Minerals & Metals

SPECIFICATION MATERIAL: ISRI Code (27/29) R50 (51.67 Kg/Meter – GOST 7173-75) ISRI Code (27/29) R65 (64.72 Kg/Meter – GOST 8165-75) Composition: C: 0.54%- 0.82%, Si: 0.18%-0.40%, Mn: 0.60%-1.05%, S: 0.04% Max,P: 0.035% Max, As: 0.01% Max of Mass Share. Length: between 6-12 m (min.) to 12 meters (max) not exciding 12 meters COMPOSITION: METAL IMPURITIES TOTAL 1% (ONE PERCENT) OR LESS.All goods sold by the seller will be totally free of anytypes of radiation, bombs, arms and ammunition, mines,shells, cartridges, sealed containers, penguins, gas cylinders, explosive shells and/or explosive materials in and form, used or otherwise. contact us for more details.

Minimum Order: 50000

Thermal Shock Resistance low cement castable refractory material castable refractory cement low cement castable refractory material Low cement refractory castable made by CH Refractories with three levels, which are high aluminum low cement castable, mullite low cement castable and corundum low cement castable. The low cement fireproof castable is mainly used for cement kiln masonryespecially for kiln mouth, kiln door cover, cooler, tertiary air duct and coal injection pipe. Applications of Corundum Castable: Steel furnace, cement kiln, glass kiln, iron making furnace, ceramic tunnel kiln and so on. Item CH-GYJ85 CH-GYJ90 CH-GYJ93 AL2O3(%) 85 90 93 Sio2(%) 10 6 2 Bulk Density(g/cm3) 2.9 3.0 3.0 Cold Crushing Strength(Mpa) 110℃*24h 80 100 80 1100℃*3h 80 100 80 1500℃*3h 80 100 80 Cold Pressed Antisegregation Strength(Mpa) 110℃*24h 8 12 8 1100℃*3h 8 12 8 1500℃*3h 8 15 8 Hot after-line rate of change(%) 1100℃*3h -0.1~-0.3 -0.1~-0.3 +-0.2 Max Service temp(℃) 1650 -0.1~-0.5 -0.2~-0.6 +-0.5 Construction methods Vibration Vibration Vibration Reference water volume(%) 5~6 5.5~6.5 5.5~6.5

Permanent Magnets Sintered Neodymium Iron Boron(NdFeB) Magnets permanent magnet Sintered Neodymium Iron Boron(NdFeB) Magnet, Super Strong Rare Earth Permanent Magnet Features Super powerful magnetic properties, with the smallest size to get the highest magnetism; Max. Working temp.250℃; Reliable and stable machinability, processed as complex and precision finished parts; Reliable corrosion resistance, various coatings (nickel, zinc, epoxy, gold, silver, aluminum, parylene, Everlube, paint, phosphating, etc.) ensure corrosion resistance and product appearance;

Also known as wind steel or front steel, also known as white steel. It means that when quenched, it hardens even when cooled in air and is sharp. It is a complex alloy steel containing carbide-forming elements such as tungsten, molybdenum, chromium, vanadium, and cobalt. The total amount of alloying elements is about 10 to 25%. It can still maintain high hardness under high heat generated by high-speed cutting (about 500 ℃), and the HRC can be above 60. This is the most important characteristic of high-speed steel - red hardness. After quenching and low-temperature tempering, carbon tool steel has high hardness at room temperature, but when the temperature is higher than 200 °C, the hardness drops sharply, and the hardness at 500 °C has dropped to a similar level to the annealed state. , completely lost the ability to cut metal, which limits the use of carbon tool steel to make cutting tools. High- speed steel, due to its good red hardness, makes up for the fatal shortcomings of carbon tool steel and can be used to manufacture cutting tools. High-speed steel generally does not do tensile strength testing, but mainly metallographic and hardness testing. After the correct heat treatment of tungsten and molybdenum high-speed steel, the Rockwell hardness can reach above 63, and the cobalt high-speed steel is above 65. The acid leached low-magnification structure of the steel shall not have shrinkage cavities and skin turns visible to the naked eye. The center is loose, and the general looseness should be less than grade 1. The content of metallographic inspection mainly includes three items: decarburization layer, microstructure and carbide inhomogeneity. 1. High-speed steel should not have obvious decarburization. The microstructure must not have fishbone-like eutectic ledeburite. 2. Carbide inhomogeneity in high-speed steel has the greatest impact on quality, and the metallurgical and mechanical departments attach great importance to the level of carbide inhomogeneity. Different grades of carbide non-uniformity requirements can be put forward according to different uses of steel, and usually should be less than grade 3. 3. In addition to high hardness, high wear resistance and sufficient toughness, another important factor is the red hardness of high-speed steel for manufacturing cutting tools. (Red hardness refers to the ability of the cutting edge to resist softening under red heat when the tool is cutting at high speed.) One way to measure the red hardness is to first heat the steel to 580-650°C, keep the temperature for 1 hour, then cool it down, and measure its hardness after repeating this for 4 times. The quenching temperature of high-speed steel is generally close to the melting point of the steel. After quenching, it is generally necessary to temper 3 times between 540 and 560 °C. Increasing the quenching temperature can increase the red hardness of the steel. In order to improve the service life of high-speed steel tools, the surface can be strengthened, such as low-temperature cyanidation, nitriding, sulfur-nitrogen infiltration, etc. songshunmoldsteel41404340

Minimum Order: 1 bags

High-speed steel has good process performance, good strength and toughness, so it is mainly used to manufacture complex thin-edged and impact-resistant metal cutting tools, as well as high-temperature bearings and cold extrusion dies. In addition to the high-speed steel produced by the smelting method, powder metallurgy high-speed steel appeared after the 1960s, which has the advantage of avoiding the reduction of mechanical properties and heat treatment deformation caused by the segregation of carbides produced by the smelting method. The heat treatment process of high-speed steel is more complicated, and it must go through a series of processes such as quenching and tempering. Quenching is generally carried out in two stages due to its poor thermal conductivity. First preheat at 800 ~ 850 ℃ (to avoid causing large thermal stress), then quickly heat to the quenching temperature of 1190 ~ 1290 ℃ (the actual temperature of different brands is different), and then oil cooling or air cooling or gas cooling. The factories are all heated by salt furnaces, and vacuum furnaces are also widely used. After quenching, a part (about 30%) of retained austenite remains in the internal structure and is not transformed into martensite, which affects the performance of high-speed steel. In order to transform the retained austenite and further improve the hardness and wear resistance, it is generally necessary to carry out 2 to 3 tempering times, the tempering temperature is 560 ° C, and the temperature is kept for 1 hour each time. Production method: Usually electric furnace is used for production, and powder metallurgy method was used to produce high-speed steel, so that the carbides are evenly distributed on the substrate in the form of extremely fine particles, which improves the service life. Uses: used in the manufacture of various cutting tools. Such as turning tools, drills, hob, machine saw blades and molds with high requirements. We provide high-quality steel, ex-factory price, support customization, strong company and factory strength; welcome your inquiry and order；please contact us for quotes. MiKi Zhuo E-mail:jacklu@songshunsteel.com Skype/W , hatsapp/Wechat:+86-18269260283 ADD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China Company website: https://steelpurchase.com/ http://w , ww.songshunsteel.com/ songshunmoldsteel41404340 ,

Minimum Order: 1 bags

(1) 1.6511 Alloy Steel Rod Refers To The Corresponding Steel Number China GB steel number 40CrNiMoA, German DIN steel number 36CrNiMo4, German DIN material number 1.6511, French NF standard 40NCD3, Japanese JIS standard SNCM439, British BS standard 816M40, American AISI/ASTM4340, American UNS standard G43400. (2) 1.6511 Alloy Steel Rod Chemical Composition C:0.37-0.44 Si:0.17-0.37 S：≤0.035 P:≤0.035 Mn:0.50-0.80 Cr:0.60-0.90 Mo:0.15-0.25 N:1.25-1.65 (3) 1.6511 Alloy Steel Rod Surface Treatment Plate: Origin Black, Orign cold rolled bright, Machined, Grinded Bar:Origin Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded (4) Charateristics 4340 steel offers toughness and high strength inthe heat treated condition, with in roun , d bar 4340 is available fully certified and suitable for applicat , ions  requiring a quality tensile alloy steel.AISI 4340 is commonly supplied quenched and tempered with a hardness of between 24 to 29HRc (5) Contact us Feel free to contact us,we are glad to serve for you. Songshun Always Open the Door for You. MiKi Zhuo Skype/Whatsapp/Wechat:+86-18269260283 A , DD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China songshunmoldsteel41404340

Minimum Order: 1 bags

Description of 4340 chromoly steel:4340 alloy steel is an iron-based alloy containing nickel, chromium and molybdenum. The relatively high carbon content gives this alloy exceptional strength in applications where severe service conditions exist.4340 alloy steel has high strength, good toughness and good ductility. In addition, the alloy is not prone to embrittlement. 4340 steel application: It is used as important quenched and tempered parts that require good toughness, high strength and large size, such as heavy machinery and high-load shafts, turbine shafts with a diameter greater than 250mm, helicopter rotor shafts, turbojet engine turbine shafts, blades, high Loaded transmission parts, crankshaft fasteners. Gears, etc.; can also be used for rotor shafts and blades whose operating temperature exceeds 400 °C; can also be used to manufacture important parts with special performance requirements after nitriding treatment, and can be used for ultra-high temperature after low temperature tempering or austempering. Use of strength steel. 4340 Steel Features:It has high strength, toughness, excellent hardenability and stability against overheating, good plasticity and heat resistance, uniform material, high working reliability, weldability, non-leakage, and simple steel structure production. Short construction period and good assembly. 4140 steel processing technology: Heat treatment standard: quenching at 850℃, oil cooling; tempering at 560℃, water cooling, oil cooling; Metallographic structure: tempered sorbite Heat treatment: 1. Normalizing: Heat the furnace to 900°C~930°C, keep the thickest cross section per inch at this temperature for one hour, and cool in air. 2. Heat to austenitizing at a temperature of 860℃~885℃, and keep the thickest cross section per inch for one hour at this temperature 3. Normalizing or oil quenching, and cooling to a maximum temperature of 121°C 4. Temper at a temperature that achieves the following mechanical properties. The thickest cross-section per inch is held for one hour at the tempering temperature, and the tempering temperature range is 640 ° C ~ 680 ° C 5. For each heat treatment process, a heat treatment chart must be drawn. 6. The mechanical property test shall be carried out in accordance with the stipulations of ASTM. A-370. The sample material used for the test shall be cut from the test bar of the same furnace steel. The casting or forging represented by the sample and the test bar shall be in the same furnace. The test bar shall be heat treated in the same furnace together with the charge. 7. The mechanical properties should meet the following requirements: (Tested with a test bar, sampling according to APT 6A, 110K standard) - Tensile strength minimum lb/inch (862) Yield strength minimum lb/inch 110.000 (758) 2 inches The minimum value of elongation is 15% and the minimum value of section shrinkage rate is %40. Brinell hardness HB285 ~ take, the casting or forging represented by the sample and the test bar must be in the same furnace, and the test bar should be heat treated in the same furnace together with the charge. 8. The mechanical properties should meet the following requirements: (tested with test bars, sampling according to APT 6A, 110K standard) - minimum tensile strength lbs/inch (862) minimum yield strength lbs/inch (758) 2 inches Minimum elongation %15 Minimum shrinkage of section %40 Brinell hardness HB285~352 9. Marking: Each part shall be printed with heat treatment marks and hardness with low stress steel stamp. Company Overview Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc. After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter.songshunmoldsteel41404340 ,

Minimum Order: 1 bags

We can supply the products according to customer's drawings, samples and performance requirement.​ 1. Satisfy various technical request. 2. Best delivery time. 3. higher cost performance. 4. OEM, ODM and OBM are welcomed. We can supply the products according to customer's drawings, samples and performance requirement.​ 1. Satisfy various technical request. 2. Best delivery time. 3. higher cost performance. 4. OEM, ODM and OBM are welcomed.

Low alloy steel refers to alloy steel with less than 5% of total alloying elements. Low alloy steel is relative to carbon steel. On the basis of carbon steel, one or several alloying elements are intentionally added to the steel in order to improve the properties of the steel. When the amount of alloy added exceeds the general content of the normal production method of carbon steel, the steel is called alloy steel. When the total amount of alloy is less than 5%, it is called low alloy steel, ordinary alloy steel is generally less than 3.5%, alloy content between 5-10% is called medium alloy steel, and more than 10% is called high alloy steel. China's steel output has exceeded 600 million tons, the quantity of steel is no longer the main contradiction, and the contradiction of unreasonable steel varieties and structure is very prominent. The main task of the current industry is to strive to improve the market competitiveness of products, stand at a new starting point for sustainable development, and make vigorous development of low-alloy steel an important part of the development strategy. Many ordinary steel enterprises have realized that the production of low-alloy steel is the key to improving the technical content and added value of products in the adjustment of the steel variety structure and the preparation of scientific and technological development plans. The management cadres felt that "success is also low-alloy steel, and failure is also low-alloy steel", and they urgently demand a comprehensive understanding of low-alloy steel. The production situation of ordinary low alloy steel in my country can be summarized into the following points: 1. It is low carbon in terms of carbon content, and the carbon content is generally less than 0.20%; 2. In terms of alloys, primary steel and binary steel occupy a large proportion; 3. In terms of supply status, most of them are delivered in hot-rolled state; 4. Many steel grades add rare earth elements to improve the overall performance; 5. Most common low alloy steels are ferrite + pearlite type. Our company Dongguan Songshun Mould Steel Co., Ltd. specializes in the production of alloy steel for more than 10 years, mainly producing various alloy steel products, if you need more price, cooperation or quality information, please notify us jacklu@songshunsteel.com

Minimum Order: 1 bags

Dongguan Songshun Mould Steel Co., Ltd. is an Indusrtial and trading company with 2 warehouses that manufactures good & high quality kinds of steels starting from 2012. The company provides the customized products and OEM service. What´s more, we keep the mass stock of over 20000 tons. In those years, we offer a wide range of steels to our customers from all over the world. And we enjoy high praise among them. Quick Details Steel Grade:high speed tool steel Standard:AiSi, ASTM, bs, DIN, GB, JIS, AISI,ASTM,BS,DIN,JIS Place of Origin:Guangdong, China Brand Name:SONGSHUN Model Number:T1/1.3355/SKH2/W18Cr4V Technique:forged or hot rolled, Hold rolled,Cold Drawn Application:Tool Steel Bar, Die Steel Bar Alloy Or Not:Is Alloy Special Use:Mold Steel Type:Alloy Steel Bar, Alloy Steel Bar,Mold Steel Surface:black/oiled/bright Shape:round , /flat/plate Hardness of annealed:HBS≤240-300 Dimensions:10mm~800mm Certificate:SGS BV ISO Charateristics After electroslag remelting (ESR), H11 steel will have a fine uniform texture, good hardenability, excellent machining & polishing performance, high toughness & plasticity, good wear/heat/fatigue resistance in high and low temperature. Applications Typical H11 applications include die casting dies for aluminium, magnesium and zinc, extrusion dies for aluminium and brass, liners, mandrels, pressure pads, followers, bolsters, die cases, die holders and adaptor rings for copper and brass extrusion. Other applications include plastic moulds, shear blades for hot work and hot swaging dies. Also used to produce hot stamping and press forge dies, split hot heading dies, gripper dies, hot punching, piercing and trimming tools. WELCOME TO GET A QUOTE MiKi Zhuo E-mail:jacklu@songshunsteel.com Skype/W , hatsapp/Wechat:+86-18269260283 ADD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China Company website: https://steelpurchase.com/ http://w , ww.songshunsteel.com/ songshunmoldsteel41404340 ,

Minimum Order: 5 dozens

1. 4140 steel is an alloy structural steel with high strength, hardenability, good toughness and small deformation during quenching.It is used to manufacture forgings that require higher strength and larger quenched and tempered section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clips that are heavily loaded, and can also be used for Drill pipe joints and fishing tools for oil wells below 2000m. 2. 4140 Product Process Treatment Heat treatment process: Annealing annealing No.1 "760±10℃ annealing, furnace cooling to 400℃ air cooling. HB220-230 Normalize normalize No.4 860±10℃ normalizing, air-cooled. Quenching+tempering No.5 840±10℃ quenching water or oil (depending on the complexity of the product shape), tempering at 680-700 degrees. HB<217 Quenching+tempering No.6 quenching oil at 840±10℃, and then tempering at 470℃. HRC41-45 Quenching+tempering No.7 quenching oil at 840±10℃, and then tempering at 480℃. HRC35-45 Quenching+tempering No.8 Quenching oil at 850°C, and then tempering at 510°C. HRC38-42 Quenching+tempering No.9 quenching oil at 850℃, and then tempering at 500℃. HRC40-43 Quenching+tempering No.10 Quenching oil at 850℃, and then tempering at 510℃. HRC36-42 Quenching+tempering No.11 Quenching oil at 850℃, and then tempering at 560℃. HRC32-36 Quenching+tempering No.12 Oil quenching at 860°C, and then tempering at 390°C. HRC48-52 3. 4140 Product Information 1.Surface Treatment Plate: Origin Black, Orign cold rolled bright, Machined, Grinded Bar:  Origin Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded 2.Heat treatment specification Heat treatment standard: quenching at 850℃, oil cooling; tempering at 560℃, water cooling, oil cooling; 3.Available Size: Round bar: Diameter(mm) Max 800mm; Length(mm) Max 12000mm. Plate: Thickness(mm) Max 800mm; Width(mm) Max 2300mm; Length(mm) Max 12000mm. Condition: Cold rolled(drawn)≤50mm, Hot rolled≤12-250mm, Hot forged≥50mm. 4.AISI 4140/DIN 1.7225 Introduction: AISI 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. 5.Video Description https://steelpurchase.com/steel-video/ 4. We provide high-quality steel, ex-factory price, support customization, strong company and factory strength; welcome your inquiry and order；please contact us for quotes. MiKi Zhuo E-mail:jacklu@songshunsteel.com Skype/W , hatsapp/Wechat:+86-18269260283 ADD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China For more 4140 steel product information, please click this link: https://steelpurchase.com/4140-scm440-172 , 25-steel/ Company website: https://steelpurchase.com/ http://w , ww.songshunsteel.com/ songshunmoldsteel41404340 ,

Minimum Order: 3 bushels

What is high hardenability? It indicates that the ability of steel to obtain the depth of the hardened layer when quenched under certain conditions is mainly affected by the carbon content and alloying elements in the austenite. It indicates that the ability of steel to obtain the depth of the hardened layer when quenched under certain conditions is mainly affected by the carbon content and alloying elements in the austenite. Hardenability: refers to the characteristics that determine the hardening depth and hardness distribution of steel under specified conditions. The hardenability of steel is good or bad, which is usually expressed by the depth of the hardened layer. The greater the depth of the hardened layer, the better the hardenability of the steel. Namely high hardenability!! The hardenability of steel mainly depends on its chemical composition, especially the alloying elements and grain size that increase the hardenability, heating temperature and holding time and other factors. The steel with good hardenability can obtain uniform mechanical properties of the entire section of the steel, and a quenching agent with a small quenching stress of the steel can be selected to reduce deformation and cracking. songshunmoldsteel41404340

Minimum Order: 1 bags

Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc. After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter. Combined with experienced exporting team and professional technical knowledge, Songshun Steel offers both technical advice and support, as well as global professional steel solution and service. Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on. We offer a wide range of information and high quality steel products on 4140 and 4340 steel, for more information on our 4140 and 4340 steel products, please contact us today. To discuss pricing details, please request a quote. MiKi Zhuo E-mail:jacklu@songshunsteel.com Skype/W , hatsapp/Wechat:+86-18269260283 ADD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China For more 4140 steel product information, please click this link: https://steelpurchase.com/4140-scm440-172 , 25-steel/ songshunmoldsteel41404340

Minimum Order: 2 barrels

With the development of science, technology and industry, higher requirements are put forward for materials, such as higher strength, resistance to high temperature, high pressure, low temperature, corrosion resistance, wear and other special physical and chemical properties. To meet the requirements, alloy steel plates appeared. 1.Alloy Steel Plate Performance Issues With the development of science, technology and industry, higher requirements are put forward for materials, such as higher strength, resistance to high temperature, high pressure, low temperature, corrosion resistance, wear and other special physical and chemical properties. fulfil requirements. The performance of carbon steel mainly has the following shortcomings: (1) Low hardenability Under normal circumstances, the maximum hardenable diameter of carbon steel water quenching is only 10mm-20mm. (2) The strength and yield strength are relatively low. For example, the σs of ordinary carbon steel Q235 steel is 235MPa, while the σs of low alloy structural steel 16Mn is more than 360MPa. The σs/σb of 40 steel is only 0.43, which is much lower than that of alloy steel. (3) Poor tempering stability Due to the poor tempering stability, when carbon steel is quenched and tempered, a lower tempering temperature is required to ensure higher strength, so that the toughness of the steel is low; in order to ensure better Toughness, and the strength is low when the high tempering temperature is used, so the comprehensive mechanical properties of carbon steel are not high. (4) Can not meet the requirements of special properties Carbon steel is often poor in terms of oxidation resistance, corrosion resistance, heat resistance, low temperature resistance, wear resistance and special electromagnetic properties, and cannot meet the needs of special performance properties. 2.The difference between carbon steel and alloy steel plate The performance of carbon steel mainly has the following shortcomings: (1) Low hardenability In general, the maximum hardening diameter of carbon steel water quenching is only 10mm-20mm. (2) The strength and yield strength are relatively low. For example, the σs of ordinary carbon steel Q235 steel is 235MPa, while the σs of low alloy structural steel 16Mn is more than 360MPa. The σs/σb of 40 steel is only 0.43, which is much lower than that of alloy steel. (3) Poor tempering stability Due to the poor tempering stability, when carbon steel is quenched and tempered, a lower tempering temperature is required to ensure higher strength, so that the toughness of the steel is low; in order to ensure better Toughness, and the strength is low when the high tempering temperature is used, so the comprehensive mechanical properties of carbon steel are not high. (4) Can not meet the requirements of special properties Carbon steel is often poor in terms of oxidation resistance, corrosion resistance, heat resistance, low temperature resistance, wear resistance and special electromagnetic properties, and cannot meet the needs of special performance properties. 3.Our Company Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc. After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter. Combined with experienced exporting team and professional technical knowledge, Songshun Steel offers both technical advice and support, as well as global professional steel solution and service. Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on. 4.Contact Us MiKi Zhuo E-mail:jacklu@songshunsteel.com Skype/W , hatsapp/Wechat:+86-18269260283 ADD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China Company website: https://steelpurchase.com/ http://w , ww.songshunsteel.com/ songshunmoldsteel41404340 ,

Minimum Order: 1 bags