No beam arch of color plate material technical requirements
Color board material:
The roof structure is used for color galvanized steel sheet Shanghai Baosteel production model is Ts280GD + Z structural steel.
Technical performance are as follows:
⑴ substrate yield strength of 280Mpa or 345Mpa.
⑵ Galvanized ≥180g / m2.
⑶ coating thickness ≥20um.
⑷ salt spray resistance ≥500h.