Secondary GI Sheet Supplier Mumbai | Budget Galvanized Sheets IS 277 at Discount – Aero Enterprises, Vasai East
Technical Profile
Aero Enterprises supplies secondary GI sheets (second quality galvanized iron sheets) in Mumbai at 15-20% discount versus prime material. Secondary galvanized sheets have minor cosmetic imperfections — slight coating variations, small surface marks, edge irregularities — but provide the same zinc coating corrosion protection with a typical 10-12 year lifespan. We stock thicknesses from 0.4mm to 1.2mm in standard 8x4 ft size with 80-120 GSM zinc coating. Ideal for warehouse sheds, industrial roofing, agricultural buildings, temporary structures, storage facilities, poultry sheds, and applications where surface appearance is secondary to rust protection and cost savings. Same-day dispatch for Mumbai contractors with transparent quality disclosure.
“15-20% cheaper than prime GI - same corrosion protection, minor cosmetic marks.”
Secondary GI sheets (also called second quality, off-grade, or commercial seconds) are galvanized iron sheets that do not meet prime quality visual standards due to minor cosmetic defects from the galvanizing process or handling.
Universal GST HSN for Secondary Galvanized Iron Sheets products in India.
Daily revised prices based on TATA/JSW market indices.
What are Secondary GI Sheets?
Secondary GI sheets (also called second quality, off-grade, or commercial seconds) are galvanized iron sheets that do not meet prime quality visual standards due to minor cosmetic defects from the galvanizing process or handling. Common imperfections include: uneven zinc spangle distribution, slight coating thickness variations, small bare spots or thin coating areas (still above minimum standard), surface marks or scratches, edge irregularities, slight discoloration, or storage marks. Importantly, secondary GI sheets maintain adequate zinc coating — typically 80-120 GSM total coating — providing 10-12 year rust-free life in normal environments. The base steel structural strength and load-bearing capacity remain equivalent to prime material. Not recommended for: premium residential roofing visible from street, coastal areas requiring 180-275 GSM, architectural cladding, export projects requiring strict MTC, or high-end commercial buildings. For warehouse roofing, sheds, agricultural buildings, fencing, and budget construction, secondary GI sheets offer 15-20% cost savings with no compromise on functional rust protection.
Secondary GI Sheet Weight Reference — 8x4 ft
| Thickness (mm) | Weight (KG) | Weight (LBS) |
|---|---|---|
| 0.40 | 9.32 | 20.55 |
| 0.50 | 11.65 | 25.68 |
| 0.60 | 13.98 | 30.82 |
| 0.80 | 18.64 | 41.10 |
| 1.00 | 23.30 | 51.37 |
| 1.20 | 27.96 | 61.64 |
Industrial Applications
Secondary vs Prime GI Sheet — What is the Difference?
Secondary GI sheets are 15-20% cheaper than prime with 80-120 GSM zinc coating versus prime's consistent 120-275 GSM. The base steel strength and functional corrosion protection are fully intact — secondary GI gives 10-12 years rust-free life vs 12-15 years for prime 120 GSM. The difference is cosmetic: uneven spangle, small surface marks, slight coating variations. Choose secondary for warehouse roofing, sheds, agricultural buildings, fencing, and budget construction where appearance is not critical. Choose prime for coastal areas, visible residential roofing, architectural cladding, and projects requiring mill test certificates with exact coating weight specifications.
Get Material Grade AdviceSecondary GI Sheet Price in Mumbai
Secondary GI sheet prices in Mumbai are 15-20% lower than prime material. As of May 2026, approximate prices are ₹48,000 per metric ton (vs ₹62,000 for prime). Per-sheet pricing: 0.5mm — ₹750/sheet (vs ₹850 prime), 0.8mm — ₹1,150/sheet (vs ₹1,350 prime). Pricing varies based on coating condition and thickness availability. For large roofing projects (1000+ sq ft), the 15-20% savings can reduce costs by ₹15,000-30,000. Contact Aero Enterprises at +91 8459121717 for today's secondary GI sheet price with available thicknesses, coating condition photos, and contractor bulk rates for 100+ sheet orders.
Secondary GI Sheet Pricing — How it Tracks Prime
Secondary GI sheet prices in Mumbai move with prime material — when JSW and TATA revise base HR coil prices monthly, secondary prices adjust proportionally. The 15-20% discount over prime is consistent regardless of market level. Secondary stock availability fluctuates based on mill production cycles — call for current stock and condition grading before placing large orders.
Secondary GI Sheet HSN Code and GST Rate
HSN code for Secondary GI Sheet (off-grade galvanized iron plain sheet) is 72104900 — flat-rolled products of iron or non-alloy steel, width 600mm or more, plated or coated with zinc, not corrugated. GST rate is 18%. Secondary material carries the same HSN classification as prime GI sheet. All Aero Enterprises invoices include HSN code, GST breakup, and quality grade disclosure.
Material Integrity
Pan-India Supply
Aero Enterprises delivers mill-certified material from Unit II Dhumal Nagar across Mumbai, Maharashtra, and Pan-India via our logistics network.
View All Delivery Zones & QuotesRelated Products
View AllTechnical Procurement Guide: sheet metal laser cutting complete guide
Master the procurement variables for Secondary Galvanized Iron Sheets (Secondary GI Sheet). Review our engineering team's deep dive into cutting complete guide.
Read Technical GuideTechnical Q&A
Verified Procurement Intelligence