1. Check Diameter & grade of steel
So, first of all, you have to check the diameter of steel and also the grade of steel we have different grades of steel 40,60 and 75 .so must be check the diameter and grade of steel before buying.
2. Check the weight of steel
Here is an example to check the weight of steel.
If we have an 8 mm diameter steel bar and length is 12 meters so find the weight of the steel bar?
Formula to calculate the weight of steel bar = D²L/162
Given data:
D = 8 mm ,L = 12 meters
So weight of steel = ( 8 x 8 x 12)/162
Weight of steel = 4.74 kg
3. Check for rust and loss Coating
if you wanna purchase you have to check rust and lose coating .it should not be rust and it should not be loose if there is loose coating in steel don’t you it for building construction.
4. Check for cracks
If we bend steel 180 degrees so the surface of the steel is the top surface of the steel should not be white and it should not be developed any cracks. It’s very important so don’t you this steel.
5.  Never store steel on the ground
sometimes we placed steel on the ground with that steel should rust and rusted steel should not be used in building construction otherwise it will make more problems and rust can we weak strength of the steel remember these points. If you wanna store steel on the ground so it should be up from the ground mini 4 inches.
So these are some important tips which I have to discuss before purchasing steel.

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