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If you Google "mild steel density" you find that a value of 7.85 is not uncommon.

If you calculate the volume of steel in your pipe (Google "volume of cylinder") calculate the volume of the OD cylinder and subtract the volume of the ID cylinder and multiply that by the density you get the mass of the pipe multiply that by the gravitational constant (Google "gravitational constant") of your location to get the weight.

Or you could just Google "ms pipe weight calculator" (see the Sources and related links below) find the pipe shape and put in your values, hit "Calculate" and get the answer 34.6889 lbs (which has far too many significant figures (converted to kg by Google as 15.7 kg still with one significant figure too many as two of the original dimensions only had two significant figures)

Q: How can you calculate the weight of a ms hollow pipe 90mm OD - 1.20 mm thickness - length 6000 mm?

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It is simple ! = length in meters *width in meters *thickness in mm*density of the material (i.e 8.1 in this case )

weight of ms hollow bar 20mm*20mm

In order for your to know the weight must know the thickness of the angle bar.

the weight is equal to density x volume density of aluminum is 2.77 g/cc = 0.00000276 kg/mm^3 WEIGHT= 1200 = .00000277 x 2515 x.8 x LENGTH LENGTH = 1200/.00000277/2515/.8 = 215,300 mm = 215.3 meters

With the information given in the question you cannot. The volume of the pipe is pi(R2 - r2)*L where R = outer radius = outer diameter*0.5 = ID/2 + thickness = 108 mm r = inner radius = inner diameter*0.5 = ID/2 = 100 mm L = length = 1000 mm Next, to convert volume to mass, you need to multiply by the density. You then need to multiply the mass by the gravitational acceleration to convert to weight. If the mass is in kilograms, and the gravitational acceleration is in metres/second2 the result will be in Newtons, the SI unit for weight.

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The answer is 12,553 m.

AREA*THICKNESS(length)*7.85 pi*r2*t*7.85 - in mm

You cannot. The mass depends on the material of the shaft and that has not been specified.

Weight of pipe per Meter in Kg for MS Pipes = 3.14 * (Outer diameter of pipe in Mtr. - wall thickness in Mtr. ) * Wall Thickness in Mtr. * 7850

It is simple ! = length in meters *width in meters *thickness in mm*density of the material (i.e 8.1 in this case )

density=mass/volume 7.850=2500kg/(0.47*L*0.914) Ravindra

The weight of polypropylene sheets depends on their length, width and thickness.

kg = 6.16546 x width mm x OD2 x bore2 ---- 1000000

specific weight of the sheet * area *thickness = weight of the sheet

If it section is a rolled like beam,channel,square,angles&flat. weight=Length x unit weight unit weight of this section is=123kg/m^3 If it is plate or sheet weight=Length x width x thickness x 7.85(sp.gravity of steel)

Your answer depends on the thickness of the wool. A thread-weight length will be longer than a bulky-weight yarn.

weight of ms hollow bar 20mm*20mm