The steel rebar market is estimated to be USD 212.9 billion in and is projected to reach USD 268.4 billion in , at a CAGR of 4.0% from . The demand for rebar results from a surge in global infrastructure spending, expanding cities, and increased investments in housing, commercial, and industrial construction. As economic growth in developing countries drives the modernization of transportation, the development of smart cities, and the expansion of energy and water infrastructure, there is a rising need for reinforced concrete structures where steel rebar is crucial for enhancing tensile strength and overall structural integrity. The population explosion, especially in Asia Pacific and Africa, also boosts demand for affordable housing and public facilities, which in turn requires large volumes of steel reinforcement. To increase rebar consumption, governments prioritize building strong infrastructure such as highways, bridges, ports, and railways. There is a growing preference for high-strength, corrosion-resistant rebars in seismic and coastal areas due to their durability and compliance with evolving safety codes. Additionally, the increased demand for green construction practices, eco-friendly materials, and advanced reinforcement options has driven the production of innovative rebars like TMT rebar and epoxy-coated rebar. Rising private sector investments, industrialization, and reconstruction efforts in post-war or disaster-affected regions further accelerate market growth. Collectively, these factors are propelling steel rebar demand in both developed and developing regions.
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The demand for steel rebar is mainly met by global players. Some of the leading companies involved in the steel rebar market are Nippon Steel Corporation (Japan), ArcelorMittal (Luxemberg), Gerdau S/A (Brazil), Nucor Corporation (US), Commercial Metals Company (US), TATA Steel (India), Steel Authority of India Limited (India), Mechel PAO (Russia), Steel Dynamics, Inc. (US), NLMK Group (Russia), JSW (India), and Baosteel Group Co., Ltd. (China). These companies, amongst many other regional players, fulfill the requirements globally for steel rebar.
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Nippon Steel Corporation (Japan):
Formed in through the merger of the former Nippon Steel Corporation and Sumitomo Metal Industries Ltd., Nippon Steel Corporation operates across multiple business segments. Its steelmaking and steel fabrication division is involved in the production and distribution of steel sheets, plates, bars, wire rods, pipes, tubes, and machinery parts. The engineering and construction segment focuses on developing steel plants, heat management systems, and industrial machinery and equipment. Within its chemicals division, the company produces a range of chemical products, carbon materials, and epoxy resins. The new materials segment handles the manufacturing and trading of semiconductors, stainless steel foils, silicon carbide wafers, carbon fibers, and metal substrates used in catalytic converters. Additionally, the system solutions segment offers comprehensive IT infrastructure services. Nippon Steel Corporation operates across North America, Europe, Asia Pacific, the Middle East & Africa, and South America.
ArcelorMittal (Luxembourg):
ArcelorMittal was established in through the merger of Arcelor and Mittal Steel. Leveraging a diverse and skilled workforce, the company produces a wide array of high-quality finished and semi-finished steel products. With manufacturing facilities in 16 countries, ArcelorMittal serves customers across 155 countries worldwide, catering to a broad range of end-use industries including automotive, construction, appliances, energy, transport, and machinery. Its product portfolio includes blooms, rebar, billets, wire rods, sections, sheet piles, rails, drawn wires, and both seamless and welded tubular products. The company also offers a comprehensive range of standard and specialty rebar designed for use in reinforced concrete structures across various applications. ArcelorMittal holds the position of the leading steel producer in North America, South America, and Europe.
Gerdau S.A. (Brazil):
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Gerdau S.A. is a leading Brazilian steel producer engaged in the production and commercialization of a wide range of steel products. The company operates through four main segments. The Brazil Operation includes products such as rebar, bars, shapes, drawn products, billets, blooms, slabs, wire rods, structural shapes, and iron ore. In North America, Gerdau manufactures rebar, bars, wire rods, and both light and heavy structural shapes. Its South Africa Operation focuses on rebar, bars, and drawn products, while the Special Steels Operation offers stainless steel, as well as round, square, and flat bars, and wire rods. As Brazil’s largest steel producer and one of the most prominent suppliers of long steel in the Americas, Gerdau is also the largest recycler in Latin America, transforming around 11 million tonnes of scrap into steel products each year. Operating in 10 countries and employing over 28,000 people, Gerdau continues to emphasize innovation, sustainability, and a strong commitment to supporting the industries that build the future.
Market Ranking
The steel rebar market is moderately fragmented, with the top five players, Nippon Steel Corporation (Japan), ArcelorMittal (Luxembourg), Nucor Corporation (US), TATA Steel (India), and NLMK Group (Russia), collectively accounting for approximately 15–22% of the total market share. These companies sustain strong global positions through diverse steel portfolios, vertically integrated operations, and a focus on high-strength and corrosion-resistant rebar products. Despite their leadership, a significant portion of the market remains spread across numerous regional producers and mid-sized mills, especially in Asia, Eastern Europe, and Latin America. This distribution sustains market fragmentation and increases price competition. The competitive landscape allows regional players to specialize in custom-grade rebars designed for specific seismic, climatic, or regulatory requirements. Rising urbanization, infrastructure upgrades, and housing projects in developing countries are fueling demand for reinforced concrete, intensifying competition. Moreover, market dynamics are shifting due to advances in green steel production, increasing emphasis on circular supply chains, and government mandates for sustainable construction materials. This fragmented yet opportunity-rich market continues to attract both established companies and new local manufacturers seeking to serve niche markets and regional demands.
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Rebar fabrication refers to the process used in reinforced concrete (RC) construction to strengthen concrete in building frames. Rebars are available in 12 different thicknesses (D10 to D51) and are made from rolled steel with surface ribs.
Reinforcing steel bars are used in buildings, with specifications varying by location. The construction process involves assembling steel bars in foundations, columns, beams, walls, and floors. Columns feature vertical and horizontal bars with hoop wrapping, while floors use main bars and reinforcement bars. Bar intersections are secured with wires.
Rebar fabrication mainly uses deformed steel bars. It involves cutting bars to specific lengths and bends, using rebar cutters or automatic cutting machines. Bending is done with automatic machines or onsite using an electric tool with a rebar bender. The main bending shapes are "R bending" and "spiral bending."
Rebar names vary by use, including under bars in foundations, column bars, beam bars, wall bars, and slab bars in floors.
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