Companhia Siderúrgica Nacional engages in the production of steel in Brazil and internationally. Segments The company divides its business into five segments: Steel, Mining, Cement, Logistics and Energy. Steel This segment produces carbon steel. Flat Steel: The company’s Presidente Vargas Steelworks produces flat steel products — slabs, hot-rolled, cold-rolled, galvanized and tin mill products. Slabs: Slabs are semi-finished products used for processing hot-rolled, cold-rolled or coated coils and sheet products. The company produces cast slabs with a standard thickness of 250 millimeters, widths ranging from 830 to 1,600 millimeters and lengths ranging from 5,250 to 10,500 millimeters. The company produces high, medium and low carbon slabs, as well as micro-alloyed, ultra-low-carbon and interstitial free slabs. The slabs are then slitted and finished, generating blooms, which are delivered to the long products plant. Hot-Rolled Products: Hot-rolled products include heavy and light-gauge hot-rolled coils and sheets. The company provides coils of heavy gauge hot-rolled sheet having a maximum thickness of 12.70 millimeters used to manufacture automobile parts, pipes, structural beams and other construction products. It produces light gauge hot-rolled coils and sheets with a minimum thickness of 1.20 millimeters, which are used for welded pipe and tubing, automobile parts, gas containers, compressor bodies and light cold-formed shapes, channels and profiles for the construction industry. Cold-Rolled Products: Cold-rolled products include cold-rolled coils and sheets. The company supplies cold-rolled coils in thicknesses of between 0.30 millimeters and 2.99 millimeters. Galvanized Products: The company uses the hot-dip process. Galvanized products are used to manufacture a range of products, such as automobiles, trucks and bus bodies; manufactured products for the construction industry, such as panels for roofing and siding, dry wall and roofing support frames, doors, windows, fences and light structural components; air ducts and parts for hot air, ventilation and cooling systems; culverts, garbage containers and other receptacles; storage tanks, grain bins and agricultural equipment; panels and sign panels; and pre-painted parts. The company produces galvanized sheets and coils in continuous hot-dip processing lines, with thickness ranging from 0.30 millimeters to 3.00 millimeters. It produces Galvanew, in addition to the standard galvanized products. The company produces Galvalume, a continuous Al-Zn coated material at one of its branches, CSN Paraná. Galvalume is primarily used in outdoor construction applications that may be exposed to severe acid corrosion, like marine uses. Through its branch CSN Paraná, the company also produces pre-painted flat steel, which is manufactured in a continuous painting line. In this production line, a layer of resin-based paint in a choice of colors is deposited over either cold-rolled or galvanized base materials. Pre-painted material is a higher value-added product used primarily in the construction and home appliance markets. Tin Mill Products: Tin mill products consist of flat-rolled low-carbon steel coils or sheets with, as defined by Brazilian standards, a maximum thickness of 0.45 millimeters, coated or uncoated. There are four types of tin mill products, all produced by it in coil and sheet forms: tin plate - coated on one or both sides with a thin metallic tin layer plus a chromium oxide layer, covered with a protective oil film; tin free steel - coated on both sides with a very thin metallic chromium layer plus a chromium oxide layer, covered with a protective oil film; low tin coated steel - coated on both sides with a thin metallic tin layer plus a thicker chromium oxide layer, covered with a protective oil film; and black plate - uncoated product used as the starting material for the coated tin mill products. Tin mill products are primarily used to make cans and other containers. Suppliers The company’s suppliers include Açominas, CSA, Walters Energy, Rio Tinto Coal, Alpha Resources, Carbo One Limited, Teck Coal, CI Milpa, ThyssenKru
cia siderurgica nacional sa
Avenida Brigadeiro Faria Lima, 3400
20th, 19th and 15th - part Floors
São Paulo, SP 04538-132
Phone: 55 11 3049 7100
Fax: 55 11 3049 7150www.csn.com.br
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