TMT Bars

Best Quality TMT Bars | Adukia Industries

Adukia Industries is a leading manufacturer of advanced iron and steel products, committed to providing innovative solutions for the construction industry. Our UltraMax 550D TMT bars are designed to offer outstanding durability, strength, and flexibility to meet the demands of modern construction projects. Engineered using cutting-edge technology, these UltraMax TMT bars serve as the backbone for buildings, industrial sheds, transmission towers, dams, and roads, among others. Utilising advanced German Technology (Thermax technology), we produce TMT bars of Fe 550 grade, with a size range of 8mm to 32mm.


Strength: Ultramax Fe 550D TMT bars are designed to provide exceptional strength and elongation compared to traditional bars, resulting in safer and stronger concrete structures while using less steel. These bars are highly elastic and pliable and offer excellent welding capabilities. With their low carbon content, our TMT bars are incredibly durable, resistant to bending and rebending, and have superior welding capabilities with minimal overlap. These bars provide reliable and robust solutions.

Earthquake Resistance: Ultramax Fe 550D TMT bars at Adukia Industries boast enhanced strength, elongation, and ductility, making them ideal for earthquake-resistant construction projects.

Heat Resistance: Ultramax Fe 550D TMT bars exhibit exceptional strength retention during testing at temperatures up to 500°C, and only a marginal decrease in yield strength is observed in the range of 550°C to 600°C.

Corrosion Resistance: Ultramax Fe 550D TMT bars utilize advanced German technology, featuring a fine layer of scales that acts as a protective barrier, ensuring exceptional corrosion resistance and durability.


Process Flowchart for Rolling Mill | AIC TMT Bars In West Bengal


Chemical Composition:

INGREDIENTS BIS Ultramax FE 550D Ultramax FE 550D Low Alloy Steel
Carbon Max (%) 0.25 0.2 0.14
Manganese (%) 0.5 to 0.80 0.5 to 0.80 0.50. to 0.90
INGREDIENTS BIS Ultramax FE 550D Ultramax FE 550D Low Alloy Steel
Sulphur (%) 0.04 0.03 0.035
Phosphorus (%) 0.04 0.035 0.035
Carbon Equivalent 0.27 to 0.42 0.30 to 0.35

Mechanical Properties:

Grade YIELD(min N/sqmm) UTS (min N/sqmm) UTS (min N/sqmm)
Fe-500D 500 530 565 630 14.5 20
FE-550D 550 570 550 630 14.5 20
Ultramax FE 550D Low Alloy Steel 550 560 600 620 14.5 22