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Thermo-Mechanically Treated (TMT) bars are high-strength reinforcement bars having a tough outer core and a soft inner core. TMT  is also known as metallurgical process. These TMT Bars should be manufactured as per the BIS (Indian Standards) Standards.

In today’s market 500D & 550D TMT Bars are most recommended bars for all civil & retail construction purposes because of the Sulphur, Phosphorus and Carbon ration in bars which are best recommended for seismic and sensitive zones.

At SBF ISPAT  , we provide the highest level of quality of TMT bars – “ SBF RAPID THERMEX 550D ” .Our each bar is Physically and Chemically tested bar and we provide 100% satisfaction with test report with every dispatch.

Strong Foundation with Strong TMT Bars.

Strong infrastructures require a strong foundation. A promising future depends on a solid foundation; this is especially applicable during construction. TMT bars, also known as Thermo- Mechanically Treated Steel bars, are one of the most important components for construction purposes-

  • SBF Rapid 550D iconic TMT bars are a solid backbone for constructing rock-solid buildings.
  • We are government-certified and leading experts for producing TMT bars creating a strong India with world-class infrastructure for homes, schools, offices, stadiums, airports, Power-Plants, Dams, and even skyscraping buildings.
  • Based in Bhiwadi, Rajasthan, we excel in manufacturing high-quality TMT bars, billets, and ingots covering major parts of North India and soon presence across Pan-India.
  • Our manufacturing process for TMT bars begins from scratch and undergoes several processes to cast into ingots, Billets and TMT rods having long-term strength and benefits.

The Best Features of SBF Rapid TMT Bars.

  • We manufacture TMT bars using advanced and complex machinery systems for processing, such as rolling mills, furnace casting, and German-quality Thermax technology.
  • We ensure the highest form of purity and superior materials for our products beginning from the processing of obtained raw materials to the bundling of TMT bars.
  • A perfect blend of Carbon, phosphorus and Sulphur as per the BIS standards goes into manufacturing rods guaranteeing high-quality construction material.
  • While manufacturing, we undergo several test parameters to meet the excellent qualities. Manufactured with the highest precision for a robust building base.
  • Our TMT bars have high bendability and are available in different grades of ductility 500D/550D TMT bar to 600 TMT bar for building simple to complex buildings.
  • They have a hard outer core to provide strength, bendability and toughness and a soft inner core for flexibility and bendability to manufacture a perfect shape bar.
  • Both together multiply the strength of infrastructure without collapsing it.
  • A perfect balance of high ductility and elongation renders it an earthquake-resistant and fire-resistant TMT bar suitable for various construction purposes, with the best performance throughout for a long duration.
  • Our TMT bars reinforcing strength are recommended by civil engineers and structural engineers and have undergone several strength and quality tests by various organizations such as the Shri Ram Institute of Industrial Research, RSRDC- Jaipur and Bureau Veritas.
  • We specialize in green manufacturing, high tensile strength and quality construction materials. Our TMT bar manufacturing for 550D QST reduces carbon emissions to the maximum extent possible.
  • Manufacturing standard and economical high-grade TMT bars having high ductility, durability, and weldability with precise manufacturing ensure the best concrete structure.
  • We are partners in building robust structures that are corrosion-resistant to delay rusting and tensile strength to support a large infrastructure.

Properties of SBF Rapid TMT bars.

  • While manufacturing is a long process, Our TMT bars are available in different sizes for building simple to complex buildings.
  • We provide several sizes ranging from 8 mm to 40 mm with different physical properties such as weights, Tensile strength, Elongation, Tensile strength, Yield stress and chemical properties.
  • Manufactured with the highest precision for a robust building base, our TMT bars are beyond excellent products, available at cost-effective prices.
  • Some of the world class TMT bars which SBF rapids provide and their properties are mentioned below-

500D TMT bar

The Chemical properties are as follow-

Maximum(%) Maximum percentage by BIS SBF rapid
Carbon 0.25 0.18-0.25
Sulphur 0.040 0.25-0.35
Phosphorus 0.040 0.28-0.35
Phosphorus and Sulphur 0.075 0.62-0. 70
  • We ensure that steel bars are manufactured within set standard by Bureau of Indian Standard to give shape to bars with low carbon emissions for reducing carbon footprints , low sulphur for higher weldability.
  • Furthermore , a 500 D steel bar also has high tensile strength and a greater degree of ductility (16%),durability, corrosion resistance, fire resistance than any other steel bars for long-term use, and even suitable for earthquake prone areas



550D TMT bar.

Chemical properties-

The chemical structure of the SBF Rapid 550D TMT bar runs as follows-

Maximum(%) Maximum percentage by BIS SBF rapid
Carbon 0.25 0.18-0.23
Sulphur 0.40 0.025-0.035
Phosphorus 0.040 0.025-0.035
Phosphorus and Sulphur 0.075 0.60-0.70


Physical properties.

These deal with tensile strength and ductility-flexibility of steel bars for suitable application.

Elongation (%) Tensile Strength
15% ≥ 1.08 more than actual 0.2 proof stress/Yield stress But not less than 600n/m2



600 TMT bar

Chemical properties.

Our steel bars follow the standards and instructions of the Bureau of Indian Standards for steel. The chemical properties are tabularized as follows.

Maximum(%) Maximum percentage by BIS SBF rapid
Carbon 0.30 0.18-0.25
Sulphur 0.040 0.025-0.035
Phosphorus 0.040 0.025-0.035
Phosphorus and Sulphur 0.075 0.060-0.070


Tensile Strength and elongation

Elongation (%) Tensile Strength
10% ≥ 1.06 more than actual 0.2 proof stress/Yield stress But not less than 660n/m2


SBF Rapid has the largest steel manufacturing plant in Rajasthan, providing high-grade steel bars for building infrastructure to meet the demands of infrastructure for progress and growth.

You can’t build a great foundation on a weak foundation. You must have a strong foundation if you are going to have a strong superstructure. – Gordon.B. Hinckley.



Billets are solid lengths of metal with square sections. They can be made of virtually any type of metal or alloy and to virtually any size to suit the part and production specifications. Billets are produced by continuous casting (CCM)

A billet is a section of metal used for rolling into bars, rods and sections. At SBF, billets are produced directly by Continuous Casting (CCM). Billets are used as raw materials or feedstock in extrusion, forging, rolling and other metal-processing operations.

At SBF ISPAT, we provide billets of various grades


A 550D TMT bar indicates a physical property of the steel bar's flexibility, breakability and elongation. It is relatively more ductile than the 500 TMT bar. Also, the number 550D indicates tensile strength, which a steel bar can withstand before a crack, a sign of permanent appearance on the steel bar.

A TMT bar of 550D is more suitable, as it allows high ductility and elongation up to 15%, in contrast to a TMT bar with tensile strength and toughness for withstanding capacity up to 500 MPa. Therefore, a TMT 550D is suitable for construction.

A TMT bar is manufactured within grades, depending on the standards set by the Bureau of Indian Standards (BIS) for manufacturing of steel bars in different ratios and proportions. SBF Rapid manufactures a high range of graded steel bars.

Fe stands for the chemical element -Iron, used with other chemical elements like carbon, sulphur, and phosphorus to manufacture steel bars with inherent physical and chemical properties.

The number 550 indicates/symbol of tensile strength in n/m2 or yield stress it can withstand. Therefore, Fe-550 grade steel bars are among several types of bars that have distinct chemical and physical properties that a manufacturer manufactures.

  • 600-grade steel is a variation in chemical and physical
  • Properties of steel bars by Rapid SBF, which manufactures top-of-line steel
  • According to set guidelines by the Bureau of Indian Standards.

Any variation in the grade of steel bar pinpoints a variation in physical property -such as tensile strength or pressure retention capacity of steel bars, above which it may collapse the structure, and chemical properties such as fire, earthquake, corrosion, or rusting resistance. 600-grade steel by SBF rapidity has a low corrosion rate and fire and earthquake resistance. In addition, it allows ductility, elongation, and tensile strength to remain without permanent damage up to 600 n/mm2.

SBF Rapids TMT adheres to the Bureau of Indian Standards (BIS) for manufacturing authentic TMT bars for constructing a range of infrastructure. The manufacturing process for steel bars goes through several levels and quality checks by German technology to have high-grade quality steel bars.

Please contact us through our website or on our customer care number: 7014288818.

SBF rapid manufacturing TMT steel bars is the brand to rely on for constructing buildings. We have the largest steel manufacturing plant, producing bars according to set guidelines and instructions from the Bureau of Indian Standards to provide maximum ductility, tensile strength, and corrosion resistance steel bars which produce a low carbon footprint, causing a minimum hazard to the environment.

Together, let’s build a strong tomorrow with highest level of purity across the bar!