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The carbon steel seamless pipes find application widely in the oil and gas industry, petrochemical industry, power generation, construction industry, marine industry, and infrastructure. They have pipes that are made without any welding seams, which makes them stronger, more reliable and able to withstand high pressure and temperature conditions. To engineers, fabricators, and project managers, the knowledge of the weight of pipes is important in the structural calculations, transportation planning and cost estimation. In order to choose the proper size of pipes and their wall thickness depending on the conditions of the project, a detailed carbon steel seamless pipes weight chart is used.
A carbon steel seamless pipe weight chart in mm is particularly sought after by many professionals to use in design drawings and fabrication in metric-based drawings. Some are trying to find a carbon steel seamless pipes weight chart in kg so that they can calculate the weight per meter to use in the logistics and structural load calculations.
Why Pipe Weight Calculation is Important
Accurate weight calculation ensures:
- Proper load distribution in structural design
- Correct transportation and freight planning
- Accurate procurement quantity estimation
- Efficient installation planning
- Reduced risk of structural failure
The following is the normal formula that is used to find out the weight of seamless pipes per meter:
Weight (kg/m) = (OD – WT) × WT × 0.02466
Where:
OD = Outside Diameter in mm
WT = Wall Thickness in mm
0.02466 = Constant derived from carbon steel density (7.85 g/cm³)
Below are three detailed tables covering different sizes and schedules.
Carbon Steel Seamless Pipes Weight Chart in mm (Small to Medium Sizes)
This table provides nominal bore size, outside diameter in mm, wall thickness in mm, and approximate weight per meter.
| Nominal Size (NB) | Outside Diameter (mm) | Wall Thickness (mm) | Weight (kg/m) |
| 15 mm (1/2″) | 21.34 | 2.77 | 1.27 |
| 20 mm (3/4″) | 26.67 | 2.87 | 1.69 |
| 25 mm (1″) | 33.40 | 3.38 | 2.50 |
| 32 mm (1 1/4″) | 42.16 | 3.56 | 3.38 |
| 40 mm (1 1/2″) | 48.26 | 3.68 | 4.05 |
| 50 mm (2″) | 60.33 | 3.91 | 5.44 |
| 65 mm (2 1/2″) | 73.03 | 5.16 | 8.63 |
| 80 mm (3″) | 88.90 | 5.49 | 11.29 |
| 100 mm (4″) | 114.30 | 6.02 | 16.07 |
| 125 mm (5″) | 141.30 | 6.55 | 21.77 |
This Carbon Steel Seamless Pipes Weight Chart in mm is useful for fabrication shops and engineering teams working with metric specifications.
Carbon Steel Seamless Pipes Weight Chart in kg (Medium to Large Sizes)
The following chart focuses on larger diameter seamless pipes used in heavy industrial and pipeline applications.
| Nominal Size (NB) | Outside Diameter (mm) | Wall Thickness (mm) | Weight (kg/m) |
| 150 mm (6″) | 168.30 | 7.11 | 28.26 |
| 200 mm (8″) | 219.10 | 8.18 | 42.55 |
| 250 mm (10″) | 273.05 | 9.27 | 60.33 |
| 300 mm (12″) | 323.85 | 10.31 | 79.72 |
| 350 mm (14″) | 355.60 | 11.13 | 94.55 |
| 400 mm (16″) | 406.40 | 12.70 | 125.00 |
| 450 mm (18″) | 457.20 | 14.27 | 158.45 |
| 500 mm (20″) | 508.00 | 15.09 | 184.00 |
| 550 mm (22″) | 558.80 | 16.00 | 215.60 |
| 600 mm (24″) | 609.60 | 17.48 | 258.60 |
This Carbon Steel Seamless Pipes Weight Chart in kg helps engineers calculate structural load and transportation weight efficiently.
Schedule-Based Carbon Steel Seamless Pipes Weight Chart
Pipe schedules determine wall thickness and pressure handling capacity. Below is a schedule-based weight chart for selected sizes.
| Nominal Size | Schedule | Wall Thickness (mm) | Weight (kg/m) |
| 2″ | SCH 10 | 3.91 | 5.44 |
| 2″ | SCH 40 | 5.54 | 7.48 |
| 2″ | SCH 80 | 8.74 | 11.48 |
| 4″ | SCH 10 | 6.02 | 16.07 |
| 4″ | SCH 40 | 8.56 | 22.32 |
| 4″ | SCH 80 | 13.49 | 33.54 |
| 6″ | SCH 10 | 4.78 | 19.27 |
| 6″ | SCH 40 | 7.11 | 28.26 |
| 6″ | SCH 80 | 10.97 | 42.56 |
| 8″ | SCH 40 | 8.18 | 42.55 |
The schedule-based Carbon Steel Seamless Pipes Weight Chart is essential for pressure piping systems in refineries, chemical plants, and power stations.
Applications of Carbon Steel Seamless Pipes
Carbon steel seamless pipes are used in:
- Oil and gas transmission
- Boiler and heat exchanger systems
- Structural construction projects
- Water pipelines
- High-pressure industrial systems
- Power generation plants
The seamless pipes are more powerful, more enduring, and more pressure-resistant due to their homogeneous structure and lack of swelled joints.
Conclusion
The Carbon Steel Seamless Pipes Weight Chart is a detailed weight chart that is very essential in the execution and planning of materials of projects. Regardless of whether it is a Carbon Steel Seamless Pipes Weight Chart in mm to determine the dimensions of the carbon steel seamless pipes or a chart to use the weight in kilograms to calculate the engineering solutions, these charts present good reliable information to use in engineering.
One should always confirm the specifications to international standards like ASTM, ASME, or API to ensure safety, compliance, and performance efficiency before making final decisions with regard to the kinds of pipes to be used.