📊 Basic Information
StandardASTM, AISI, GB, JIS, DIN, BS
CertificationISO, RoHS, IBR
SurfaceGalvanized
TechniqueHot Rolled
Thickness0.13-1.0/Bwg/AWG
Zinc Coating30-275G/M2
Weight3-5 Tons
HS Code72104900
OriginChina
Capacity50,000 Tons/Month
🏠 Product Description
Roofing Sheet is a plain carbon steel sheet coated in a galvanizing process that applies a barrier of zinc to insulate it from the elements. Most of the corrugated roofing and siding products seen today are made with a galvanized finish. It is widely used for commercial, agricultural, and industrial purposes, and is now recognized as an excellent form of residential roofing.
Key Advantages:
A normal steel sheet will rust almost immediately, but galvanizing provides long-term protection. This galvanized, electro-coated, hot-dipped process produces a silvery look or spangled finish, ideal for industrial metal siding, roofing, and decking panels.
| Feature |
Details |
| Thick | 0.13-1.0 / BWG / AWG |
| Width Before Corrugated | 762-1200 mm |
| Width After Corrugated | 600-1000 mm |
| Zinc Coating | 30-275G/M2 |
| Hardness | Soft hard (HRB60), Medium hard (HRB60-85), Full hard (HRB85-95) |
| Surface Structure | Regular, Minimal, Zero, Big Spangle |
| Surface Treatment | Chromated/Non-Chromated, Oiled/Non-oiled, Skin pass |
| Package |
3 layers of packing: kraft paper inside, water plastic film in the middle, and GI steel sheet outside, secured by steel strips with locks. |
| Loading Port |
Tianjin / Qingdao / Shanghai Port |
| Monthly Output |
10,000 Tons |
❓ Frequently Asked Questions
What are the common sizes available for GI Roofing Sheets?
Common sizes include 762mm to 665mm (9 waves), 914mm to 750mm (11 waves), and 1000mm to 890/900mm (12 or 14 waves) after corrugation.
What level of zinc coating is applied?
The zinc coating ranges from 30 to 275G/M2, depending on the specific requirements and environment.
How is the product packaged for export?
We use a 3-layer export standard package consisting of kraft paper, water-resistant plastic film, and an outer GI steel sheet secured with steel strips.
What applications are these roofing sheets suitable for?
They are ideal for commercial, agricultural, and industrial buildings, as well as residential roofing, ship plates, and container plates.
Do you support third-party inspections?
Yes, we accept third-party inspections from organizations such as SGS, BV, CE, COC, and AI to ensure quality assurance.
What is the monthly production capacity?
Our monthly production capacity for these roofing sheets is approximately 10,000 to 50,000 tons per month.