MS Square Pipe Weight Chart & Calculation 2026: Complete Guide
MS Square Pipe Weight Chart & Calculation 2026: Complete Guide
Last Updated: September 2026
The MS Square Pipe Weight Chart 2026 is an important reference for engineers, fabricators, contractors, architects, steel traders, and procurement professionals who need to estimate the weight of mild steel square hollow sections. Knowing the approximate weight per metre makes it easier to calculate material quantities, transportation loads, project costs, structural requirements, and purchase quantities.
MS square pipes, commonly called Square Hollow Sections (SHS), are manufactured with a hollow square profile and a specified wall thickness. Their theoretical weight depends primarily on the outside dimensions, wall thickness, steel density, and manufacturing geometry.
This guide explains how to read an MS Square Pipe Weight Chart, calculate weight manually, convert kg/m into kg/ft, estimate the weight of a complete order, and understand the difference between theoretical and actual supplied weight.
MS Square Pipe Weight Chart 2026
The following are approximate theoretical weights for commonly used MS square pipe sizes. Calculations generally use a nominal mild steel density of 7,850 kg/m³.
| MS Square Pipe Size | Thickness | Approx. Weight |
|---|---|---|
| 20 × 20 mm | 2 mm | 1.13 kg/m |
| 25 × 25 mm | 2 mm | 1.45 kg/m |
| 25 × 25 mm | 2.5 mm | 1.77 kg/m |
| 30 × 30 mm | 2 mm | 1.76 kg/m |
| 30 × 30 mm | 3 mm | 2.57 kg/m |
| 40 × 40 mm | 2.5 mm | 2.94 kg/m |
| 40 × 40 mm | 3 mm | 3.49 kg/m |
| 40 × 40 mm | 4 mm | 4.52 kg/m |
| 50 × 50 mm | 3 mm | 4.43 kg/m |
| 50 × 50 mm | 4 mm | 5.79 kg/m |
| 50 × 50 mm | 5 mm | 7.07 kg/m |
| 60 × 60 mm | 3 mm | 5.37 kg/m |
| 60 × 60 mm | 4 mm | 7.04 kg/m |
| 75 × 75 mm | 3 mm | 6.76 kg/m |
| 75 × 75 mm | 4 mm | 8.91 kg/m |
| 80 × 80 mm | 3 mm | 7.25 kg/m |
| 80 × 80 mm | 5 mm | 11.78 kg/m |
| 100 × 100 mm | 4 mm | 12.05 kg/m |
| 100 × 100 mm | 5 mm | 14.92 kg/m |
| 100 × 100 mm | 6 mm | 17.73 kg/m |
| 120 × 120 mm | 5 mm | 18.06 kg/m |
| 150 × 150 mm | 6 mm | 27.00 kg/m |
| 150 × 150 mm | 8 mm | 35.56 kg/m |
| 200 × 200 mm | 8 mm | 48.01 kg/m |
| 200 × 200 mm | 10 mm | 59.00 kg/m |
These values are intended for estimation. Actual manufactured weight may vary according to dimensional tolerances, corner radius, manufacturing process, and applicable specifications.
How to Calculate MS Square Pipe Weight
The weight of an MS square pipe can be determined by first calculating its cross-sectional steel area and then multiplying that area by the density of steel.
The basic formula is:
Weight (kg/m) = Cross-sectional area (m²) × 7850 kg/m³
For a square hollow section:
Cross-sectional Area = Outer Area − Inner Area
Therefore:
Weight = [A² − (A − 2T)²] × 7850
Here:
- A = outside square dimension
- T = wall thickness
- 7850 kg/m³ = nominal density used for mild steel calculations
When dimensions are entered in millimetres, the resulting area should be converted appropriately before multiplying by steel density.
Example of 40 × 40 × 3 mm MS Square Pipe
Consider an MS square pipe measuring 40 × 40 mm with a 3 mm wall thickness.
The outside dimension is 40 mm and the wall thickness is 3 mm.
The internal dimension is:
40 − (2 × 3) = 34 mm
Cross-sectional area:
40² − 34² = 444 mm²
After converting the area and multiplying by the nominal steel density, the theoretical weight is approximately:
3.49 kg/m
Therefore, a 40 × 40 × 3 mm MS square pipe weighs approximately 3.49 kg per metre on a theoretical basis.
For a 6-metre length:
3.49 × 6 = 20.94 kg
So, one 6-metre pipe has an estimated theoretical weight of approximately 20.94 kg.
MS Square Pipe Weight Per Foot
Some fabrication and construction projects use feet rather than metres for measurements. To convert kilograms per metre into kilograms per foot, divide the kg/m value by 3.28084.
For example:
3.49 kg/m ÷ 3.28084 = approximately 1.06 kg/ft
This conversion is useful when preparing material estimates for projects where dimensions are specified in both metric and imperial units.
For larger orders, the same principle can be applied to determine the approximate total material weight.
How to Calculate Total Order Weight
Suppose a customer requires 100 pieces of 50 × 50 × 4 mm MS square pipe, with every pipe measuring 6 metres long.
The approximate weight is:
5.79 kg/m
Weight of one 6-metre pipe:
5.79 × 6 = 34.74 kg
Weight of 100 pieces:
34.74 × 100 = 3,474 kg
Therefore, the estimated order weight is:
3.474 metric tonnes
This calculation can help with procurement planning, freight estimation, storage arrangements, lifting requirements, and preliminary project costing.
Factors That Affect MS Square Pipe Weight
Several factors influence the calculated and actual weight of an MS square pipe.
Outside Dimensions
Larger square dimensions generally contain a greater quantity of steel and therefore result in higher weight per metre.
Wall Thickness
Thickness has a direct effect on cross-sectional area. A thicker wall increases both material consumption and weight.
Steel Density
The theoretical calculation commonly uses 7,850 kg/m³ for mild steel. The actual density can vary slightly depending on the steel composition.
Corner Radius
Commercial hollow sections generally have rounded corners rather than perfectly sharp corners. This geometry can cause differences between a simple theoretical calculation and actual manufactured weight.
Manufacturing Tolerances
Actual dimensions and wall thickness may vary within the tolerances permitted by the applicable product specification.
MS Square Pipe and IS 4923
For structural hollow sections in India, IS 4923 is an important standard to consider. When ordering square hollow sections for structural applications, buyers should clearly specify the required dimensions, wall thickness, grade, length, standard, inspection requirements, and documentation.
For projects requiring traceability, a Material Test Certificate (MTC) may also be requested. The applicable grade and standard should always be confirmed according to the project specification rather than assuming that every MS square pipe has identical properties.
Theoretical Weight vs Actual Weight
An MS Square Pipe Weight Chart normally provides theoretical or calculated values. The actual supplied weight may differ because of dimensional tolerances, wall-thickness variation, corner geometry, length tolerance, and manufacturing practices.
Therefore, weight charts are particularly useful for preliminary estimation, stock planning, quotation preparation, transportation calculations, and project planning.
For commercial settlement, buyers should follow the agreed purchasing terms and consider actual supplied dimensions and weight where applicable.
Applications of MS Square Pipes
MS square pipes are used across construction, fabrication, engineering, infrastructure, and industrial projects. Common applications include:
- Structural frameworks
- Industrial sheds
- Warehouse structures
- Staircases
- Railings and handrails
- Gates and fencing
- Machinery frames
- Solar support structures
- Agricultural equipment
- Automotive fabrication
- Furniture manufacturing
- General engineering structures
The appropriate pipe size and wall thickness should be selected according to the project's structural calculations, loading conditions, span, connection design, environment, and applicable standards.
How to Select the Correct MS Square Pipe
Before purchasing, provide complete technical information to the supplier.
1. Confirm the dimensions: Specify the required outside size, such as 40 × 40, 50 × 50, or 100 × 100 mm.
2. Specify wall thickness: Select the required thickness according to the engineering and fabrication requirements.
3. Confirm the standard: State the applicable IS or project specification.
4. Mention the length: Specify standard or required cut lengths.
5. State the quantity: Give the number of pieces or total required length.
6. Request documentation: Mention MTC, inspection, testing, or other documentation if required.
7. Confirm delivery details: Provide the destination and packing requirements for accurate freight calculation.
MS Square Pipe Price Calculation 2026
The price of MS square pipes changes according to steel market conditions and commercial factors. Size, thickness, grade, quantity, manufacturing process, testing, freight, taxes, and delivery location can all influence the final quotation.
A simple preliminary calculation is:
Estimated Material Cost = Total Weight × Applicable Price per kg
For example, if an order weighs 3,474 kg, multiply that weight by the supplier's current quoted price per kilogram.
Because steel prices can change, buyers should request a current quotation rather than relying on an outdated online price.
Why Choose Sachiya Steel International Private Limited?
Sachiya Steel International Private Limited supplies steel products for construction, engineering, fabrication, infrastructure, and industrial applications. Customers can provide their required MS square pipe dimensions, thickness, quantity, standard, documentation requirements, and delivery location to receive a specification-based quotation.
For enquiries regarding MS square pipes, product availability, technical specifications, or project requirements:
Phone: +91 9769056007
Email: sales@sachiyasteel.com
Website: www.sachiyasteel.com
Frequently Asked Questions
1. What is an MS Square Pipe Weight Chart?
It is a reference table showing the approximate theoretical weight per metre for different square pipe dimensions and wall thicknesses.
2. How is MS square pipe weight calculated?
Weight is calculated from the difference between the outer and inner cross-sectional areas, multiplied by the nominal density of steel.
3. What density is used for MS square pipe calculations?
A nominal density of 7,850 kg/m³ is commonly used for theoretical mild steel calculations.
4. What is the weight of a 40 × 40 × 3 mm square pipe?
Its theoretical weight is approximately 3.49 kg per metre.
5. How do I calculate the weight of a 6-metre pipe?
Multiply the weight per metre by six. For example, 3.49 kg/m × 6 = approximately 20.94 kg.
6. Does wall thickness change the pipe weight?
Yes. Increasing wall thickness increases the amount of steel in the section and therefore increases the weight per metre.
7. Is chart weight the same as actual supplied weight?
Not necessarily. A chart normally provides theoretical weight, while actual weight can vary according to applicable dimensional and manufacturing tolerances.
8. What information should I provide when requesting a quotation?
Provide size, wall thickness, length, quantity, standard or grade, certification requirements, and delivery location.
9. Can MS square pipe weight be calculated per foot?
Yes. Divide the kg/m value by 3.28084 to obtain an approximate kg/ft value.
10. How can I obtain an MS square pipe quotation?
Contact Sachiya Steel International with your required size, thickness, quantity, standard, and delivery details for a project-specific quotation.
Conclusion
The MS Square Pipe Weight Chart 2026 provides a convenient way to estimate material weight for construction, fabrication, engineering, and procurement requirements. Understanding the relationship between outside dimensions, wall thickness, cross-sectional area, steel density, and total length allows buyers and engineers to prepare more accurate preliminary calculations.
For final purchasing decisions, theoretical calculations should be checked against the applicable standard, dimensional tolerances, documentation, and actual commercial terms. Providing complete technical specifications to the supplier can also help ensure that the quoted material matches the project's requirements.
VISIT OUR WEBSITE - https://steeltube.co.in/ms-square-pipe-weight-chart/
Sachiya Steel International Private Limited
Phone: +91 9769056007
Email: sales@sachiyasteel.com
Website: www.sachiyasteel.com
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