A. The main structure( welding H section steel)
1. Steel material: Q345, Q235.
2. Welding type: Auto- Submerged arc Welding and CO2 shielded welding.
3. Derusting Grade: Sa 2.5 grade in China.
4. Preservative treatment: two layer primer and two layer
paint light gray (total thickness: 100-120um).
B. The secondary structure( C purlin, steel bracing, tie- bar, knee- brace, support for steel beam and column, etc)
1. Steel material: Q235
2. Method of productionCutting, forming, drilling, CO2 welding, de- rusting, painting, etc
3. Derusting Grade: Sa 2.5 grade in China.
4. Preservative treatment: two layer primer and two layer epoxy paint light gray (total thickness: 100-120um).
C. EPS sandwich panel for Roof.
1. Panel type: 970,950
2. Galvanized steel sheet: 60-70g/m2
3. Outside (corrugated steel sheet): 0.3, 0.4, 0.5,0.6mm
4. Inside (corrugated steel sheet): 0.3, 0.4, 0.5,0.6mm
5. Density of EPS: 8kg-12kg/m2
6. Color of steel sheet:  sea blue, white grey
steel structure warehouse
Steel Structure warehouse/plants/factory