TMT Bars

TMT Bars Manufacturers in Kolkata | Adukia

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 stronger, more flexible, and require less steel for safer concrete structures. These bars exhibit excellent elasticity, ductility, and welding capabilities. Thanks to their low carbon content, our TMT bars are incredibly robust and can withstand bending and rebending, providing superior welding capabilities with minimal overlap.

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:

Grade %C, max %S, max %P, max (%S + %P), max %CE, max
Fe-500 D 0.25 0.04 0.04 0.075 0.05
Fe-550 D 0.20 0.04 0.035 0.075 0.061

Mechanical Properties:

Grade YIELD(min N/sqmm) UTS(min N/sqmm) ELONGATION(min %)
Fe-500 D 500 530 565 630 14.5 20
Fe-550 D 550 570 550 630 660 20