Pipe Body Weight Calculation.

1. Weigh an offcut.
2. Measure the length.
3. Pro-rata to the length of the pipe in question.

Dear Mr.!

1. Estimate weight of pipe in metric tons per kilometer:

To estimate the weight of pipe in metric tons/kilometer, multiply the nominal diameter by the number of sixteenths of an inch in wall thickness.

Example. Find the weight of pipe in metric tons/km for 20-inch dia pipe, wall thickness 1/4 inch

4x20 = 80 tons (metric) per kilometer.

The actual answer from pipe table is 79 metric tons/km.

This common rule is based on a density of 900 pounds per cubic foot for steel. For larger diameter thin wall pipe, this approximation gives an answer usually 01 % low. The accompanying table gives a comparison between actual weights in metric tons/km, as compared to that calculated by this rule

2. Pipe weight from OD and wall thickness:

Weight (pounds per foot) = Dt - t2x10.68 (note: t2 is square t)

where D = OD, inch

t = WT, inch

the above equation is based on a density of 490 pounds per cubic foot for steel. High-yield-point, thin wall pipe may run slightly heavier than indicated.

There is another equation for calculation but a bit more complicate with material tolerance, relative weight factor. If needed, i could show you later. Hope it could help you in calculation especially for quick calculation onsite.

Regards

Howard