镀锌钢板是为防止钢板表面遭受腐蚀延长其使用寿命，在钢板表面涂以一层金属锌，这种涂锌的钢板称为镀锌板。

（1）表面状态：镀锌板由于涂镀工艺中处理方式不同，表面状态也不同，如普通锌花、细锌花、平整锌花、无锌花以及磷化处理的表面等。德国标准还规定有表面级别。（2）镀锌板应具有良好的外观，不得有对产品使用有害的缺陷，如无镀、孔洞、破裂以及浮渣、超过镀厚、擦伤、铬酸污垢、白锈等。国外标准对具体外观缺陷规定都不十分明确。订货时对一些具体缺陷应在合同上列明DC57D+ZCR6CR6DX54DDX54D DX54D+Z DC54D+Z DC56D+ZDX54D+Z275 DX57D+ZDX57D+Z DX54D+Z275DC54D+Z DC52D+ZDC52D+ZSP706DD51D+ZDD51D+Z FEP05 ZNT/F CR3CR3JAC270C CR1H260LA H380LADX56D+ZDC53D+Z DC53D+ZDX57DDX57D DC54D+Z275DX53DDX53D HX420LAD DX52D+ZDX52D+Z DX51DDX51D H260LAH260LA

SP703 CR5 DX56D DDSA SGCD4DX53D+ZDX53D+Z DC51D+Z275DC51D+Z275CR1 DX56D+Z CR3CR3CR240LA DC51D+AZ  DC52D+AZ JAC270F DC57D+Z DC54D+ZF DC56D+ZF SGC440 DX56D+ZDX56D+Z DD54D+ZSGH440 S280GD+Z S280GD DC52D+ZF DX57D+ZDX57D+ZDX51D+Z275DX51D+Z275CR5CR5DX51D+ZDX51D+Z DC53D+Z HC380LA DX52DDX52D ST04Z HX380LAD+Z DX56DDX56DDC54D+Z275DC54D+Z275  CR420LA DX51D HC420LAD+Z DD51D+Z DX52D+Z DX57D SP791 HC260LA SCGA270C DX51D+Z275 SECC SGC570 BLCE+Z 
DC01+ZE JEC270C DX56D+ZDD51D+ZDD51D+Z DC54D+Z DC54D+ZDX1 SECD DX52DDX52D ST06Z JEC270D DX2 SECE HR2 BUSDE+ZSGH400 DC04+ZE SGC4001、热镀锌板，将薄钢板浸入熔解的锌槽中，使其表面粘附一层锌的薄钢板。主要采用连续镀锌工艺生产，即把成卷的钢板连续浸在熔解有锌的镀槽中制成镀锌钢板；合金化镀锌钢板。这种钢板也是用热浸法制造，但在出槽后，立即把它加热到500℃左右，使其生成锌和铁的合金被膜。这种镀锌板具有良好的涂料的密着性和焊接性。JEC270E DX3 FEP06ZNT/F SECIF BUFDE+Z DC05+ZE JEC270F BSUFDE+Z SGCC DC06+ZE CR4 DX57D+Z SCGA270D JEC270F SGHC DX54D+ZDC53D+Z DC53D+Z DC51D+ZF CR5CR5DC51D+Z275
DC52D+Z DX52D BJDD+Z SGC340CR1CR1 DX54D+Z275 SGCD1 DX52D+ZDX52D+ZCR2 SP709 SP702 HR1 DC57D+ZDC57D+Z CGA270DX CR270LA GQ280 CR260LA FEP02 ZNT/F HX260LAD CR300LA HC450LA S350GD+ZDD54D+ZDD54D+Z H300LAD+Z CR6 ST07Z DD54D+Z HC300LAD+Z DX51DDX51D HX300LAD 2、热镀锌按退火方式的不同可分为线内退火和线外退火两种类型，又分别叫保护气体法和熔剂法。允许有负值公差，不允许超过+6mm。热镀锌板与电镀锌板的区别，热镀锌板就是热轧镀锌板,冷镀锌板就是冷轧镀锌板.从材料上来说,两种镀锌板的组成都基本类似.区别在于冷镀锌板要比热镀锌板的更薄,表面质量更好,工艺更复杂一些.价格也就更高一些了STE550Z CR3CR3S390GD CR3 B420LA HC340LAD+Z DX51D+Z HX300LAD+Z H300LA HC300LA
SGCD3 HR340LA SGC490 CR1CR1H420LA DC51D+Z275DC51D+Z275 DX53DDX53DSCGA270F DX56DDX56D S550GD+Z CR6CR6 HX340LAD+ZCR2CR2 H340LA HC340LA HX340LAD DX54D+Z BLDE+Z CR380LA HC380LAD+Z CR3CR3HX380LAD HC420LA CR340LA HR3 DC51D+Z275
DC54D+Z CR5CR5SCGA270EDX53D+ZDX53D+Z H260LAH260LADX51D+Z275DX51D+Z275HC500LA CR3CR3DX57DDX57D DC53D+ZFDX54DDX54D  CR6CR6HX420LAD+Z FEP06 ZNT/F HC450LAD+Z从工艺上来说,钢材由铸坯送热轧轧制,轧成一定厚度的板材,如厚度10mm左右,
如果用户对板材的表面,厚度,机械强度没有更高要求的话,就可进行成品处理,如镀锌之类,直接出售,就是热板.如果对板才有更高的要求,那么热轧后的板才送冷轧线进行再次加工,经酸洗,退火,再次轧制等工序,得到更薄,表面光洁,机械性能更好的冷轧板材。 S220GD+Z S220GD BJDC+Z S250GD+Z S250GDDC52D+ZDC52D+Z SCGS590DUDX51D+ZDX51D+Z SCGA340BHX S400GD+Z DX54D DX54D+Z FEP04 ZNT/F S550GD CR2CR2DX53D S320GD+Z S320GD BLC-JD1 BLC-JD2 BLC-JD3