20 gauge is equel to 0.8mm
Now a days ,gauge is normally replaced by mm size, for calculating per SQM wt of GI sheet just multiply 7850 by thickness in mm i.e per SQM wt of 0.55 mm sheet 7850x0.55 = 4.31 Kg/sqm
what is the thickness of 24 swg Galvanised iron sheet
friend use formula weight of iron sheet = l*b*t* 7.85 where; l => lenght of the sheet b => breadth of the sheet t +> thickness of sheet and 7.85 is taking as constt.
It is simple ! = length in meters *width in meters *thickness in mm*density of the material (i.e 8.1 in this case )
It depends on the thickness of the sheet which usually comes in between 0.1 to 1 mm thickness. For the same area, the later one is 10 times more heavier than the former one. Now consider a sheet with 0.63mm thickness. As the density of the steel is 8, the weight of sheet would be 8*0.63=5.04 kg/sq. meter
how we can calculate the formula of Gi sheet
Approximate Weight per Square Metre of Sheet (for 120 Gsm Coating) APPROXIMATE WEIGHT 7.45 Kg PER SQUARE METRE
The difference between the GI sheet galvanized and mild sheet steel is the gauged used. The other difference is the materials used and the galvanization aspect.
ac sheets are asbestos cement sheets and gi sheets are galvanized iron sheets.
8*4 G.I sheet weight
7850 kg/m3