规格 锌层 材质 0.4*1250*C 80 DX51D+Z 0.42*1250*C 80 DX51D+Z 0.45*1250*C 225 S280GD+Z 0.47*1250*C 225 S280GD+Z 0.5*1250*C 80 SGCC 0.55*1250*C 180 S280GD+Z 0.55*1250*C 225 S280GD+Z 0.6*1250*C 80 DX51D+Z 0.65*1250*C 180 DX51D+Z 0.7*1250*C 80 DX51D+Z 0.7*1250*C 80 SGCC 0.75*1250*C 80 DX51D+Z 0.8*1250*C 80 DX51D+Z 0.9*1250*C 80 DX51D+Z 0.95*1250*C 80 DX51D+Z