Manufacturing Process
Q195 Steel Chemical Composition
|
Element |
Composition (%) (Max) |
Typical Range |
Notes |
|
Carbon (C) |
≤0.12% |
0.06–0.12% |
Low carbon ensures good weldability/formability |
|
Manganese (Mn) |
≤0.50% |
0.25–0.50% |
Improves strength without sacrificing ductility |
|
Silicon (Si) |
≤0.30% |
0.10–0.30% |
Deoxidizer, minor impact on properties |
|
Phosphorus (P) |
≤0.045% |
≤0.040% |
Controlled to avoid brittleness |
|
Sulfur (S) |
≤0.050% |
≤0.040% |
Minimized to prevent hot cracking |
|
Iron (Fe) |
Balance |
~99% |
Primary constituent |
Common Sizes
|
Parameter |
Options |
|
Thickness |
0.3mm – 1.2mm (common: 0.45–0.75mm) |
|
Width |
750mm, 820mm, 1000mm (custom up to 1250mm) |
|
Length |
2m – 12m (customizable) |
|
Profile |
Trapezoidal, sinusoidal, tile-pattern |
|
Coating |
HDG, PPGI, PVC |
Surface treatment
Advantage of Q195 Roofing Sheet
|
Advantage |
Specific Benefits |
|
Cost Efficiency |
▪ Lower material cost (10-15% cheaper than Q235) |
|
Workability |
▪ Cold-formed into complex corrugations (min. bend radius = thickness×15) |
|
Lightweight |
▪ 1/10 the weight of concrete roofs |
|
Corrosion Resistance |
▪ Zinc coating (60g/m²) withstands ≥500h salt spray |
|
Installation Speed |
▪ 5x faster installation than traditional tiles |
|
Thermal Performance |
▪ ≥70% solar reflectance (light colors) |
|
Eco-Friendliness |
▪ 100% recyclable |
|
Low Maintenance |
▪ Damaged sections replaceable |
Application
|
Application Area |
Examples |
|
Industrial Buildings |
Factories producing machinery, electronics, textiles, etc. |
|
Warehouses |
General - purpose, food, raw material warehouses |
|
Agricultural Buildings |
Barns, sheds, greenhouses for livestock, equipment, crops (e.g., chicken coops, vegetable greenhouses) |
|
Low - Rise Residential Buildings |
Single - story houses, add - on structures, especially in rural areas |
|
Temporary Buildings |
Construction site offices, temporary shelters, exhibition booths |
Packing
|
Type |
Description |
Best For |
Load Capacity |
|
Flat Bundles |
Sheets stacked horizontally with edge protectors, strapped with steel/PET bands |
Factory transport, short-distance |
≤2 tons per bundle |
|
Vertical Crates |
Sheets stood on edge in wooden frames, separated by foam spacers |
Export(prevent deformation) |
1-1.5 tons per crate |
|
Palletized |
Stacked on ISO-standard pallets (1200×800mm), shrink-wrapped with corner guards |
Forklift handling, warehouse storage |
≤1 ton per pallet |
|
Roll Packing |
Flexible roofing (e.g., aluminum underlay) rolled around cardboard cores |
Long coiled sheets |
≤800kg per roll |
FAQ
Q: What are the material characteristics of Q195 Roofing Sheet?
A:
Q195 Roofing Sheet is based on Q195 low-carbon steel, which has a low carbon content, giving it good plasticity and weldability. Its yield strength reaches 195MPa, which can meet the strength requirements of most conventional building scenes.
Q: What is the difference between Q195 and Q235 corrugated board?
A:
Q195: Lower cost (10-15% cheaper), slightly weaker in strength (yield strength ≥ 195MPa), suitable for non-harsh environments.
Q235: Higher in strength (yield strength ≥ 235MPa), used in heavy snow/typhoon areas.
Q:How long is the service life?
A:Under normal use and proper maintenance, the service life of Q195 color corrugated board can reach 15-20 years. In areas with mild environment and no frequent severe weather, it may be longer.
Q: Is it environmentally friendly? Can it be recycled?
A: It is 100% recyclable, and the production energy consumption is 70% lower than that of concrete tiles, meeting green building standards.
Q: What are the common thicknesses? How to choose?
A:
0.3-0.5mm: temporary buildings/farm sheds.
0.6-0.8mm: factories/warehouses (recommended).
≥1.0mm: rarely used
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