Plain hot rolled round bars are called MS Round bars.
No technology is currently available to increase the strength and roll a uniform ribbed bar.
Hot rolled bars with cold twisting after rolling are called cold twisted rebars.
The technology was not available to improve the strength without sacrificing other properties.
Hot rolled ribbed bars with online quenching/tempering are called Thermo Mechanically Treated bars.
TMT bars are highly superior compared to others in all critical quality parameters.
Rebars can be manufactured by the following processes:
Any building during its existence encounters three types of loads:
i. Dead Load:
This is the static load of the building itself including the weights of roof, beams, walls, water tank, etc. which are fixed.
ii. Live Load:
This is the additional loads over the dead load like furniture, other appliances, people, stored water, plantations, etc. and varies in
iii. Lateral Load:
These are the loads created by winds, ground vibration, rains,earthquake, etc. and are mostly unpredictable.
Major constituents of RCC buildings:
The above constituents are used to construct Structural and Non-Structural members of a building.
Structural Members are constructed to withstand the major structural loads/stress of a building and common structural members are:
Nonstructural members are not supposed to withstand major loads
A Structural Member in a building encounters two basic types of loads:
E.g: In a column, there is compressive stress mostly as the weight of the building
tries to compress the column. In a beam, there is both compressive and tensile load as under:
Therefore, to make the building enable to withstand both tensile and compressive stress, steel reinforcement is used.
Tata Steel, SAIL, RINL and JSW and Electrotherm, all produce steel through the iron ore route. This ensures that the steel produced is free from tramp elements. While Tata, SAIL, RINL, and JSW use BF-BOF-LRF route for the production of steel, Electrotherm uses BF-Sponge Iron-IF-LRF route for the production of the same. The use of LRF (ERF+ELdFOS™) ensures refining of steel, desulphurization,dephosphorization, homogenization, inclusion flotation and low gas levels which results into highest quality of steel confirming to most stringent BIS norms.
The consumption of rebars for construction of any house depends on various factors, like the design of the house, the depth of foundation, no. of stories, etc. However, in a two-storied building, the consumption of rebar per sq. ft. is approximately 4-4.5 kg as per the thumb rule.
TMT stands for Thermo-Mechanical Treatment. A process that is far superior to the conventional manufacturing process.
ET TMT is a superior rebar manufactured through the TMT Process by Electrotherm India Ltd.
ET TMT is available from 8 mm to 40 mm.
ET TMT falls within the specifications of BIS 1786:2008. We offer Fe 500, Fe 500 D,Fe 550, & Fe 550 D. We also offer CRS grades in all these varieties.
ET TMT is the rebar in the market today that provides consistent mechanical and chemical properties, rebar after rebar. Strong quality control, ensures that each rebar reflects the trust and quality that ET TMT name commands.
ET TMT comes in easy to handle transport bundles, of standardized weight and a fixed number of bars per bundle.
Rebars develop reddish colour at times due to coming into direct contact with moisture and air. However, reddish rebars can very well be used in construction, if they are in proper physical form, weight, and strength.
Yes, there are certain alloying elements which when added to steel, induce anti-corrosion properties. The most common example is stainless steel where elements like Cu, Ni & Cr are used to a substantial quantity to make it anti-corrosion. In some very expensive constructions, Stainless Steel Rebars have also been used abroad. However, for general construction stainless steel variety cannot be used as rebar reinforcement, because the cost of such rebars will be nearly five times more than the conventional rebars.
However, for coastal areas & water tanks, CRS grades made by ET TMT are recommended.
ET TMT also offers Epoxy Coated Rebars and it is mainly used in making bridges and roads. It is also recommended by the government for government projects in their tender documents. In the case of specific enquiries, ET TMT can also offer the same to other customers as well.