Kamdhenu TMT Steel

Kamdhenu TMT Steel Rebars are premium, high-strength Thermo-Mechanically Treated (TMT) steel reinforcement bars manufactured by Kamdhenu Limited. Widely recognized across the Indian construction sector, Kamdhenu TMT bars are produced using advanced automated rolling technologies and rapid temperature-controlled water-quenching systems.

Through this specialized manufacturing process, each rebar develops a tempered, high-strength martensitic outer surface surrounding a soft, ductile ferritic-pearlitic inner core. This metallurgical composition provides the strength, flexibility, and fatigue resistance required to handle dynamic structural loads, heavy construction demands, and seismic activity. Kamdhenu TMT steel complies strictly with the Bureau of Indian Standards IS 1786:2008 (Grades Fe 500, Fe 500D, Fe 550D, and PAS 10000 / Nxt).

Key Features & Benefits

• Advanced Double-Rib Pattern (Kamdhenu Nxt Technology): Features a specialized double-angle rib design created via CNC notch-cutting machines. This pattern delivers up to greater concrete interlock compared to standard rebar, preventing slippage and hairline tension cracks under heavy loads.
• Superior Ductility & High Elongation ('D' Grades): High uniform elongation values allow the steel to bend, deform, and absorb energy without sudden brittle fractures, making it suitable for earthquake-prone zones (Seismic Zones III, IV, and V).
• Enhanced Corrosion Resistance: Controlled low-carbon chemistry combined with micro-alloying provides strong resistance to rust formation, moisture penetration, and acidic groundwater salts.
• Thermal & Fire Stability: Retains high structural load capacity and proof stress at elevated temperatures, providing critical containment time during fire emergencies.
• Low Carbon Composition & High Weldability: Carbon content is kept well within specified limits, ensuring seamless electric arc and lap welding on site without requiring pre-heating or post-weld thermal treatment.
• Consistent Sectional Weight Tolerance: Uniform cross-sectional rolling guarantees exact linear meterage per bundle according to standard ISI weight norms, eliminating excess steel mass.

Primary Applications

• Residential Construction: Individual houses, villas, multi-story apartment foundations, roof slabs, plinth beams, and columns.
• Commercial Towers: High-rise office buildings, shopping complexes, shear walls, and heavily loaded transfer slabs.
• Civil Infrastructure: Bridges, highway flyovers, metro corridors, culverts, and underpasses.
• Industrial Facilities: Factory shed foundations, heavy machinery bases, industrial flooring, and crane gantry supports.
• Water Retaining Structures: Underground sumps, overhead water reservoirs, retaining walls, and drainage channels.

Standard Diameter Sizes & Structural Mapping

Kamdhenu TMT bars are supplied in standard 12-meter lengths across a full range of construction diameters: