Low Price Chinese Factory Supply Zinc Coated Corrugated Galvanized Steel Roofing Sheet

Features of Box Profile Steel Roof Sheets:
1). Extraordinary thermal insulation: The coeficient of heat conductivity is 0.325 w/m. K.
2). Good sound insulation
3). Excellent corrosion resistance performance
4). Good resistance to impact and low temperature: This tile doesn't crack after 1KG steel ball falls
On it from 3 meters high. Moreover, the resistance to impact under minus 40 ° C low temperature
Is also very outstanding.
5). Excellent waterproof performance: The high weathering resistance resin adopted in the roofing
Tile is compact and does not absorb water.
6). Strong fire resistance: The inner material PVC resin is difficult-flammable material, fire proofing performance
Is ≥ Class B1.
7). Stable volume: The expansion coefficient is 4.93× 10-5 mm/mm/° C