... : 30 Years 304 shock resistance 8 Grade 85 salt spray test 4,,salt spray test 4 days , paint slightly rust allow , no ... 500N/m2,1/25013 Inner core materials fire resistance B214 water absorptivity 4%15 Roof load 3KN/m216 antistatic floor load ... burning performance Hierarchical Methodology >>19 Water-proof 0.2Mpa,10mm/min,30min,Endure water pressure 0.2Mpa; Water spray intensity :10mm/min .( for 30 ...