Currently, wear-resistant steel under 6 mm is mainly used in lightweight dumper carriage as the thinnest available specification is 3 mm. lts shape and bending property are both in the domestic top level (the only cargo carriage that side wall and bottom plate are made of 3mm wear-resistant steel). The advantage of wear. resistant dump truck compared with traditional one lies in: 1. light weight and reduced energy consumption 50% and 33% weight loss compared with grade of 345 MPa and 700MPa respectively; 2. compared with the original material, it has better wear resistance (3.5 times higher), longer service time and less maintenance; 3, the anti-smashing performance of carriage is improved under different working conditions.

High manganese austenitic steel such as Mn13 and X120Mn12, Mn12 have good toughness and remarkable surface work hardening properties. Under strong impact load or extrusion load, the stressed surface is work hardened, and the surface hardness can be significantly increased from the initial HB200 to over HB750, while the core of steel plate still maintains good impact toughness. lt is widely used in mining equipment, machinery manufacturing industry, such as shot blasting equipment, large-scale jaw crusher, etc.

Lianyuan lron & Steel Co, Ltd has produced the protective steel of FD family with tensile strength 900MPa-2000MPa and of ArmaPro family with brinell hardness 440-630. With perfect bulletproof performance, cold forming and welding property, Armor plate of Lianyuan steel can be widely used in some fields, such as private bul. letproof vehicles, bank armored vehicles, armored personnel carriers, training range and anti-terrorist vehicles. Hot rolled LG900FD of Lianyuan Steel successfully passed the authentication of the Ministry of Public Security, which began to be used in armored cash carriers; Heat-treated armor plate of ArmaPro500 and 550 have successfully passed the inspection of China Academy of Ordnance Equipment and met the test requirements of NATO.

The medium and high carbon steel (0.20-1.2%C) covers complete range of specifications with high toughness, hardenability and wear-resistance, which are widely used in saw blade (such as stone, metallurgy and woodworking, etc), automotive parts (such as disk spring, safety buckle, seat, gear, etc.), cutter, tool and high strength straps etc. Strip thickness covers from 1.5mm to 20mm and width ranges from 980mm to 2050mm.

Engineering machinery steel of LY Steel has high strength, good forming property, excellent surface quality. high thickness accuracy and good weldability with yield strength of 460~1400MPa and thickness of 2.0~25.4mm, which is widely used in machinery, coal, transportation and mining and all kinds of engineering construction and other reguired equipment, such as driling machine, electric furnace, electric wheel dump, excavator, loader bulldozer, hydraulic aerial cage, all kinds of lifting equipment and coal mine hydraulic support and other mechan. ical equipment.

Auto beam steel family is mainly used in stringer and transverse beam of automobile, and is the ealiest de. veloped product in LY Steel. Presently, over one milion tons have been put into market, of which LG510l and LG610L awarded national metallurgy product quality certificate gold prize and LG510L awarded metallurgic industry quality excellent product prize. The product has good cold machining and formability. it can meet many machining requirements such as cutting, slitting, stamping, bending, roll pressing and welding. Delivery standard refers to Q/OHAC 809 Sheet and Strip for Automotive Beam.

lt mainly includes acid resistance and weather resistance families. it develops a big data chain on the basis of design-test-service process that drive the development and engineering application of high-quality corrosion. resistant steel by massive data. The sub-application industries include: environmental protection industry. tobacco industry, railway vehicles, containers, photovoltaic industry, green building, ocean engineering, bridge engineering, etc.

The series of product is comprised of B, X42, X46,X52,X56 X60, X65, X70, X80, X90 by strength; it can be grouped into lon- gitudinal submerged arc welding(LSAW), electric resistance weld pipe (ERW), spiral submerged arc welding (SSAW) pipe by welding process; it can be divided into oil transportation pipeline, natural gas pipeline, pipeline steel for acid environment and o- cean environment by medium and environment. Except the oil and natural gas industry application, this kind of pipeline can be widely used in pressure-bearing transportation such as water trans- portation, chemical material and mineral slurry.

Bridge steel has high strength, toughness, and can withstand the loads and impacts of locomotives and vehicles. It has good fatigue resistance, certain low-temperature toughness, and atmospheric corrosion resistance. The surface quality of steel is required to be high; The company can provide Q345~Q460 strength grade bridge and weather resistant bridge steel, which can be supplied according to national standards, industry standards, Japanese standards, American standards, European standards or technical agreements.

Every city has its own landmark brand and pride, The "Shuangling" created in Loudi, central HunanProvince, is such a brand, inheriting the culture and characteristics of the city, highlighting the growth andpride of the city, witnessing the changes of history, containing the essence of heaven and earth, entering thehome of one people after another, and stiffening the backbone of one nation after another. For exampleWuhan-Guangzhou high-speed railway,Shanghai-Kunming high-speed railway, Xiangxi Aizhai BridgeYangtze Gezhouba water Conservancy Project ( LY Steel products are applied to the main structure of thedam) , Yangtze Three Gorges water Conservancy project, Guangzhou Metro project , Guangzhou East RailwayStation Square, Shenzhen international Trade Building, Yellow River Xiao langdi water conservancy project.Capital international Airport , etc.

Non-oriented electrical steel products of LY Steel have advantages of multi-state (hot coil, pickledcoil, cold hardening coil, finished products), excellent magnetic properties with fine surface quality.delivery in time and so on, and are widelyused in thefields ofcompressor,small,medium and micro motor. high efficiencymotor,etc.

LY Steel can produce steel for pressure vessels mainly for welding gas cylinders, medium and normal tem perature pressure vessels and low temperature pressure vessels.

The application of cold rolled ultra low carbon and lFsteel are mainly for CQ, DQ, DDQ, EDDQ and SEDDQ. Thecold rolled ultra low carbon and iF steel for drawingproduced byLYSteel with good drawing property,weldability and coating performance are widely used incomplex and high quality automotive parts manufacturing.such as external and internal covering parts

The cold rolled enameling steel can be grouped into common use and deep drawing、 high strengthdrawing according to its application. The enameling steel produced in LY Steel has good drawabilityweldability and enameling capability, and has been widely used in enamel manufacturing field likeconstruction decorative material, heater linner and oven.

Cold rolled weathering steel of LY Steel includes ordinary atmospheric corrosion resistant steel and acidresistant environmental corrosion, By adding corrosion resistant elements such as Cu,Cr and Sb, it hasexcellent corrosion resistance and its service life in outdoor service environment is 2-4 times higher than thatof common low-carbon steel. lt is suitable for desulfurization and denitrification heat exchanger, outdoorsteel structure, building decoration.

LYS’s cold-rolled steel for welded tube has two varieties (ultra-low carbon steel and low carbon steel). ithas stable chemistry, good drawing property and thickness accuracy, which can be used for single and doublelayer welded tubes and widely applied to condenser pipe of refrigerator and oil tube of automobiles.

Cold-rolled medium and high carbon steel in LY Steel has good surface quality, stamping performance and hardenability, which has been widely used in auto parts, saw, knife. tool. chain.

The hot galvanized product is 0.3-2.5mm in thickness, 900-1580mm in width; the weight of zinc layer for twofaces is 60g/m?-300g/m?, with pure zinc coating, which can be supplied with equal thickness or different thickness zinc layer; Conventional product 's surface are finished without zinc spangle; the surface treatment methodare: oiling, chromic acid passivation, Trivalent chromium passivation, non-chrome passivation, chromate-freeanti-fingerprinting.

The steel that can be used to produce pressure vessels mainly includes steel for welding gas cylinders, steel for medium and normal temperature pressure vessels, and steel for low-temperature pressure vessels.

Hydropower steel of LY Steel is applied in low and medium pressure, low and medium temperature pressure vessels. Q460CF-Q800CF low welding crack sensitive high-strength steel for hydropower station developed by LY Steel can be used for -40~ 100'℃ pressure vessels, hydropower pressure steel pipes and other equipment and structural parts. With high steel cleanliness, low welding crack sensitivity (Pcm value), low carbon equivalent and excellent welding properties, it meetsthe technical requirements of important components such as volute, pressure steel pipe andmagnetic yoke ring in hydropower projects, and has the ability to supply large hydropowerstations and pumped storage power stations, which is the high-quality steel of LY Steel contributingto the transformation of global energy structure!

LY Steel has been producing shipbuilding and marine steel since 2010, and has qualificationcertificates of five classification societies like CCS, ABS, LR, BV and DNv, it has good mechanicalproperties, weldability, low internal stress and dimensional accuracy.

Good mechanical property,weldability,toughness and elongation,which is widely used.