High strength SGH540 galvanized steel sheet,SGH540 hot dip galvanized steel plate,hot rolled SGH540 galvanized steel coil shall be rolled under steel standard JIS G3302 which is for continuously hot-dip zinc coated structural steel sheet and strip.As for the mechanical properties of SGH540,the tensile values shall apply to longitudinal samples and relate to the test piece cross section without zinc coating. Xinsteel suggest customers accept the surface quality treatment for hot dip galvanized steel plate SGH540,normally choose Class B,improved surface,with this surface quality,small imperfections such as stretch leveling breaks,skin pass marks,scratches,indentations,spangle structure and zinc run-off marks and light passivation marks are permissible.