'' Checking the quality of material before using it,
is always better than checking it after utilization.,,



Raising the bar to international standards

When a company aspires to make high-quality products, the choice of technology is critical. To produce reinforcement bars TMT. Metaroll has adopted the German Thermex Cooling technology which is a safer factory implementation and a proven technology that is trusted by civil and structural designers for the quality of the TMT rebar.

Quenching & Self Tempering (TMT) Process

There are two phases of cooling that give the rebar its unique property, which is due to the difference between the peripheral layer and the core of the rebar. From the final rolling mill stand, the steel bar undergoes intensive cooling in the Thermex Water Cooling system which hardens the surface but as this is for a brief while, the core is still hot. The core cools more slowly over a longer time in the atmosphere and a fine ferrite-pearlite structure forms in the center, while there is a tempered martensite zone near the surface. The result is a steel with better workability, bendability, and elongation which gives more lasting strength to the civil structure.

Technology standard has become the market standard

The market in India has been transitioning to the TMT (thermo-mechanically treated) rebars particularly over the last decade. By means of the Thermex TMT technology, Metarolls produces Gr.Fe500 steel with elongation more than 14.5% as the most suited product for reinforcement. This product has been steadily replacing Fe415 as the construction steel of choice with its better elongation values. Our licensed technology provider, HSE of Germany supplies equipment that can manufacture products that meet French, Swiss, German and British standard specifications.

High Standard, The Preferred Choice


Our facility is fully equipped with quality control laboratory that houses a spectrometer, a computerized tensile testing
machine, bending machines among other vital equipment.
Experienced professionals from in-house quality assurance & control department conduct testing for each product on
various individual parameters. We also perform testing under third party inspection by agencies of high reputation like SGS.

Metarolls Production Capacity

The right grade of steel is vital for your structure to have lasting strength. At Metarolls Steels, we strive to provide Indians the same standard of products, as is available globally. A good reason why we have developed an advanced grade of steel to secure your most prized asset, your home. Metarolls TMT bars are backed by 29 years of research and performance. Thermex technology by HSE, Germany.
Metarolls Steels has steadily won the trust of homeowners, builders, engineers, and companies over the decades. It fulfills the technical requirements of various kinds of projects — infrastructural, commercial, industrial, and residential.

Our production capacity in 1991 was to the tune of 10,000 MT. 

By 2011, we had moved forward and expanded our output capability to 40,000 tons monthly & 0.48 million tons annually.

Presently, our manufacturing scale has extended to reach 1.25 L Metric Ton monthly with the help of 7 Induction furnaces.

And only one way to win and retain customer trust. Tangible and proven evidence of quality through measurement. In whole-hearted acceptance of this ground truth, Metarolls Steels as an ISO 9001:2015 company, set about instituting its complete Quality Measurement Systems as part of its Quality Management process.

Quality, we believe, is the result of sincere effort, intelligent direction, and skillful execution. Our products proudly bear the IS:1786 and IS:13920 mark of the standards bureau. What’s more, we are the pioneer in the country to have each manufactured Bar certified by SGS Online. What all of this does for our customers – both individual and institutional – is that it assures them of a robust and lasting product.

Our products are thoroughly tested at our full-fledged Testing & Inspection facility. We check Chemical as well as Physical parameters. We diligently audit our quality system to be able to refine it further. New software tools are incorporated to stay in tune with the state-of-the-art.

On the one hand, there’s the sophistication of equipment and on the other, there’s the all-important culture of quality. To sensitize our personnel on all aspects of implementing a Quality System, we conduct training that includes accountability to customers.


High Standard, The Preferred Choice


From each incoming vehicle of raw material, a random sample is taken from different places and melted in our 5 kg furnace.
This furnace is an exact mini version of our main induction furnace. A sample of this formed hot molten liquid is tested on the
spectrometer. Initially, the chemical constituent is checked. Raw material is accepted only if final metal recovery is greater
than 80% & phosphorus and sulphur is less than 0.055.


Reduction in liquid molten waste (slag) from induction furnace.

Increase in efficiency of manufacturing process, once the waste
is minimized at the initial stage.

Tested raw material always results in controlled chemical
composition of final product.



Testing of liquid molten at Induction Furnace:

While finalizing the liquid metal in melting furnace, a sample is drawn from it at every 25 minute’s interval and tested on modern German spectrometer for chemical composition.


Tensile test on computerized UTM:

A 100-ton capacity of UTM (Universal Testing Machine) is installed in the plant to test mechanical properties of TMT bars. Each bar from the lot is tested on the UTM.


Quenching & Self Tempering (TMT) Process

The bending test of TMT bar is performed to test the ductility of steel without affecting the steel strength. This test is conducted as per IS 1599 and using appropriately sized mandrel as specified in IS 1786:2008.


Ring test is performed to check the quality of quenching that affects the mechanical properties of the bar.

TMT bar Cross section surface is dipped into a solution of ethanol (92% to 95% ) & nitrate (5% to 10% ). It forms distinguishing colour circles that represent the quality of quenching done on a bar.