重慶樓承板的(de)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)量沒有(you)(you)一個具體的(de)標準，制作壓型(xing)(xing)鋼(gang)(gang)板的(de)冷軋鋼(gang)(gang)卷須(xu)連續熱(re)(re)浸(jin)(jin)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)（或鍍(du)(du)鋁鋅(xin)(xin)(xin)(xin)(xin)），鍍(du)(du)（鋁）鋅(xin)(xin)(xin)(xin)(xin)量視設計要求(qiu)而定。樓承板用壓型(xing)(xing)鋼(gang)(gang)板宜選擇熱(re)(re)浸(jin)(jin)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)板。不(bu)允許使用電鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)板，電鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)板僅在基材表面形成保護(hu)層，防(fang)腐能力(li)有(you)(you)限。目前市(shi)場上有(you)(you)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)板（鍍(du)(du)層含鋁5%或55%），在酸(suan)性環境(jing)下的(de)防(fang)腐效(xiao)果(guo)由于熱(re)(re)浸(jin)(jin)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)板，但在混(hun)凝(ning)土(tu)的(de)堿性條件(jian)下，鍍(du)(du)鋁鋅(xin)(xin)(xin)(xin)(xin)的(de)防(fang)腐蝕(shi)性能低于熱(re)(re)浸(jin)(jin)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)板，且鋁會和(he)混(hun)凝(ning)土(tu)發生(sheng)反應，并降低混(hun)凝(ning)土(tu)與鋼(gang)(gang)板的(de)粘結性能。因此參考國外(wai)(wai)規范，及國內外(wai)(wai)工程，行家壓型(xing)(xing)鋼(gang)(gang)板不(bu)建(jian)議使用鍍(du)(du)鋁鋅(xin)(xin)(xin)(xin)(xin)鋼(gang)(gang)板。

用(yong)(yong)(yong)電(dian)鍍(du)(du)(du)法制造這種鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)具有良(liang)(liang)好的(de)(de)加工性(xing)。但鍍(du)(du)(du)層(ceng)較薄(bo)，耐腐(fu)蝕(shi)性(xing)不如(ru)熱浸法鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)；單(dan)(dan)面(mian)鍍(du)(du)(du)和雙(shuang)面(mian)差(cha)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。單(dan)(dan)面(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)，即(ji)只在一(yi)面(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)的(de)(de)產品。在焊接、涂裝、防銹處理、加工等(deng)方面(mian)，具有比雙(shuang)面(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)好的(de)(de)適應性(xing)。為(wei)(wei)克(ke)服(fu)單(dan)(dan)面(mian)未(wei)涂鋅(xin)(xin)(xin)(xin)的(de)(de)缺點，又有一(yi)種在另(ling)面(mian)涂以薄(bo)層(ceng)鋅(xin)(xin)(xin)(xin)的(de)(de)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)，即(ji)雙(shuang)面(mian)差(cha)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)；合(he)金、復合(he)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。它是用(yong)(yong)(yong)鋅(xin)(xin)(xin)(xin)和其(qi)他金屬如(ru)鉛、鋅(xin)(xin)(xin)(xin)制成合(he)金乃(nai)至復合(he)鍍(du)(du)(du)成的(de)(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。這種鋼(gang)(gang)(gang)板(ban)(ban)(ban)既(ji)具有防銹性(xing)能(neng)，又有良(liang)(liang)好的(de)(de)涂裝性(xing)能(neng)。 除上述五種外，還有彩色鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)、印花涂裝鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)、聚氯(lv)乙烯疊層(ceng)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)等(deng)。但目前常(chang)用(yong)(yong)(yong)的(de)(de)仍為(wei)(wei)熱浸鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)。 鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)按用(yong)(yong)(yong)途又可分為(wei)(wei)一(yi)般(ban)用(yong)(yong)(yong)、屋(wu)頂用(yong)(yong)(yong)、建筑外側板(ban)(ban)(ban)用(yong)(yong)(yong)、結構(gou)用(yong)(yong)(yong)、瓦(wa)壟板(ban)(ban)(ban)用(yong)(yong)(yong)、拉伸用(yong)(yong)(yong)和深沖用(yong)(yong)(yong)等(deng)鍍(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。

近期鋼價延(yan)續低迷，隨著通國規模的酷(ku)暑和旱季(ji)(ji)到(dao)來，熱(re)(re)鍍鋅(xin)卷板(ban)價格商場逐(zhu)漸(jian)進(jin)入需要旺(wang)季(ji)(ji)，海內鋼鐵(tie)商場或將窄幅(fu)調整。在決策層(ceng)兩手抓(zhua)制度(du)措施落實狀況、貨銀本位度(du)定向寬松力度(du)加大的直觀層(ceng)面利好牽動(dong)下，商場信念逐(zhu)漸(jian)趨穩，短期海內鋼價無望(wang)止跌企穩;另一上面，以(yi)后(hou)鋼價殺跌電(dian)能(neng)有余，而上漲(zhang)也(ye)仍(reng)然(ran)屏障(zhang)重(zhong)重(zhong)。熱(re)(re)鍍鋅(xin)卷板(ban)價格價錢或將長期在于低位運行場面。

C型鋼批發鍍鋅板選擇要注重的幾個要點，工業企業的客戶選擇專用工業原料，要注重從四個標準。一是要注重品牌來進行選擇，因為鍍鋅技術的要求嚴格，所以有的基礎，當然產品質量與技術標準都會更可靠，都會有好的專業標準。二是要注重產品本身的鍍層質量，鍍層一要靠技術，二要靠純度，所以從產品表面來看質量，這是基本也是重要的一個標準。三是要看基礎材料。攀鋼C型鋼批發鍍鋅(xin)板基礎金屬(shu)材(cai)料(liao)的(de)(de)質量，與成品(pin)鍍鋅(xin)板的(de)(de)質量與耐(nai)用性(xing)密切相關，所以在進(jin)行產(chan)品(pin)選擇的(de)(de)時候(hou)，需要注重這個細節(jie)，而材(cai)料(liao)的(de)(de)提供，就(jiu)是對于(yu)工(gong)業生產(chan)來(lai)說(shuo)，有基礎條件。四是要注重價(jia)格對比，不(bu)是好的(de)(de)就(jiu)是貴(gui)的(de)(de)，但是如(ru)果廉價(jia)的(de)(de)把(ba)產(chan)品(pin)，那是不(bu)可信的(de)(de)。

首(shou)先，在鋼結構樓層板(ban)(ban)(ban)(ban)(ban)中(zhong)要(yao)(yao)(yao)達到耐火(huo)1.5小時，總(zong)的來說(shuo)可以選擇開(kai)(kai)口板(ban)(ban)(ban)(ban)(ban)、縮(suo)口板(ban)(ban)(ban)(ban)(ban)、閉(bi)口板(ban)(ban)(ban)(ban)(ban)三大類。規范上混(hun)凝(ning)土要(yao)(yao)(yao)高于開(kai)(kai)口板(ban)(ban)(ban)(ban)(ban)肋(lei)頂之上80mm，并且(qie)板(ban)(ban)(ban)(ban)(ban)底(di)需(xu)配置板(ban)(ban)(ban)(ban)(ban)底(di)受(shou)力(li)筋。還有一(yi)種就是再開(kai)(kai)口板(ban)(ban)(ban)(ban)(ban)底(di)部刷防火(huo)涂料，涂料厚度大于等于15,這(zhe)樣的話，只(zhi)要(yao)(yao)(yao)達到構造(zao)要(yao)(yao)(yao)求高于肋(lei)頂5公分就可以了(le)。而縮(suo)口板(ban)(ban)(ban)(ban)(ban)和閉(bi)口板(ban)(ban)(ban)(ban)(ban)，只(zhi)需(xu)要(yao)(yao)(yao)總(zong)的樓板(ban)(ban)(ban)(ban)(ban)厚度大于等于110即可，但是縮(suo)口板(ban)(ban)(ban)(ban)(ban)雖然在防火(huo)方面比開(kai)(kai)口板(ban)(ban)(ban)(ban)(ban)要(yao)(yao)(yao)好。但是底(di)部還是需(xu)要(yao)(yao)(yao)加板(ban)(ban)(ban)(ban)(ban)底(di)受(shou)力(li)筋，而閉(bi)口板(ban)(ban)(ban)(ban)(ban)則不(bu)需(xu)要(yao)(yao)(yao)。