12mm Steel Rebar Suppliers | High-Strength Rebar for Construction

12mm steel rebar suppliers focus on medium diameter reinforcing bars widely used in residential, commercial, and light industrial construction for their balance of strength, workability, and cost effectiveness. These rebars, with a nominal diameter of 12mm (≈0.47 inches), are typically produced from carbon steel grades like ASTM A615 Grade 40 (yield strength 276 MPa) or HRB 400 (yield strength 400 MPa), offering sufficient tensile strength for moderate load applications. The manufacturing process involves cold rolling or hot rolling, with rib patterns designed to improve concrete adhesion—standard ribs in accordance with ISO 15630 1 ensure a minimum bond strength of 1.5 times the concrete tensile strength. Suppliers must conduct rigorous testing, including ultrasonic testing for internal defects, surface hardness tests, and certification of elongation at break (≥16% for ductile grades) to meet international quality standards. 12mm rebars are commonly used in residential floor slabs, wall reinforcements, staircases, and commercial building partitions, where their manageable size allows for easy handling, bending, and tying with wire ties. Suppliers often offer value added services such as pre cutting to project lengths, bending into L shaped or U shaped configurations for corner reinforcements, and galvanization or epoxy coating to enhance corrosion resistance in humid environments. Inventory management is key, as 12mm rebars are high volume products requiring consistent availability to meet the demands of ongoing construction projects. International suppliers must navigate diverse regional standards—for example, complying with EN 10080 (European rebars) which specifies chemical composition limits for weldability, or AS/NZS 4671 (Australian/New Zealand standards) which mandates stricter tolerance for rib spacing. Their technical support includes assisting architects in designing reinforced concrete elements, calculating rebar coverage ratios, and advising on best practices for concrete curing to maximize composite structural performance.