GI Roofing Steel Sheet common size as follows
1) 762mm to 665mm(after corrugated)and 9 waves
2) 914mm to 750mm(after corrugated)and 11 waves
3) 1000mm to 890 or 900mm(after corrugated)and 12 or 14 waves
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 and for many years past are made with a galvanized finish. It is most commonly used for commercial, agricultural, and industrial purposes, however, it is now also being recognized as an excellent form of residential roofing.
GI Roofing Steel Sheet advantages compared with normal one A normal steel sheet will rust almost immediately, but galvanizing will protect the steel. This galvanized, eletro-coated, hot dipped process produces a silvery look or spangled finish. As a standard, several of our industrial metal siding, metal roofing, metal decking, corrugated metal panels and accessories are made in galvanized steel.
| Product | Corrugated Roofing Sheet |
| Base Material | Hot dipped galvanized steel sheet
Hot dipped galvalume steel sheet |
| Material Grade | CGCC, SGCC, SGCH, G350,G450,G550, DX51D+Z, DX51D+AZ, etc |
| Thickness | 0.12-0.8mm |
| Width | 750-1250mm (before corrugation)
600-1100mm (after corrugation) |
| Length | 1000-6000mm or as require |
| Tolerance | Thickness: +/-0.02mm
Width: +/-2mm Length: +/-2mm |
| Coating Type | Galvanized, Galvalume, Pre painted coating (PE, SMP, HDP, PVDF) |
| Zinc-coating | 60g/m²-275g/m² (G30-G60) |
| Technique | Raw material: Hot rolled steel coil → Cold rolled → hot dipped galvanized → corrugated |
| Terms | Raw material width 762mm, after corrugated width 665mm: 9 waves Raw material width 914mm, after corrugated width 800mm: 11 waves
Raw material width 1000mm, after corrugated 890mm or 900mm: 12-14 waves |
| Feature | Roofing Steel Sheet have excellent performance of decoration, corrosion resistance etc. |
| Export Package | Waterproof paper, galvanized steel covered and steel strip packed |
| Steel Grades | Chemical Composition% | | Tensile Strength
(MPa) | Yield Strength(MPa) |
| C%< | Si%< | Mn%< | P%< | S%< | Alt< |
| SGCC, DX51D+Z | 0.07 | 0.03 | 0.5 | 0.025 | 0.025 | 0.02 | Cu<0.10, Ni<0.08, Cr<0.10, As<0.05, Sn<0.05 | 270-500 | 140-280 |
| DX52D+Z | 0.06 | 0.03 | 0.45 | 0.025 | 0.025 | 0.02 | 270-420 | 140-300 |
| DX53D+Z | 0.03 | 0.03 | 0.4 | 0.020 | 0.020 | 0.02 | 270-380 | 140-260 |
| S220GD+Z | 0.17 | 0.3 | 1.0 | 0.035 | 0.300 | 0.02 | 300-440 | >220 |
| S250GD+Z | 0.17 | 0.3 | 1.0 | 0.035 | 0.300 | 0.02 | 330-470 | >250 |
| S350GD+Z | 0.2 | 0.55 | 1.6 | 0.035 | 0.300 | 0.02 | 420-560 | >350 |
| Grade | Yield Strength MPa | Tensile Strength MPa not less than | Elongation after breaking b(l=80mm, b=20mm) % not less than Nominal thickness mm | rvalue is not less than | nvalue is not less than |
| | 0.70- | 1.0- | ≥1.6 |
| DC01(St12) | 130~260 | 270 | 28 | 30 | 32 | 34 | | - |
| DC03(St13) | 120~240 | 270 | 32 | 34 | 35 | 36 | - | - |
| DC04(St14, St15) | 120~210 | 270 | 36 | 38 | 39 | 40 | 1.5 | 0.18 |
| DC05(BSC2) | 110~190 | 260 | 38 | 39 | 40 | 41 | 1.8 | 0.2 |
| DC06(St16,St14-T, BSC3) | 100~180 | 250 | 39 | 40 | 41 | 42 | 2 | 0.22 |
| Grade | Yield Strength MPa no greater than | Tensile Strength MPa not less than | Elongation after breaking b(Lo=50mm, b=25mm) % not less than Nominal thickness mm |
| | 0.25- | 0.40- | 0.60- | 1.0~ | ≥1.6 |
| SPCC | - | 270 | 30 | 32 | 34 | 36 | 37 | 38 |
| SPCD | - | 270 | 32 | 34 | 36 | 38 | 39 | 40 |
| SPCE, SPCEN | 210 | 270 | 34 | 36 | 38 | 40 | 41 | 42 |
| Grade | Chemical Component % |
| C | Mn | P | s | Alta | Tib |
| DC01(St12) | C0.10 | ≤0.50 | ≤0.035 | ≤0.025 | ≥0.020 | - |
| DC03(St13) | ≤0.08 | ≤0.45 | ≤0.030 | ≤0.025 | ≥0.020 | - |
| DC04(St14,St 15) | ≤0.08 | ≤0.40 | ≤0.025 | ≤0.020 | ≥0.020 | - |
| DC05(BSC2) | ≤0.008 | ≤0.30 | ≤0.020 | ≤0.020 | ≥0.015 | ≤0.20 |
| DC06(St16,SH4-T,BSC3) | ≤0.006 | ≤0.30 | ≤0.020 | ≤0.020 | ≥0.015 | ≤0.20 |
| SPCC | ≤0.12 | ≤0.50 | ≤0035 | ≤0.025 | ≥0,020 | |
| SPCD | ≤0.10 | ≤0.45 | ≤0.030 | ≤0.025 | ≥0.020 | |
| SPCE. SPCEN | ≤008 | U0.40 | W0.025 | ≤0.020 | ≥0,020 | |
| Alt greater than or equal to 0.015 when C is less than or equal to 0.01 for all grades |
Packaging And Transportation
We offer different modes of transport depending on the customer's destination: rail transport and ship transport, etc. The packaging is: export sea worthy package + water proof paper + wooden pallet or as customers' requirements. The Shipping Mark shall consist of: Trade mark, Seller's name, Product name, Applicable standards,Specifications, Package No., Contract No., Heat No., Production date, Weighing method, Net weight, Gross Weight, Consignee and Protection symbols, etc.
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