About Us
Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
News
In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
Services
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Facility
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
The table below shows selected seamless steel pipe sizes and their theoretical weight per meter. The values are calculated using a steel density of 7.85 g/cm³.
| OD (mm) | WT (mm) | Theoretical Weight (kg/m) |
|---|---|---|
| 21.3 | 2.0 | 0.95 |
| 26.9 | 2.3 | 1.38 |
| 33.7 | 3.2 | 2.43 |
| 42.4 | 3.5 | 3.36 |
| 48.3 | 3.7 | 4.05 |
| 60.3 | 3.9 | 5.44 |
| 60.3 | 4.5 | 6.19 |
| 76.1 | 4.0 | 7.26 |
| 88.9 | 4.0 | 8.56 |
| 114.3 | 4.5 | 12.04 |
| 114.3 | 6.0 | 15.80 |
| 141.3 | 6.5 | 21.77 |
| 168.3 | 7.1 | 28.26 |
| 219.1 | 8.2 | 42.55 |
Practical Rule of Thumb
- For small diameter pipes (≤ 60 mm), weight is highly sensitive to wall thickness changes.
- For medium and large diameter pipes (≥ 114 mm), weight is mainly influenced by outer diameter.
- For the same outer diameter, every 1 mm increase in wall thickness typically increases weight by about 5%–12%.
The outside diameters listed above are selected from commonly used sizes specified in EN 10220, one of the principal dimensional standards for steel pipes.
For a wider range of NPS, OD, wall thickness and schedule combinations, see our Seamless Steel Pipe Weight Chart.
W = 0.02466 × WT × (OD − WT) · steel density assumed as 7.85 g/cm³
The calculator uses the following formula to estimate the theoretical weight of a seamless steel pipe:
W = 0.02466 × WT × (OD − WT)
Where:
W = theoretical weight per meter (kg/m)
OD = outside diameter (mm)
WT = wall thickness (mm)
The calculation assumes a steel density of 7.85 g/cm³.
Example: 60 × 4 mm seamless pipe
W = 0.02466 × 4 × (60 − 4)
W = 5.52 kg/m
For a 6 m pipe:
5.52 × 6 = 33.12 kg/pipe
This calculation gives the theoretical weight per meter, weight per pipe, and total weight for a specified quantity.
Steel is typically priced and purchased based on weight. By calculating the weight of seamless steel pipes, it becomes easier to estimate the material cost accurately. This is particularly important in industries such as construction, manufacturing, and infrastructure projects where precise cost estimation is crucial.
The weight of seamless steel pipes is an essential factor for transportation and handling purposes. Freight charges are often calculated based on weight, and knowing the weight of the pipes helps determine the shipping costs. Additionally, understanding the weight helps in planning the logistics and ensuring that proper equipment and manpower are allocated for loading, unloading, and installation.
The weight of seamless steel pipes is relevant to their structural integrity and load-bearing capacity. Engineers and designers need to consider the weight of the pipes when designing structures or systems that incorporate them. This ensures that the supporting elements can adequately handle the weight and stresses imposed by the pipes.
When installing or assembling seamless steel pipes, it is essential to know their weight to ensure proper handling and positioning. Knowing the weight helps determine the lifting equipment required and ensures that the installation process is carried out safely and efficiently.
Calculating the weight of seamless steel pipes allows for quality control and compliance with industry standards. By comparing the actual weight with the specified weight, manufacturers and inspectors can ensure that the pipes meet the required specifications, tolerances, and quality standards.
Overall, calculating the weight of seamless steel pipes provides valuable information for cost estimation, transportation, structural design, installation, quality control, and compliance. It facilitates efficient project planning, helps maintain safety standards, and ensures that the pipes perform as intended within their intended applications.
Q1. How do you calculate seamless steel pipe weight?
Use the pipe's OD and WT in the formula: W = 0.02466 × WT × (OD − WT). The result is the theoretical weight per meter in kg/m.
Q2. How much does a seamless steel pipe weigh per meter?
The weight per meter depends on the pipe's OD and WT. Use the weight table above or calculate the required size with the formula.
Q3. How do you calculate the total weight of seamless steel pipes?
Multiply the weight per meter by the pipe length and quantity: Total Weight = kg/m × Length × Quantity.
Read more:
Seamless Steel Pipe Weight Chart
E-mail: sales@eastern-steels.com
