MS Pipe Size &
Weight Chart
in Kilograms
The most comprehensive mild steel pipe weight chart in kg per metre — covering all standard ERW pipe sizes from ½ inch to 12 inch nominal bore, light, medium and heavy classes, square hollow sections, and rectangular hollow sections. Used by contractors, fabricators, and project engineers across Central India.
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Send Enquiry Fill the contact form Join WhatsApp Channel Daily rate updatesThis page gives you the complete MS pipe weight chart in kg per metre for every standard size of mild steel (MS) ERW pipe as per IS 1239 (Part 1) — India's primary specification for steel tubes for structural and general engineering purposes. Whether you're estimating freight cost, preparing a BOQ, or calculating structural load, this reference will give you accurate pipe weight data for Light (L), Medium (M), and Heavy (H) class pipes from ½ inch NB to 12 inch NB, plus square and rectangular hollow section (SHS/RHS) weights. All weights are in kilograms per metre (kg/m) and checked against IS standard wall thickness data.
- What Is an MS Pipe? — Basics, IS standard, ERW vs seamless
- MS Pipe Weight Chart in KG/m — ½" to 12" NB, Light / Medium / Heavy
- How to Calculate MS Pipe Weight — Formula with examples
- Square Hollow Section (SHS) Weight Chart
- Rectangular Hollow Section (RHS) Weight Chart
- Light vs Medium vs Heavy Class
- Where Each Pipe Class is Used
- Frequently Asked Questions
What Is an MS Pipe? Understanding the Product Before the Chart
Mild Steel Pipe • ERW vs Seamless • IS 1239 & IS 3589
MS pipe stands for Mild Steel pipe — a hollow cylindrical steel section made from low-carbon (mild) steel. It is the most widely used pipe type in India for water supply, gas lines, structural framing, industrial fabrication, scaffolding, fencing, and general engineering work. Knowing the MS pipe weight in kg per metre is essential for freight estimation, structural calculations, and accurate bill of quantities (BOQ) preparation.
ERW Pipe (Electric Resistance Welded)
The most common type of MS pipe in the Indian market. A flat steel strip (skelp) is rolled into a cylindrical shape and the seam is fused using electric current — without any filler material. ERW pipes are available in sizes from ½ inch NB to 24 inch NB and are governed by IS 1239 (Part 1) for sizes up to 6 inches and IS 3589 for larger pipes. The vast majority of construction and structural MS pipe demand in India is met by ERW pipes.
ERW pipes offer excellent dimensional consistency and surface finish. They are cost-effective for standard pressure applications and widely used in water lines, gas distribution, scaffolding, and structural hollow sections.
Seamless Pipe
Manufactured by hot-piercing a solid billet — no weld seam. Seamless MS pipes are stronger, more reliable under high pressure and temperature, and significantly more expensive than ERW pipes. They are used in boilers, high-pressure hydraulic lines, oil and gas pipelines, and power plants.
For general construction, structural, and plumbing applications, ERW pipes are sufficient and cost-effective. For this weight chart reference, all data applies to ERW MS pipes as per IS 1239 / IS 3589 unless otherwise stated.
The pipe size ms pipe weight chart in kg below lists weight in kg per metre (kg/m). To get total weight of a pipe bundle or consignment: multiply the kg/m value by the total pipe length in metres. For example, if a 50mm NB Medium class pipe weighs 4.05 kg/m and you have 500 metres, total weight = 500 × 4.05 = 2,025 kg = 2.025 MT.
MS Pipe Weight Chart in KG Per Metre — IS 1239 Standard Sizes
Light • Medium • Heavy Class • Nominal Bore ½ inch to 12 inch
This is the complete MS pipe weight chart in kg per metre for all standard IS 1239 (Part 1) pipe sizes. The chart covers nominal bore sizes from ½ inch (15 mm NB) to 12 inch (300 mm NB) across all three thickness classes — Light (L), Medium (M), and Heavy (H). Wall thickness data is taken from IS 1239 standard tables. Weights are calculated using the standard steel density of 7.85 g/cm³.
| Nominal Bore (NB) | OD (mm) | Light Class | Medium Class | Heavy Class | |||
|---|---|---|---|---|---|---|---|
| Wall Th. (mm) | Wt (kg/m) | Wall Th. (mm) | Wt (kg/m) | Wall Th. (mm) | Wt (kg/m) | ||
| → Small Bore — ½" to 1½" NB | |||||||
| ½" (15 mm NB) | 21.3 | 2.0 | 0.95 | 2.6 | 1.21 | 3.2 | 1.44 |
| ¾" (20 mm NB) | 26.9 | 2.0 | 1.25 | 2.6 | 1.59 | 3.2 | 1.90 |
| 1" (25 mm NB) | 33.7 | 2.3 | 1.78 | 3.2 | 2.41 | 4.0 | 2.93 |
| 1¼" (32 mm NB) | 42.4 | 2.6 | 2.55 | 3.2 | 3.10 | 4.0 | 3.79 |
| 1½" (40 mm NB) | 48.3 | 2.6 | 2.93 | 3.2 | 3.56 | 4.0 | 4.37 |
| → Medium Bore — 2" to 4" NB | |||||||
| 2" (50 mm NB) | 60.3 | 2.9 | 4.08 | 3.6 | 5.03 | 4.5 | 6.19 |
| 2½" (65 mm NB) | 76.1 | 2.9 | 5.21 | 3.6 | 6.42 | 4.5 | 7.93 |
| 3" (80 mm NB) | 88.9 | 3.2 | 6.76 | 4.0 | 8.36 | 4.8 | 9.90 |
| 3½" (90 mm NB) | 101.6 | 3.2 | 7.77 | 4.0 | 9.63 | 4.8 | 11.43 |
| 4" (100 mm NB) | 114.3 | 3.6 | 9.83 | 4.5 | 12.15 | 5.4 | 14.42 |
| → Large Bore — 5" to 8" NB | |||||||
| 5" (125 mm NB) | 139.7 | 4.0 | 13.42 | 5.0 | 16.60 | 5.4 | 17.88 |
| 6" (150 mm NB) | 165.1 | 4.0 | 15.88 | 5.0 | 19.70 | 5.4 | 21.22 |
| 8" (200 mm NB) | 219.1 | 4.5 | 23.80 | 5.9 | 31.00 | 6.3 | 33.04 |
| → Extra Large Bore — 10" to 12" NB (IS 3589) | |||||||
| 10" (250 mm NB) | 273.0 | 5.0 | 32.90 | 6.3 | 41.26 | 7.8 | 50.81 |
| 12" (300 mm NB) | 323.9 | 5.0 | 39.05 | 6.3 | 49.06 | 7.9 | 61.30 |
The MS pipe weight chart in kg values above are theoretical/nominal weights calculated from standard IS wall thickness dimensions at 7.85 g/cm³ steel density. Actual manufactured pipe weights may vary by ±10% as permitted under IS 1239 tolerance provisions. For freight and procurement contracts, always verify with mill test certificates (MTC) and weigh-bridge receipts for final billing.
How to Calculate MS Pipe Weight in KG
Standard Formula • Worked Examples • OD, ID, Wall Thickness
The theoretical weight of any MS pipe can be calculated using a simple engineering formula based on the pipe's outer diameter, inner diameter, and length. This is the same formula used to generate the weight chart above. Understanding it helps you calculate the weight of any non-standard pipe size or custom wall thickness.
OR
Weight (kg/m) = (π / 4) × (OD² − ID²) × 7850 / 1,000,000
Worked Example 1: 2" NB Medium Class Pipe
Given: OD = 60.3 mm, Wall thickness (Medium) = 3.6 mm
Using formula: Weight = 0.02466 × 3.6 × (60.3 − 3.6)
= 0.02466 × 3.6 × 56.7
= 0.02466 × 204.12
= 5.03 kg/m ✓
This matches the 2" NB Medium Class value in our chart above. The formula is accurate to within ±0.5% for all standard sizes.
Worked Example 2: 4" NB Heavy Class Pipe
Given: OD = 114.3 mm, Wall thickness (Heavy) = 5.4 mm
Using formula: Weight = 0.02466 × 5.4 × (114.3 − 5.4)
= 0.02466 × 5.4 × 108.9
= 0.02466 × 588.06
= 14.50 kg/m ✓
Slight rounding difference from the chart (14.42 kg/m) is due to rounding of intermediate values. For precision, always use at least 4 decimal places.
To convert kg per metre to kg per foot: multiply by 0.3048.
Example: A 3" NB Medium class MS pipe at 8.36 kg/m = 8.36 × 0.3048 = 2.548 kg/foot.
To get weight per 6-metre pipe length: 8.36 × 6 = 50.16 kg per pipe.
Square Hollow Section (SHS) — MS Pipe Weight Chart in KG
Square Tube Weight Per Metre • IS 4923 Standard
Square hollow sections (SHS) — commonly called square MS pipes or square tubes — are widely used in gates, grills, fabricated structures, furniture frames, signage supports, and light industrial structures. The standard governing them in India is IS 4923. Weights below are in kg per metre.
| Size (mm × mm) | Wall Th. 1.6mm (kg/m) | Wall Th. 2.0mm (kg/m) | Wall Th. 2.5mm (kg/m) | Wall Th. 3.0mm (kg/m) | Wall Th. 3.2mm (kg/m) | Wall Th. 4.0mm (kg/m) | Wall Th. 5.0mm (kg/m) |
|---|---|---|---|---|---|---|---|
| 20 × 20 | 0.87 | 1.07 | 1.29 | — | — | — | — |
| 25 × 25 | 1.11 | 1.36 | 1.66 | 1.93 | — | — | — |
| 32 × 32 | 1.45 | 1.78 | 2.19 | 2.57 | 2.72 | — | — |
| 38 × 38 | 1.74 | 2.14 | 2.63 | 3.10 | 3.29 | — | — |
| 40 × 40 | 1.83 | 2.26 | 2.78 | 3.28 | 3.48 | 4.20 | — |
| 50 × 50 | 2.31 | 2.86 | 3.53 | 4.18 | 4.44 | 5.45 | 6.56 |
| 60 × 60 | 2.79 | 3.46 | 4.28 | 5.08 | 5.40 | 6.71 | 8.15 |
| 75 × 75 | 3.51 | 4.36 | 5.40 | 6.43 | 6.84 | 8.57 | 10.50 |
| 100 × 100 | 4.71 | 5.86 | 7.29 | 8.72 | 9.28 | 11.70 | 14.40 |
| 125 × 125 | — | 7.36 | 9.18 | 11.00 | 11.70 | 14.90 | 18.40 |
| 150 × 150 | — | — | 11.10 | 13.30 | 14.10 | 18.00 | 22.30 |
Rectangular Hollow Section (RHS) — MS Pipe Weight Chart in KG
Rectangular Tube Weight Per Metre • IS 4923 Standard
Rectangular hollow sections (RHS) — also called rectangular MS pipes or MS rectangular tubes — are the workhorse of the fabrication industry. They are widely used in canopy structures, trolleys, racking systems, trailer bodies, industrial shelving, agricultural equipment, and light steel construction. All weights are in kg per metre.
| Size (mm × mm) | Wall Th. 1.6mm (kg/m) | Wall Th. 2.0mm (kg/m) | Wall Th. 2.5mm (kg/m) | Wall Th. 3.0mm (kg/m) | Wall Th. 3.2mm (kg/m) | Wall Th. 4.0mm (kg/m) | Wall Th. 5.0mm (kg/m) |
|---|---|---|---|---|---|---|---|
| 40 × 20 | 1.45 | 1.78 | 2.17 | 2.54 | — | — | — |
| 50 × 25 | 1.83 | 2.26 | 2.78 | 3.28 | 3.48 | — | — |
| 60 × 30 | 2.19 | 2.72 | 3.36 | 3.97 | 4.21 | — | — |
| 60 × 40 | 2.41 | 2.99 | 3.70 | 4.38 | 4.65 | 5.69 | — |
| 75 × 50 | 3.07 | 3.81 | 4.74 | 5.63 | 5.99 | 7.40 | 8.97 |
| 80 × 40 | 2.87 | 3.57 | 4.42 | 5.25 | 5.59 | 6.88 | 8.36 |
| 100 × 50 | 3.63 | 4.52 | 5.63 | 6.72 | 7.16 | 8.90 | 10.90 |
| 100 × 60 | 3.87 | 4.82 | 6.01 | 7.17 | 7.64 | 9.53 | 11.70 |
| 120 × 60 | 4.47 | 5.57 | 6.94 | 8.30 | 8.85 | 11.10 | 13.70 |
| 150 × 75 | 5.57 | 6.96 | 8.69 | 10.40 | 11.10 | 13.90 | 17.20 |
| 150 × 100 | 6.05 | 7.57 | 9.47 | 11.30 | 12.10 | 15.20 | 18.90 |
| 200 × 100 | — | 9.57 | 11.90 | 14.30 | 15.30 | 19.20 | 24.00 |
Light vs Medium vs Heavy Class MS Pipe: What's the Difference?
IS 1239 Class Definitions • Wall Thickness • Selection Guide
The three classes — Light (L), Medium (M), and Heavy (H) — refer exclusively to the wall thickness of the pipe. The outer diameter (OD) remains the same for all three classes of a given nominal bore size. Only the wall thickness (and therefore the inner bore and the weight) changes. Here's how to choose the right class:
Light Class (L)
Thinnest wall. Lowest weight. Used for applications where strength requirements are minimal and weight/cost savings are priorities. Common applications include fencing, signage support posts, decorative grilles, mild-duty scaffolding, furniture frames, and low-pressure irrigation lines.
Medium Class (M)
Standard wall. The most common class in India. Used across a broad range of applications including plumbing, gas distribution, structural columns and frames, construction scaffolding, industrial pipelines, and general fabrication. Most quotations for "MS pipe" refer to Medium class by default.
Heavy Class (H)
Thickest wall. Highest strength. Used in applications demanding higher pressure rating, greater structural rigidity, or fire protection systems (fire sprinkler mains). Common uses include hydraulic lines, fire-fighting mains, structural columns in heavy load-bearing frames, and mechanical applications.
If the specification sheet does not mention the class, always quote Medium class (M) as the default. For water supply lines, confirm with the plumbing consultant. For structural applications, confirm the wall thickness from the structural drawing. Using Light class where Medium class is required is a common and costly error in project procurement.
Where Each MS Pipe Size & Class Is Used
Industry Applications • Construction, Plumbing, Fabrication, Infrastructure
Knowing the weight of an MS pipe is only half the job. Understanding where each size and class is used helps you stock the right material and give accurate advice to your buyers — contractors, fabricators, builders, and project managers.
Residential Construction
½" to 2" NB Medium class for internal plumbing. 25×25 to 50×50 SHS for window grilles, gates, and railing. 40×20 to 60×40 RHS for door frames, boundary wall tops, and fabricated furniture.
Industrial Fabrication
2" to 6" NB Medium/Heavy for structural columns and supports. 75×75 to 150×150 SHS for equipment bases and machine guards. 100×50 to 200×100 RHS for trolley frames, racking, and mezzanine structures.
General Plumbing
½" to 3" NB Medium class for domestic and commercial water lines. 4" to 8" NB Medium for rising mains and underground distribution. Heavy class for fire-fighting lines and high-pressure water supply in tall buildings.
Infrastructure Projects
6" to 12" NB Heavy class for sewage and drainage mains. 8" to 12" NB for irrigation mains and canal cross-drainage. Large NB pipes (IS 3589) for municipal water supply trunk mains, pump-houses, and water treatment plants.
Agricultural & Rural Use
1½" to 4" NB Light/Medium for borewell casing, pump delivery lines, and drip irrigation mains. 50×25 to 75×50 RHS for greenhouse structures, shade net frames, and cattle shed fabrication.
Fire Fighting Systems
2½" to 6" NB Heavy class as specified by fire consultant. IS 1239 Heavy class pipes are mandatory for most fire sprinkler and hydrant systems. All joints must be flanged or grooved — not threaded — for sizes 3" NB and above in fire systems.
Why Pipe Weight in KG Directly Determines Your Purchase Price
Weight-Based Pricing • MT Cost • How Mills Quote MS Pipe
Unlike TMT bars or structural sections where pricing is quoted per tonne (per MT), MS pipe pricing in India is almost always done per tonne (per MT) at the mill or stockist level — and then converted to a per-piece or per-metre rate for smaller buyers. This means the weight chart is not just a technical reference — it is a pricing tool.
How to Convert MT Price to Per-Metre Rate
Get the per-MT price from your supplier
Example: 2" NB Medium class ERW pipe is quoted at ₹68,000 per MT by your Raipur stockist.
Find weight per metre from this chart
2" NB Medium class = 5.03 kg/m (from the main weight chart above).
Calculate per-metre rate
Per-metre rate = (68,000 ÷ 1000) × 5.03 = 68 × 5.03 = ₹342 per metre.
Calculate per 6-metre pipe price
6 metres × ₹342 = ₹2,052 per pipe (before GST).
The Heavy vs Medium Class Price Trap
A common confusion in procurement: if you buy Heavy class pipe at the same per-MT rate as Medium class, you are getting more steel per metre. But if you specify Medium class and the supplier delivers Light class (without your knowledge), you are being shortchanged — you receive fewer kg per metre for the same per-MT payment.
The only protection: specify the IS class (L/M/H) and the wall thickness in mm in every purchase order. "2 inch MS pipe" without class specification is an open invitation for substitution. Always write: "2" NB IS 1239 Medium class, wall thickness 3.6mm, ERW, IS mark".
At delivery, weigh a sample lot of 10 pipes on a weigh-bridge. Divide by number of metres (number of pipes × 6 metres each). If the result per metre is less than the chart value for the specified class, the pipe is undersized or Light class is supplied instead of Medium.
MS Pipe Weight Chart — Most Asked Questions
FAQ • For Contractors, Fabricators, and Traders
Vishwageeta Ispat
Vishwageeta Ispat is Raipur's trusted iron and steel supplier — stocking TMT bars, MS angles, ISMC channels, I-beams, MS pipes (ERW Light/Medium/Heavy), GI pipes, square and rectangular hollow sections, MS sheets, chequered plates, and more. This MS pipe weight chart is published as a free reference for contractors, project engineers, fabricators, and procurement teams across Chhattisgarh and Central India.
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