Tubular Profiles

Metal Pipe & Hollow Tube Calculator

Cross-Section Legend:

OD: Outer Diameter of the pipe.

WT: Wall Thickness of the metal tube.

ID: Inner Diameter = Outer Diameter - (2 × Wall Thickness).

Material & Density

Outer Diameter - OD (mm)

Wall Thickness - WT (mm)

Total Length (mm)

Quantity (Pcs)

Calculated Theoretical Pipe Weight

Total (kg)

~ 3.48 kg

Total (lbs)

~ 7.67 lbs

Inner Diameter (ID): 44.0 mm | Per Piece: ~ 3.48 kg

How This Calculator Works

The theoretical weight of a hollow metal pipe is computed by subtracting the inner cylinder volume from the outer cylinder volume, then multiplying by the material density.

Step 1 (Inner Diameter): ID = OD - (2 × WT)

Step 2 (Cross-Section Area): Area = (π / 4) × (OD² - ID²)

Step 3 (Volume): Volume = Area × Length

Step 4 (Weight): Weight = Volume × Material Density

* Standard formula for Carbon Steel Pipes: Weight (kg/m) = (OD - WT) × WT × 0.02466 (where OD and WT are in mm).

Metal Density Reference

Material	Density (g/cm³)
Mild Steel / Carbon Steel	7.85
Stainless Steel (304/316)	8.00
Aluminium	2.70
Brass	8.50
Copper	8.96

Frequently Asked Questions

Why does theoretical weight differ from scale weight?

Manufacturing rolling tolerances (±5% to 10%), mill scales, internal seam welds, and slight alloy composition variations affect actual physical scale weight.

What is the difference between Pipe and Tube?

Pipes are specified by Nominal Bore (internal capacity) and Wall Schedule, whereas tubes are designated by precise Outer Diameter (OD) and Wall Thickness (WT).