ncc

*Steel Base-Material strength*
Base metal conforms to	ASTM A792-89 GRADE 80 (ASTM A446M GRADE E)	yielding strength 550MPa
Base metal conforms to	ASTM A792-89 GRADE 50 (ASTM A446M GRADE C)	yielding strength 350MPa
Base metal conforms to	ASTM A792-89 GRADE 40 (ASTM A446M GRADE A)	yielding strength 275MPa

Plating processing
Cold-roll steel plate,after hot-dip Aluminium galvanizing,conforms toASTM-89 or
AS1397,in their composition:55%Al+43.5%Zn+1.5%Si,Alloy adhesion is over 150g/m2

　　Cold-rool steel plate,after hot-dip galvanizing,conforms to ASTM A792-89，Zinc
adhesion is over 275g/m2（Zn27)。

Surface paint-coating

　　Type of prime coating：EPOXY,standard thickness 5um。
　　Type of face coating：POLYESTER,standard thickness 20um。
　　　　　　　　　　　　　(SILICON MODIFIED POLYESTER),standard thickness 20um。
　　　　　　　　　　　　 (POLY-VINYLIDENE FLUORIDE),standard thickness 20um。