How to Buy best TMT Steel or Understand primary and secondary steel – TMT rebars
We all know that steel is a very important metal in the world of building and construction. But what you might not know is what the difference is between steel TMT Per Kg and Steel TMT Per Piece? In this article, we will be going over the differences and how to buy steel TMT per kg or per piece.
TMT steel bars are equipped with U bent or straight bars. The size of the TMT steel bars is 40 feet.
Usually with civil engineers who advise contracts for the purchase of TMT bars in pieces, bundles, or barrels. Dimensions also vary depending on the construction of the building. For example, the mainboard needs a 10 mm / 12 mm rod, for distribution it can be 8 mm / 10 mm for a tree it can be 16 mm and 12 mm depending on the span. Some important points about TMT Bar Weight
The standard length of the sticks is 12 meters
According to IS 1786: 2008, the authorization of TMT bars must be complied with by the IS Directive
TMT bars produced in various diameters
TMT Bars Weight can be expressed in kilograms, quintals, or tonnes
1 Quintal = 100 kilos 1 ton = 1000 kg
Bundle Weight: Approx. 85 kg.
How to calculate weight of a steel bar
To determine the mass of steel per square meter, the formula is D * D / 162. D is the diameter of the crossbar in meters, and the mass is calculated in kilograms.
For example, if the section weight is 8mm. Then the mass of the penis per square meter –
8 * 8/162 = 0.396kg
The weight of the TMT strip can be calculated using the following:
W = T * T * L / 162
Where W is the weight of the candle in kilograms, D is the diameter of the candle in millimeters and L is the length of the candle in meters.
Now let’s calculate the weight of a standard 8mm bar. According to the formula
w = 8 * 8 * 12/162
W = 4.74kg
With TMT tapes, this weight can vary by up to 7%.
We calculate the weight of another rod with a diameter of 25 mm and a length of 12 meters. formula same –
b = 25*25*12/162
So W = 46.29 kg
a formula can be used to calculate the weight of any TMT strap, as long as the diameter and length are specified and the steel used meets the specified standards.
|Size(dia)||As per ISI (Kg/mt)||Actual Weight Approx (Kg/mt)||Weight per TMT Bar (Kg)||Approx. piece per Bundle|
|8mm||0.395 (+/- 7%)||0.375 – 0.390||4.74||18|
|10mm||0.617 (+/- 7%)||0.590 – 0.610||7.404||12|
|12mm||0.888 (+/- 5%)||0.85 – 0.87||10.656||10|
|16mm||1.578 (+/- 5%)||1.52 – 1.56||18.936||5|
|20mm||2.466 (+/- 5%)||2.36 – 2.44||29.592||3|
|25mm||3.853 (+/- 3%)||3.75 – 3.82||46.236||2|
|32mm||6.313 (+/- 3%)||6.1 – 6.30||75.756||1|
What is the price of steel TMT per kg?
Steel TMT is a type of steel that doesn’t need to be annealed. Steel TMT prices vary depending on the size and quantity of the order.
Check that the steel bars you buy have national certifications such as ASTM A706, JIS G3112, BS9, ASTM A615, JIS G3109 and IS 32 (mild steel bars), IS 1786 (high-strength deformed steel bars). Etc Certification assures you of the quality as well as the credibility of the manufacturer.
Primary steel is obtained from a steelmaking process is known as the Basic Oxygen Furnace (BOF) process. This process converts iron ore into chunks of iron that are used to make steel bars. steel bars are manufactured using the world-class technique on a fully automatic high-speed rolling mill with horizontal and vertical supports.
In primary steel, there are uniform veins with deeper grooves made on CNC machines. Thus, giving it maximum rib area, providing a strong and stable bond to the concrete, creating a stronger structure.
With big construction and tall buildings, it is always a good idea to use base steels or steels such as Fe500D and Fe550D, while the letter “D” stands for ductility, giving steel rebar a higher percentage of elongation.
Secondary steel production usually takes place in an electric arc furnace. The main raw material for the production of reinforcing steel is steel scrap. That’s why it’s called secondary steel. The secondary bars are usually rolled in a locally produced rolling mill
The ribs of the secondary steel are created using a local rib cutting process performed with hand tools. This in turn gives it an unsuitable flank area which leads to poor bonding with the concrete.
Innovations in the steelmaking process have led to improvements in the production of secondary brand steels. Primary steel is preferred for homes, but if you have good options, branded secondary steel is available. Saves money.
Top 10 TMT steel bar brand
- Tata Tiscon SD TMT Band
- Essar steel
- Jindal Panther TMT Band
- Sail Steel TMT Band
- Kamdhenu TMT Band
- Syam TMT bars
- Rathi TMT bars
- SRMB TMT steel bars
- JSW Neo steel TMT bars