Weight of MS Square Pipe
per Meter (kg/m)
A comprehensive calculator and reference guide for calculating MS square pipe weight per meter using size, thickness, and material density. Includes ready-made weight chart, formula derivation, practical examples, and FAQ for contractors, fabricators, and steel buyers across India.
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Join WhatsApp ChannelDaily UpdatesThis page answers one fundamental question fast: what is the weight of MS square pipe per meter? Whether you are preparing a quote, calculating material requirement for dispatch, or validating an invoice — use the calculator and chart below to get kg/m instantly. All calculations use standard steel density 7850 kg/m³ unless you specify otherwise. The methodology follows IS 4923 hollow section nomenclature and is verified against standard reference data.
What is MS Square Pipe (SHS)?
Structure • Standard • Applications • Common Sizes
An MS square pipe — more formally known as a Square Hollow Section (SHS) — is a structural steel tube with a hollow square cross-section. It is used extensively in building frames, trusses, gates, railings, and fabricated structures where both strength and weight efficiency are required. The defining parameters are:
Design Standard — IS 4923
In India, MS square pipes are manufactured to IS 4923:2016 — the Indian Standard for hollow steel sections. This standard defines the tolerance, corner radius, finish, and testing requirements for both seamless and welded square hollow sections. When you order a "40 × 40 × 2.0" MS square pipe, you are referring to a 40 mm outer dimension with 2.0 mm wall thickness, conforming to this standard.
The standard ensures consistency across suppliers. However, actual weight can vary slightly due to manufacturing tolerance (typically ±2–3%), corner radius effects, and surface coating. For billing-critical applications, always verify weight using the Mill Test Certificate (MTC) or actual measurement.
Common Applications
Light structures: Furniture, display racks, partition frames (smaller sizes: 20×20, 25×25 mm)
General fabrication: Machine bases, control panels, mounting structures (30×30, 40×40, 50×50 mm)
Building & civil: Columns, cross-bracing, roof trusses, gates, railings (65×65, 75×75, 100×100 mm and larger)
Thinner walls (1.2–2.0 mm) are used for light duty; thicker walls (3.2–4.0 mm) for structural and heavy-load applications.
This calculator and chart show theoretical weight based on the nominal dimensions and standard steel density. Real-world weight varies due to: manufacturing tolerance on thickness, corner radius (the square corners are slightly rounded), mill coating or paint, and galvanised finish if GI. For invoicing, load calculations, or structural design — always use the actual measured weight or the MTC value provided by the supplier.
Calculator: MS Square Pipe Weight per Meter
Real-Time Calculation • Size, Thickness & Length Input • Instant kg/m Result
Enter the outer size (B), wall thickness (t), and pipe length (L). The calculator instantly computes the weight per meter and total weight for your specified length. Density defaults to 7850 kg/m³ (standard MS steel) — you can change this for alloy variants.
Formula: How MS Square Pipe Weight per Meter is Calculated
Cross-Section Area • Density Conversion • Shortcut Formula
The weight of a pipe is the product of its material density, the cross-sectional area of the steel (not including the hollow interior), and the length. For a square hollow section, the derivation is straightforward.
Numerical Example
Problem: Find weight per meter of a 40 × 40 × 2.0 mm MS square pipe.
Solution:
Using shortcut formula: kg/m = 0.0314 × 2.0 × (40 − 2.0)
kg/m = 0.0314 × 2.0 × 38 = 2.39 kg/m
For a 6 m length:
Total = 2.39 kg/m × 6 m = 14.34 kg
Why the Formula Works
The formula subtracts the hollow inner area from the outer area to find the volume of steel material. The 10⁻⁶ factor converts from mm³ to m³. The 7850 kg/m³ density is then applied to get the final weight.
The shortcut (0.0314 constant) pre-multiplies these values: (7850 × 4 × 10⁻⁶) = 0.0314. This makes hand calculation fast and reliable in the field.
Steel fabricators and suppliers use this formula or pre-calculated weight charts daily. The formula is reliable for estimation, quotation, and material planning. For precision work — such as bridge design or load-bearing calculations — consult structural engineering references and use certified mill data.
Weight Chart: MS Square Pipe per Meter (kg/m)
Ready Reference • Common Sizes • Typical Applications • 6-Meter Standard Length
Below is a ready reference chart for the most commonly used MS square pipe sizes and thicknesses. All values are calculated using the formula above with standard steel density 7850 kg/m³. Use this chart for instant lookup during quotation, project planning, and load estimation.
| Outer Size (mm) | Thickness (mm) | Weight (kg/m) | Weight for 6 m (kg) | Typical Application |
|---|
Find your pipe size (e.g., 40 × 40) and thickness (e.g., 2.0 mm) in the chart. Read across to find kg/m. Multiply by your actual length to get total weight. For standard 6-meter stock length, the "6m weight" column is provided for convenience. Intermediate sizes not listed can be calculated using the formula above or with the calculator.
Practical Examples: Real-World Use Cases
Quotation • Project Estimation • Billing • Dispatch
Case 1: Fabricator Quoting a Gate Frame
Requirement: Gate frame using 50×50×3.2 mm MS square pipe, total 30 m length.
Calculation: From chart: 50×50×3.2 = 4.71 kg/m
Total = 4.71 × 30 = 141.3 kg
Use case: Quote steel cost to client, plan dispatch schedule.
Case 2: Contractor Validating Invoice
Invoice shows: 40×40×2.0, 50 pieces, 1 m each
Calculation: 40×40×2.0 = 2.39 kg/m (from chart)
Total = 2.39 × 50 × 1 = 119.5 kg
Use case: Cross-check billed weight, ensure accuracy.
Case 3: Project Weight Planning
Requirement: Truss using 65×65×3.2 mm, quantity 8 pieces, 4 m each
Calculation: 65×65×3.2 = 7.62 kg/m
Total = 7.62 × 8 × 4 = 243.8 kg
Use case: Plan transportation, lifting equipment, storage requirements.
FAQ: MS Square Pipe Weight — Most Asked Questions
Formula • Applications • Billing • Standards • Material Variations
• Bureau of Indian Standards (BIS) — IS 4923:2016 Specification
• Ministry of Steel, Government of India — Industry standards and certifications
• World Steel Association — Global hollow section standards reference
Vishwageeta Ispat — Raipur, Chhattisgarh
Vishwageeta Ispat is Raipur's leading supplier of MS square pipes (SHS), MS angles (IS 808), ISMB I-beams, ISMC channels, round pipes, GI pipes, and all structural steel sections. We supply IS 4923:2016 certified MS square pipe in all standard sizes — 20×20 through 150×150 mm with thicknesses from 1.2 mm to 6.0 mm. Stock always available in 6-meter and custom-cut lengths. Mill-linked, competitive rates. Fast dispatch. Full certification and MTC on all orders.
Need a quote on MS square pipe or any other structural section? Contact our sales team today — we respond with current pricing and availability within the same working day.