerosol cooling, online adjustable width and other advanced continuous casting technology, successfully resolved large section continuous casting billet center segregation, porosity and crack defects, greatly improve the continuous casting billet rolled plate surface and internal quality.
XG steel container plate is introduced
XG steel pressure vessel with steel plate development present situation:
For years, XG steel with the country’s nuclear power, thermal power and water and electricity industry and related pressure vessel industry development, the second half of 2011 XG steel smoothly through national RongBiao after the expansion card, the XG steel pressure vessel steel has covered all gb steel grade and specification range.
high-end product development especially in extra thick plate, high strength quenched and tempered pressure vessel steel plate, the hydrogen steel, drum steel and other high-end container field, research and development production performance significantly. At present has developed into A series of 600 mpa level high strength quenched and tempered pressure vessel steel, 90 ~ 145 mm and mnnimo5-4; seven decades ~ 178 mm SA299Gr. A, 30 ~ 145 mm, the hydrogen steel and steel grade specifications.
XG steel container plate main features
1, variety specification complete, the maximum thickness can produce up to 350 mm to 4800 mm, width, thickness, width of steel plate, it can satisfy different customers for steel plate size of the personalized demand. In recent years, XG steel through the continuous optimization of process, development variety, improve quality, the container plate varieties has covered all national standard varieties of different specifications range, another 43 foreign brand products gain CE, PED the authentication.
2, steel purity, USES the hot metal pretreatment, LF + VD refining, mould level automatic control and dynamic soft reduction control and a series of advanced technology, to improve the slab inclusion level and cast billet segregation degree, ensure the components of uniform and the purity of steel, steel in [O] all acuities 20 PPM, N acuities 50 PPM, H acuities were 1.5 PPM, S acuities were 0.002%, P acuities were 0.015%.
3, through the control firm controlled rolling and controlled cooling (TMCP), normalizing, controlled rolling control cold + tempering (TMCP + T), such as technology, real now organization even, thickness direction of the grain degree difference control in grade 1 within.
4, Z to performance (anti lamellar tearing performance), generally in 55 to 70% of the control level, fully meet the needs of different users.
5, steel plate with narrow yield strength distribution interval, mainly in 50 ~ 80 mpa range fluctuations, is far superior to the requirements of the national standard, has good resistance to damage ability.
6, thickness of slab effect is small, with the increase of the thickness of the specification, and the yield strength no obvious drop, strength loss in 20 mpa the following, product stable performance.
7, steel plate internal quality, ultrasonic inspection level II above stable qualified rate of over 99%.
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XG steel pressure vessel varieties, specifications and delivery state
standards |
Grade of steel |
Specification (mm) |
Delivery state |
GB 713-2008 |
Q345R |
8-200 |
normalizing |
Q370R |
10-200 |
normalizing |
15CrMoR |
10-150 |
normalizing |
13MnNiMoR |
10-150 |
normalizing +tempering |
14Cr1MoR |
10-150 |
normalizing +tempering |
12Cr2Mo1R |
10-150 |
normalizing +tempering |
12Cr1MoVR |
10-150 |
normalizing +tempering |
GB3531-2008 |
09MnNiDR |
8-120 |
normalizing +tempering |
16MnDR |
8-120 |
normalizing |
Tempering pressure vessel steel |
07MnCrMoVR |
10-150 |
quenching and tempering |
07MnNiMoVDR |
10-150 |
quenching and tempering |
12MnNiVR |
10-150 |
quenching and tempering |
steam drum steel |
SA299Gr.A |
10-200 |
normalizing |
13MnNiMo5-4 |
10-150 |
normalizing +tempering |
CF steel development production
XG steel in extra thick high strength quenched and tempered pressure vessel with steel plate (CF steel) research and development production, research and development technology experience, has developed into a series of 600 mpa level high strength quenched and tempered pressure vessel steel, the biggest production thickness up to 150 mm, related technical level to reach the domestic advanced level, shock temperature 20oC, - from - 40 oC to 50 oC, can also meet with the spherical tank and water pressure of sheet metal manufacture, in 2011 the supply more than 5000 tons. The same class type, XG steel has successfully developed maximum thickness up to 150 mm 07 mnmovr steel plate.
150 mm 07 mnmovr (CF steel) mechanical properties
guanzhou hydropower station, 150 mm thick quenched and tempered pressure vessel steel plate mechanics performance
124~150mm 07MnMoVRExperimental performance analysis |
time |
steel plate number |
Grade of steel |
specifications |
remarks |
Technology |
Sampling position |
tensile |
Sampling position |
yield |
 /FONT> |
extend |
-20�? |
2011.11 |
1B15M131-1 |
07MnMoVR |
150 |
ingot rolled products |
Quenched and tempered |
Plate thickness1/4 |
771 |
840 |
18.1 |
200 |
177 |
177 |
1B15M131-2 |
150 |
ingot rolled products |
Quenched and tempered |
Plate thickness1/4 |
699 |
768.4 |
18.63 |
159 |
175 |
224 |
1B15M131-3 |
150 |
ingot rolled products |
Quenched and tempered |
Plate thickness1/4 |
600 |
686.2 |
22.4 |
213 |
296 |
251 |
1B15M141-1 |
124 |
ingot rolled products |
Quenched and tempered |
Plate thickness1/4 |
745 |
822.1 |
16.74 |
117 |
149 |
120 |
1B15M141-2 |
124 |
ingot rolled products |
Quenched and tempered |
Plate thickness1/4 |
703 |
768.5 |
16.72 |
169 |
183 |
182 |
1B15M141-3 |
124 |
ingot rolled products |
Quenched and tempered |
Plate thickness1/4 |
586 |
671.7 |
19.45 |
182 |
190 |
232 |
1B15M151-1 |
150 |
ingot rolled products |
Quenched and tempered |
Plate thickness1/4 |
657 |
760.2 |
17.62 |
139 |
98 |
54 |
1B15M151-2 |
150 |
ingot rolled products |
Quenched and tempered |
Plate thickness1/4 |
652 |
729.3 |
17.36 |
177 |
168 |
173 |
1B15M151-3 |
150 |
ingot rolled products |
Quenched and tempered |
Plate thickness1/4 |
575 |
665.8 |
22.75 |
220 |
198 |
196 |
guanzhou hydropower station 124, 150 mm thick, tempered pressure vessel steel Z to performance
steel plate number |
Grade of steel |
specifications |
Sampling position |
Z to stretch |
1B15M131 |
07MnMoVR |
150 |
Plate width 1/4 |
50 |
48 |
48 |
1B15M151 |
07MnMoVR |
150 |
Plate width 1/2 |
54 |
58 |
53 |
1B15M142 |
07MnMoVR |
124 |
Plate width 1/4 |
61 |
65 |
63 |
1B15M141 |
07MnMoVR |
124 |
Plate width 1/2 |
58 |
61 |
62 |
With the development of the oil tank steel
To oil tank with steel plate as the carrier, and northeastern university cooperation, through to the industrial production of various process control, will the lab study oxide metallurgy technology achievement, succeeded in industrialized production line technology transformation. In the industrial production line developed large heat input welding steel heat affected zone structure finer control technology, so as to improve large heat input welding steel of HAZ toughness, form with independent intellectual property rights of the large heat input welding steel industrialization technology, the acceleration of China’s large heat input welding steel of the localization process, strive for more than 200000 made large storage tank with high performance steel plate localization to provide technical support.
XG steel 12 mnnivr project performance
Lanzhou national oil reserve base 100000 stand storage tank engineering (2 a big tank)
For cargo: 1462 tons
Thickness specification: 12 ~ 32 mm
Delivery time: in 2010, 5 ~ 6 months
Zhoushan national oil reserve base 100000 stand storage tank engineering (2 a big tank)
For cargo: 1398 tons
Thickness specification: 12 ~ 32 mm
Delivery time: in 2010, 10 ~ 11 months
Zhoushan national oil reserve base 100000 stand storage tank engineering (6 a big tank)
For cargo: 4194 tons
Thickness specification: 12 ~ 32 mm
Delivery time: in 2011, 6 ~ 7 months
XG steel velocity hydrogen steel 146 mm 12 cr2mo1r (H) research
For a long time, petroleum, chemical industry, coal and other industries in the hydrogen equipment or container with steel plate for technology high quality requirements, the domestic enterprises for less, every year there are still most of the hydrogen steel plate in a foreign country Germany’s LinGen company, Japan’s kobe steel enterprises purchasing.
In order to meet the domestic hydrogen steel market demand, XG steel in the hydrogen production do a lot of work, from rolling way in the production of hydrogen equipment with thick plate necessary equipment, composition design and process of smelting, casting, rolling, heat treatment four process technology research, preliminary realized the hydrogen thick steel plate in XG steel batch production.
The hydrogen steel, evaluation thick steel plate embrittlement index J coefficient and vTr 54 + Δ 215 vTr 54 values are usually is indispensable, metal composition should also meet the requirements of the X factor.
The hydrogen production equipment with thick steel plate and the key technologies of main there are three points:
One is to control the steel P, S, Sn, Sb, As, etc impurity element content especially control P content and reasonable design of Si, Mn element such As target range;
The second is to realize and control of thick steel plate 1/2 thickness space requirements of the various performance;
Three is based on a set design composition, through the production process, the reasonable design and application, realize specific metallographic structure, in order to achieve required comprehensive mechanical properties, good welding performance and reliable performance.
The development of the steam drum steel production
With the rapid development of China’s economy, the rapid growth of the demand of electric power, boiler manufacturing enterprises are facing severe challenges. Boiler series products constantly to the large-scale development, XG kair hair extra thick and mnnimo5-4, SA299Gr., such as A drum steel plate, mainly used in the manufacture of 200 MW, 300 MW, 600 MW thermal power unit, such as high power of boiler drum, 13 mnnimo5-4, SA299Gr. A large boiler as core part --, drum material is widely used. Due to and has good oxidation resistance and 13 mnnimo5-4, SA299Gr. A hot strong sex, at present in the chemical container, oil refining equipment, hydrocracking unit and other high temperature processing equipment, application is very wide also.
Hunan steel other special thick pressure vessel steel physical performance situation
Brand and specification range |
Manufacturing number |
Yield strength ,MPa |
tensile strength ,MPa |
elongation,% |
Shock temperature oC |
impact,J |
P.S control,w% |
Q345R(200mm) |
GD10179 |
335~380 |
550~580 |
28~35 |
0 |
100~180 |
P less than or equal 0.020 |
S less than or equal 0.005 |
Q345R(127~144mm) |
GD10178 |
330~360 |
520~570 |
25~35 |
0 |
150~230 |
P less than or equal 0.020 |
C150004 |
S less than or equal 0.005 |
C150002 |
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09MnNiDR(120mm) |
C150009 |
320~350 |
460~520 |
35~42 |
-70 |
200~300 |
P less than or equal 0.020 |
S less than or equal 0.005 |
SA516Gr.70(85~112mm) |
GD10260 |
320~360 |
520~550 |
28~35 |
-20 |
80~180 |
P less than or equal 0.020 |
S less than or equal 0.005 |
15CrMoR(100~140mm) |
C250000 |
320~380 |
510~550 |
25~30 |
0 |
100~200 |
P less than or equal 0.020 |
XG steel Offshore platform steel is introduced
Hull and Marine platform plate work hard, the safety and reliability requirements strictly, long service life, maintenance difficulties, therefore the steel performance and metallurgical quality put forward high request. Steel to have enough strength, excellent toughness, have fatigue, resist lamellar tearing, corrosion resistance, good welding performance. Our country at present there is no special Marine platform steel standard, the platform steel is used mostly the United States Marine structure steel API standard, or by Marine steel, pressure vessel steel and transplantation, and to meet China’s maritime fixed (mobile) platform for the construction and classification of the requirement of the specifications. XG steel in extra thick Marine platform steel research and development production areas for the a lot of manpower and material resources to meet the demand of domestic offshore steel plate, unceasingly carries on the technology innovation research, has successfully developed a low carbon equivalent, the thickness of slab 1/2 performance steel plate, the big line energy welding platform steel plate, thickness of 230 mm and 350 mm E36 D36 extra thick Marine platform, such as steel varieties, to meet the field of deep sea Marine platform on the steel plate technology quality of the strict requirements, and promote domestic Marine platform with steel localization process.
XG steel with high strength structural steel plate is introduced
Along with the domestic industrial technology development, with the use of high strength structural steel more widely. At present 550 mpa, 600 mpa and 690 mpa level, such as high strength steel plate has been widely used in engineering machinery, coal machinery, Marine engineering, large fixing parts, etc. XG steel follow the pace of the market, widely used in the 550 ~ 690 mpa grade steel plate, which realized the industrialized mass stable production, the year supply capacity is 100000 tons, the products have successfully entered sany, zoomlion, north machine, zheng machine, Shanghai zhenhua port machinery industries leading enterprise. In the high-end product development, has successfully developed Q960 level of high strength steel plate, 30 ~ 120 mm E550, E690 steel plate, thickness of 120 mm S690QL1 steel plate. The products of good quality performance, some products have been register certification, CE certification.
XG steel boiler and pressure capacity with steel plate supply performance profile
Serial number |
Project name |
Supply type of steel |
Supply weight |
1 |
Hunan Heimifeng diversion penstock in Hydropower Station |
16MnR |
2141 tons |
2 |
The Liuzhou Chenglian Pingguo Aluminum,Phase III expansion project |
16MnR |
1215 tons |
3 |
Guizhou Laojiangdi hydropower project |
16MnR |
1000 tons |
4 |
Xinjiang eight steel expansion project |
16MnR |
800 tons |
6 |
Export Africa’s 3000 made spherical tank |
15MnNbR |
1868 tons |
16MnDR |
128 tons |
7 |
Dongfang Steam Turbine Co., the wind turbine structural components |
12Cr1MoVg |
500 tons |
8 |
Dalian Golden heavy |
13MnNiMoR |
1200 tons |
9 |
Oil in the Sultan LPG project ( 40000 cubic meters of natural gas storage tank three, 7000 cubic meters and 5500 cubic meters of fire water tank each one) |
16MnR |
1150 tons |
10 |
In the oil Sudan LPG project (1000 cubic meters of low-temperature LPG tank units) |
16MnDR |
200 tons |
11 |
Zhenhai refining tank project |
16MnDR |
300 tons |
12 |
Datang power generation Toronto coal to oil equipment |
16MnDR |
200 tons |
13 |
Sinopec Lanzhou Petrochemical oxygen tank, a nitrogen tank 1500 cubic meters , 2000 cubic meters a |
15MnNbR |
1000 tons |
14 |
Lanzhou Salt Company 1500 m3 oxygen tank |
15MnNbR |
400 tons |
15 |
Sinopec Shanghai gaoqiao chemical coking tower (and stainless steel compound) |
15CrMoR |
130 tons |
16 |
Dalian golden heavy |
15CrNoR |
1000 tons |
17 |
Yitai Coal Oil Project |
09MnNiDR |
1800 tons |
18 |
Bobo na hydropower station |
07MnCrMoVR |
863 tons |
19 |
Shenyang installation nitrogen tank |
07MnCrMoVR |
865 tons |
20 |
Handan emerging nitrogen tank |
07MnCrMoVR |
441 tons |
|
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07MnNiMoVDR |
147 tons |
21 |
Guizhou shuicheng steel oxygen tank |
07MnCrMoVR |
404 tons |
23 | ,
National strategic oil reserve base project (10 million cubic four crude oil storage tank) |
12MnNiVR |
2861 tons |
|