热镀锌钢板介绍：DC51D+Z(SGCC.), DC52D+Z,DC53D+Z(.DC54D+Z, DC56D+Z, H220PD+Z, H260PD+Z, H300LAD+Z, H340LAD+Z, H380LAD+Z, H420LAD+Z, H180BD+Z, H220BD+Z, H260BD+Z, H180YD+Z , H220YD+Z , H260YD+Z, S220GD+Z, S250GD+Z, S280GD+Z, S320GD+Z, S350GD+Z, S550GD+Z,SECC-PC5,SECCN5,SECCNE