ERW Steel Tube Weight Calculation

To calculate the weight of an ERW (Electric Resistance Welded) steel tube, you will need to know the dimensions of the pipe and the density of the material it is made of. Here is a general formula you can use to calculate the weight:

Weight = (OD - THK) x THK x 0.0246615 x L x Density

Where:
OD = outer diameter of the pipe
THK = thickness of the pipe
L = length of the pipe

Density = mass/volume (density of the material the pipe is made of)

Note: The constant 0.0246615 is used to convert the weight from pounds per cubic inch to pounds per foot.

So, to calculate the weight of an ERW steel tube made of a certain material, you would need to:

Measure the outer diameter (OD) and thickness (THK) of the pipe.
Determine the length (L) of the pipe.
Look up the density of the material the pipe is made of.

Plug the values into the formula above and solve for the weight.

For example:
Suppose you have an ERW tube with an outer diameter of 10 inches, a thickness of 0.25 inches, and a length of 20 feet, made of carbon steel (density of 0.284 lb/in³). Using the formula above:

Weight = (OD - THK) x THK x 0.0246615 x L x Density Weight = (10 - 0.25) x 0.25 x 0.0246615 x 20 x 0.284 Weight = 46.23 lbs

Therefore, the weight of the carbon steel ERW pipe is 46.23 pounds.

How to calculate ERW steel tube weight per foot?

ERW Pipe & Tube Weight Formula - This formula can be used to determine the weight per foot for any size of pipe with any wall thickness.

The formula is: Wt/Ft = 10.69*(OD - Wall Thickness)*Wall Thickness

How to calculate Weight of Empty ERW Tube?
Weight of empty pipe per unit length can be calculated as

wp = ρm Am
    = ρm π (do2 - di2) / 4 
    = (π / 4) ρm (do2 - di2)

where
wp = weight of empty pipe per unit length (kg/m, lb/in)
ρm = density of pipe material (kg/m3, lb/in3)
Am = cross-sectional wall area of pipe (m2, in2)
do = outside diameter (m, in)
di = do - 2 t = inside diameter (m, in)
t = wall thickness (m, in)

How to calculate Weight of  ERW Tube with Liquid?
Weight of pipe with liquid can be calculated as

w = wp + wi
   = ρm Am + ρl Ai     
   =  (ρm π (do2 - di2) / 4) + (ρl π di2 / 4)
   = (π / 4) [ρm (do2 - di2) + ρl di2]          

How to calculate Weight of Liquid in ERW Tube?
Weight of liquid in pipes per unit length can be calculated as

wl = ρl Ai
    = ρl π (di / 2)2 
    = (π / 4) ρl di2

where
wl = weight of liquid in pipe per unit length of pipe (kg, lb)
Ai = cross-sectional inside area of pipe (m2, in2)
ρl = density of liquid (kg/m3, lb/in3)

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