Steel Beam Base Cost — Per Kilogram
ISMB beam prices in Mumbai (June 2026 indicative rates):
• ISMB 100 to 200 — ₹62 to ₹68 per kg, ex-yard
• ISMB 250 to 400 — ₹60 to ₹66 per kg, ex-yard
• ISMB 450 to 600 — ₹58 to ₹64 per kg, ex-yard
Add GST at 18%. Final landed cost depends on quantity, brand (SAIL / Jindal / JSW), and prevailing futures market. Contact us for a same-day quote.
Fabrication and Erection
On top of the raw beam cost, factor:
• Cutting and drilling — ₹6 to ₹10 per kg
• Welding and connection plates — ₹8 to ₹12 per kg
• Anti-corrosion paint (primer + 2 coats) — ₹15 to ₹25 per kg
• Hot-dip galvanizing (optional, recommended for coastal Mumbai) — ₹20 to ₹28 per kg
• Transport and erection — ₹8 to ₹15 per kg depending on site access
Total installed cost typically lands between ₹105 and ₹140 per kg.
Example — 4 m Steel Beam for a Living Room
For a typical residential opening of 4 m span carrying a single floor above, an ISMB 200 is usually adequate (subject to structural design).
• Section: ISMB 200 @ 25.4 kg/m × 4.5 m (including bearing) = 114 kg
• Base steel: 114 × ₹65 = ₹7,410
• Fab + paint + erection: 114 × ₹45 = ₹5,130
• Total installed cost ≈ ₹12,500 to ₹14,000 + GST
Compare this against a 230 × 600 mm RCC beam at ~₹18,000 to ₹22,000 with formwork, curing time and finish work — and the steel beam is usually competitive on cost, much faster to install, and gives a thinner profile.
When Steel Beats RCC for a House
Steel beams make most economic sense when you need:
• A large clear span (above 5 m) without intermediate columns
• A thin ceiling profile to maximise floor-to-floor height
• Fast turnaround — steel installs in hours; RCC needs 21 days of curing
• Beam-on-beam transfers for cantilevers or projections
FAQ
What is the price of ISMB 200 in Mumbai?
ISMB 200 retails at approximately ₹62 to ₹68 per kg ex-yard in Mumbai (June 2026 indicative). Prices fluctuate with the steel futures market — request a current quote for actual rates.
Is a steel beam cheaper than an RCC beam?
For spans above 4 m, installed steel-beam cost is typically within 10% of equivalent RCC and can be cheaper once you account for the lost rental time during 21-day RCC curing.
Do steel beams need fireproofing in a house?
For G+2 residential construction, IS code typically does not mandate fire-rating on exposed steel. For taller or commercial use, intumescent paint or vermiculite cladding is required.
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