Steel Pipe Weights
Reference data and engineering information about steel pipe weights for material properties applications.
Overview
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Engineering reference data for the weight of large-diameter welded steel pipes, covering nominal sizes from 26 to 60 inches with wall thicknesses from 1/4 to 1 1/2 inches. Understanding pipe weight is critical for structural support design, transportation planning, and installation handling.
Weights of welded steel pipes ranging size 26 - 60 inches with wall thickness 1/4 to 1 1/2:
Key Formulas
The weight per unit length of a pipe is determined by its cross-sectional area and material density.
Pipe Weight per Unit Length
Where the inner diameter (D_i) is calculated from the outer diameter (D_o) and wall thickness (t):
Alternate Form Using Wall Thickness
This form substitutes (D_i) directly:
Variables
| Symbol | Description | Unit |
|---|---|---|
| (W) | Weight per unit length | lb/ft |
| (D_o) | Outside diameter | in |
| (D_i) | Inside diameter | in |
| (t) | Wall thickness | in |
| (\rho) | Material density (for carbon steel, ~490 lb/ft³) | lb/ft³ |
Pipe Weight Reference Data
Nominal Size (in) | Outside Diameter (in) | Wall Thickness (in) | Weight per Foot (lb/ft) |
|---|---|---|---|
| 26 | 26 | 0.25 | 68.77 |
| 30 | 30 | 0.3125 | 98.05 |
| 36 | 36 | 0.375 | 142.43 |
| 42 | 42 | 0.5 | 223.73 |
| 48 | 48 | 0.625 | 320.5 |
| 54 | 54 | 0.75 | 433.38 |
| 60 | 60 | 1 | 643.68 |
Source: engineeringtoolbox.com
Unit Converter
Steel Pipe Weight Unit Converter
Weight Trend
The interactive chart below represents the source pipe-size/wall-thickness/weight diagram as plottable values.
Pipe Weight vs. Nominal Size
Original Pipe Weight Diagram
The original source diagram is preserved and represented by the interactive weight trend above.
Key Definitions
- Nominal Pipe Size (NPS): A dimensionless number that indicates the approximate pipe size. For NPS 14 and larger, the number corresponds to the outside diameter in inches.
- Wall Thickness (t): The uniform thickness of the pipe shell. For a given NPS, a higher schedule number (e.g., Sch 80) indicates a greater wall thickness and higher pressure rating.
- Schedule: A standardized designation (e.g., Sch 40, Sch XS) that defines the wall thickness for a given nominal pipe size.
Engineering Notes
- Density Variation: The calculated weight uses a standard density for carbon steel (490 lb/ft³). The actual weight can vary with alloy composition and manufacturing tolerances.
- Table Accuracy: The weight values in the reference table are for standard wall pipes. Weight changes non-linearly with wall thickness due to the changing circumference.
- Handling & Support: Total pipe weight (length × weight/ft) is critical for calculating loads on supports, cranes, and transport vehicles. Include allowances for fittings, flanges, and internal fluid weight in final design.
- Dimensional Tolerances: Outer diameter and wall thickness have specified manufacturing tolerances (e.g., per ASTM A135, ASTM A139). These tolerances affect the calculated weight.