The Assam Tubes Ltd was established with a singular vision: to bring world-class structural steel manufacturing to Northeast India. Located in Amingaon, Guwahati — 781031, our factory has grown from humble beginnings into the region’s most trusted steel manufacturer.
Over 50 years, we have witnessed the transformation of Northeast India’s infrastructure landscape — and played a central role in it. From bridges to buildings, from industrial structures to residential complexes, our steel has borne the weight of progress.
Our values are simple: quality without compromise, integrity in every interaction, and a relentless drive toward excellence. These values gave birth to our Duro Z brand, and they continue to guide every decision we make.
Certified
Three foundational pillars that define how we operate, what we produce, and why our customers trust us generation after generation.
We believe that quality is not a feature - it is the foundation. Every batch of steel that leaves our facility undergoes rigorous testing against BIS standards. We do not cut corners, ever.
As Northeast India's premier structural steel brand, we carry the responsibility of fueling the region's development. We invest continuously in our facility, our people, and our processes to maintain this leadership.
Our relationship with customers extends beyond the transaction. We partner with contractors, fabricators, and builders to understand their needs, respond quickly, and deliver reliably - every single order.
The Assam Tubes Ltd operates a fully integrated steel manufacturing facility at Amingaon. Our end-to-end process gives us complete control over raw material quality, production parameters, and finished product standards.
State-of-the-art induction furnaces melt and process raw billets at precise temperatures, ensuring chemical composition uniformity in every heat.
Our rerolling mills shape the molten steel into precise structural sections — angles, channels, bars, and rounds — to exact dimensional tolerances.
Quality inspectors are embedded throughout the production line. From incoming raw material to outgoing finished product, every stage is monitored and documented.
All products are tested to BIS IS:2062 standards. Our certification is not just a mark — it's a commitment renewed with every batch we produce.
Every great brand has a story. Duro Z was born from the belief that structural steel should represent not just physical strength, but the aspiration to build something greater.
Durability is the first promise of Duro Z steel. Built to withstand the forces of nature, the stress of load, and the test of time, our products are engineered for permanence.
U-R-O — Endurance follows. Every Duro Z section endures where others fail. It endures corrosion, seismic stress, and the demands of heavy industry. Endurance is what separates good steel from great steel.
Z stands for Zenith — the topmost point, the pinnacle of achievement. At The Assam Tubes Ltd, we set our sights at the zenith of what is possible in structural steel manufacturing.
Zenith is not a destination — it is a direction. We continuously push the boundaries of quality, consistency, and customer service to reach ever-higher standards in everything we do.
— The Duro Z Brand Promise, The Assam Tubes Ltd
Whether you’re a contractor, fabricator, or builder — let’s discuss how Duro Z steel can power your next project.