Calculating Pipe Weight
A weight calculating formula for steel pipes
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If the outside diameter and the wall thickness of a steel pipe is known the weight per foot can be calculated as:
m = 10.68 (do - tw) tw (1)
where
m = weight per foot (lb/ft)
do = outside diameter (inches)
tw = wall thickness (inches)
Example - Weight of 4" Schedule 40 Steel Pipe
The outside diameter (do) of 4" Schedule 40 Steel Pipe is 4.500 inches. The wall thickness is 0.237 inches. The weight per foot can be calculated using (1) as:
m = 10.68 ((4.500 in) - (0.237 in)) (0.237 in)
= 10.79 (lb/ft)
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