Download the Latest GI Steel Roofing Sheet Specifications and Dimensions.
ASTM A653 GI Steel Roofing Sheet | Heavy-Duty Galvanized Roof Panels for Industrial, Warehouse & Factory Buildings
| Item | Specification | Item | Specification |
| Material Standard | ASTM A653 / ASTM A653M | Steel Grade | CS Type A / CS Type B / SS Grade 33–80 |
| Base Material | Low Carbon Steel | Yield Strength | ≥ 230–550 MPa (Grade Optional) |
| Thickness | 0.25–1.20 mm | Width | 600–1250 mm (Effective Width Customized) |
| Length | 1–12 m, or Customized | Zinc Coating | Z60–Z275 (g/m²) |
| Coating Type | Hot-Dip Galvanized (GI) | Surface Finish | Regular Spangle / Zero Spangle |
| Profile Type | Corrugated / Trapezoidal / Ribbed | Dimensional Tolerance | Conforms to ASTM A6 / ASTM A653 |
| Applications | Industrial roofs, warehouses, workshops, residential roofing | Processing Service | Cutting, profiling, punching |
| Quality Certification | ISO 9001, SGS / BV Third-Party Inspection | Packing | Standard Seaworthy Export Packing |
Technical Data
ASTM A653 GI Steel Roofing Sheet Chemical Composition
| Element | C (Carbon) | Mn (Manganese) | P (Phosphorus) | S (Sulfur) | Al (Aluminum) | Fe |
| Content (%) | ≤ 0.15 | ≤ 0.60 | ≤ 0.035 | ≤ 0.035 | 0.02–0.10 | Balance |
Additional Notes:
Low Carbon Steel Base: Low carbon content ensures good formability and molding performance.
Aluminum (Al): Used for deoxidation, improving the adhesion of the zinc coating.
Iron (Fe): Base metal, largest component.
Chemical composition varies with steel grade (CS / FS / SS), the actual composition is subject to the Mill Test Certificate (MTC).
ASTM A653 GI Steel Roofing Sheet Mechanical Property
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
| CS Type B | ≥ 230 | ≥ 310 | ≥ 20 |
| FS Type A | ≥ 240 | ≥ 350 | ≥ 18 |
| FS Type B | ≥ 275 | ≥ 380 | ≥ 16 |
| SS Grade 33 | ≥ 230 | 310–430 | ≥ 20 |
| SS Grade 50 | ≥ 345 | ≥ 450 | ≥ 16 |
ASTM A653 GI Steel Roofing Sheet Sizes
| Available Sizes | |
| Item | Specification |
| Thickness | 0.25 – 1.20 mm |
| Coil Width | 600 – 1250 mm |
| Effective Width | 750 / 762 / 836 / 914 / 1000 mm (Customized) |
| Length | 1 – 12 m or Customized |
| Zinc Coating | Z60 / Z80 / Z120 / Z180 / Z275 |
| Profile Type | Corrugated / Trapezoidal / Ribbed |
| Surface Finish | Regular Spangle / Zero Spangle |
| Tolerance | As per ASTM A653 / ASTM A6 |
| Profile Type | Thickness (mm) | Effective Width (mm) | Length (m) |
| Corrugated | 0.30 – 0.60 | 762 / 836 / 914 | 2 – 11.8 |
| Trapezoidal | 0.35 – 0.80 | 840 / 1000 | 2 – 12 |
| Ribbed / Standing Seam | 0.40 – 1.00 | Customized | Customized |
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ASTM A653 galvanized steel roof sheets have become integral components in the building and manufacturing industries for showing its durability, strength and affordability.
Main Applications
Industrial Buildings – Factories and manufacturing plants, workshops
Warehouses and Logistical Centers – Storage, distribution
Commercial Buildings – Shopping malls, office buildings, car parks
Residential Roofing: House roofs, villas, low-rise residential building roofs
Agricultural buildings such as farmhouses, shelter for animals
Temporary Structures – Office-space, prefab homes, construction field sheds
Secondary Applications
Wall cladding & Side paneling
Canopies and Car Ports
Shelters and Patio Covers
Suitable Environments
Typical urban areas
Industrial Areas
Regions of high humidity (for zinc-coated products with the thickness class Z180–Z275)
1) Branch Office - Spanish-speaking support, customs clearance assistance, etc.
2) Over 5,000 tons of stock in stock, with a wide variety of sizes
3) Inspected by authoritative organizations such as CCIC, SGS, BV, and TUV, with standard seaworthy packaging
Packing
ASTM A653 galvalume steel roof sheets are packed to protect the sheets during handling, shipping, and long distance export.Packing Inner:
Steel sheets stacked and aligned
Waterproof paper or plastic film as moisture barrier
Outer Packing:
Tighten steel banding to bundler
Wooden pallets or steel frames (optional)
Prevent edge damage with corner protector
Export Packing:
Normal seaworthy export packing
Container and bulk shipment are available
Packing can be tailored to customers' needs.
Delivery
Delivery Time:
Standard sizes: 7-15 days after confirmation of order
Customized profiles or sizes 15-25 days.
Shipping Methods:
20GP / 40GP / 40HQ containers
Break bulk shipment for oversized roofing sheets
Loading Method:
Horizontal stacking with protection
Fasten securely to prevent shifting during transpor
Stable cooperation with shipping companies such as MSK, MSC, COSCO efficiently logistics service chain, logistics service chain are we to your satisfaction.
We follow the standards of quality management system ISO9001 in all procedure, and have strict control from packaging material purchase to transport vehicle scheduling. This guarantees the H-beams from the factory all the way to the project site, helping you build on a solid foundation for a trouble free project!
Q1: What is galvanized steel roofing sheet of ASTM A653?
A hot-dip zinc coated steel sheet based on the ASTM A653/A653M specification. It has excellent rust resistance due to the galvanized coating, high strength, and can be used for industrial, commercial and residential roof.
Q2: What are the available sizes, thicknesses and galvanizing thicknesses?
Thickness:0.25-1.20 mm, width:600-1250 mm, length:1-12 m or customized. Zinc coatings: Z60, Z80, Z120, Z180, Z275 g/m2, we recommend to use heavier zinc coating for coastal or high humidity environments.
Q3: What kinds of steel grades and profiles can you provide?
Types - CS Type B, FS Type A/B, SS Grade 33/50. Profiles: trapezoidal, corrugated, IBR, box rib, standing seam. OEM customization are available according to drawings or samples.
Q4: What is the usage scope?
Because of its durability and resistance to wear and tear, it is widely used in Industrial buildings, obraches commercial and residential roofs, Agricultural barns, Temporary buildings and more, and now, your turn to Build Better with Qbro.
Contact Details
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
Phone
Hours
Monday-Sunday: 24-hour Service
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