DX51D hot dipped galvanized steel strip 1.Grade:SPHC,SPHD ... 3.Zinc:60-275g/m2 ProductDX51D hot dipped galvanized steel strip StandardEU, GB, JIS, etc GradeSPHC SPHD SPHE ... circumferential bands in steel, galvanized metal fluted rings on inner and outer edges, galvanized metal and ... spangle (Z)Under the common conditions, the galvanized zinc makes spangle after condensation.Common usageFinishing ...