ISMB Beams
ISMB (Indian Standard Medium Weight Beam) is the most widely used hot-rolled I-section for structural framing in Indian construction. SIIPL stocks the full ISMB range — 100 to 600 mm — from SAIL, RINL, JSPL, JSW and Jindal Steel at our Kalamboli stockyard for ready dispatch across Mumbai and pan-India, coordinated from our Chembur head office.
ISMB Beams (Indian Standard Medium Weight Beams) — Mumbai Suppliers
Standard
IS 808 (dimensions) · IS 2062 E250 / E350 (material)
Grades Supplied
IS 2062 E250 BR · IS 2062 E350 · Fe 410 W
Sizes & Weight Chart
| Designation | Section (mm) | Unit Weight (kg/m) |
|---|---|---|
| ISMB 100 | 100 × 75 | 11.5 |
| ISMB 125 | 125 × 75 | 13.3 |
| ISMB 150 | 150 × 80 | 14.9 |
| ISMB 175 | 175 × 85 | 19.3 |
| ISMB 200 | 200 × 100 | 25.4 |
| ISMB 225 | 225 × 110 | 31.2 |
| ISMB 250 | 250 × 125 | 37.3 |
| ISMB 300 | 300 × 140 | 44.2 |
| ISMB 350 | 350 × 140 | 52.4 |
| ISMB 400 | 400 × 140 | 61.6 |
| ISMB 450 | 450 × 150 | 72.4 |
| ISMB 500 | 500 × 180 | 86.9 |
| ISMB 550 | 550 × 190 | 104.0 |
| ISMB 600 | 600 × 210 | 122.6 |
Reference sizes and approximate weights only. Confirm the exact section, mill specification, tolerances and current availability before ordering. Chart weights do not establish the billed weight.
Ordering ISMB Beams
- Size & quantity
- Exact section designation, required length and piece quantity for each size.
- Grade & approved make
- Specify the material standard and grade for ISMB Beams, plus any project-approved mill or make. Substitutions need your approval.
- Delivery & finish
- Provide the delivery city or destination country, required date, and any cutting, galvanizing, packing or inspection requirements.
- Certificates & billing
- State your mill test certificate and heat-number requirements. Ask for the weight billing basis, taxes, freight and any processing charges in the quotation.
Applications
- Primary columns and beams in industrial sheds and warehouses
- Mezzanine floors and platform structures
- Bridge girders and infrastructure projects
- Crane gantry beams and heavy load-bearing frames
- High-rise building primary framing
FAQ
What does ISMB stand for?
ISMB stands for Indian Standard Medium Weight Beam — a hot-rolled I-section defined by IS 808 and used as the default beam profile in Indian structural steel construction.
What length should I specify for an ISMB beam?
Specify your required length and piece quantity for each designation. Confirm available mill lengths and any cut-to-length requirement with SIIPL before ordering; dispatch is coordinated from the Kalamboli stockyard.
What is the difference between ISMB and NPB / WPB?
ISMB follows the Indian standard (IS 808) with tapered flanges. NPB and WPB are parallel-flange European-standard beams (EN 10025) — narrower flange for NPB, wider for WPB — offering better load-to-weight ratios for modern designs.
How do I get a price for ISMB Beams?
Send the exact size, grade, approved make, quantity and delivery location. Request a dated quotation with validity, taxes, freight and processing charges clearly stated; chart weights are not a price or stock commitment.
Are all listed ISMB Beams sizes available immediately?
The size chart is a reference, not a live inventory feed. Confirm the requested size, grade, make, available lengths, minimum order quantity and dispatch schedule with SIIPL before placing an order.
What should I confirm about mill certificates and billed weight?
Include your mill test certificate, material marking and heat-number traceability requirements in the enquiry. Agree whether billing uses actual weighed weight or another stated basis, and request the relevant weight records before order confirmation.
Can I enquire about exporting ISMB Beams from India?
Yes. Share the destination country and port, exact product standard and grade, quantity, delivery schedule, packing and inspection requirements. SIIPL reviews export requirements individually; destination compliance and commercial terms must be agreed for the order.