首先，在鋼結構樓層板中要達到耐火1.5小時，總的來說可以選擇開口板、縮口板、閉口板三大類。合川冷軋板規范上混凝土要高于開口板肋頂之上80mm，并且板底需配置板底受力筋。還有一種就是再開口板底部刷防火涂料，涂料厚度大于等于15,這樣的話，只要達到構造要求高于肋頂5公分就可以了。冷軋板批發而縮(suo)(suo)口(kou)板(ban)(ban)(ban)和閉(bi)口(kou)板(ban)(ban)(ban)，只需要總的樓板(ban)(ban)(ban)厚度大(da)于等于110即可，但(dan)是(shi)縮(suo)(suo)口(kou)板(ban)(ban)(ban)雖(sui)然在(zai)防火(huo)方面比開口(kou)板(ban)(ban)(ban)要好。但(dan)是(shi)底部還(huan)是(shi)需要加板(ban)(ban)(ban)底受力(li)筋(jin)，而閉(bi)口(kou)板(ban)(ban)(ban)則不需要。

熱鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)板和電鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)板在鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)上(shang)有(you)很大的(de)(de)(de)(de)差別，就像(xiang)山(shan)東彩涂卷）。熱鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)的(de)(de)(de)(de)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)不(bu)可能太小，一(yi)般較(jiao)小為雙(shuang)面50～60g／m2，較(jiao)大可達600g／m2。電鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)板的(de)(de)(de)(de)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)層可以很薄，較(jiao)小達15g／m2，但要求鍍(du)(du)(du)(du)(du)(du)層較(jiao)厚的(de)(de)(de)(de)話(hua)則生產線速度很慢，不(bu)適應現代化機(ji)組(zu)的(de)(de)(de)(de)工藝特點，一(yi)般較(jiao)大為lO0g／m2左右。正因為如此，電鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)板的(de)(de)(de)(de)生產受到很大的(de)(de)(de)(de)限(xian)制。工一(yi)般電鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)比較(jiao)多，適用于小部件；熱鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)一(yi)般用于電力設備(bei)和構(gou)件，適用于大的(de)(de)(de)(de)部件和設備(bei)。當然他們的(de)(de)(de)(de)價格也相對便宜一(yi)些。建設部已正式下文，淘汰技術(shu)落后的(de)(de)(de)(de)冷(leng)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)管，不(bu)準(zhun)用冷(leng)鍍(du)(du)(du)(du)(du)(du)鋅(xin)(xin)(xin)管作水(shui)、煤氣管。

熱(re)浸鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)將薄(bo)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)浸入熔解(jie)的(de)(de)(de)鋅(xin)(xin)(xin)槽(cao)中，使(shi)其表(biao)面(mian)(mian)粘附一層鋅(xin)(xin)(xin)的(de)(de)(de)薄(bo)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。目前(qian)主要采用(yong)連續鍍(du)(du)(du)鋅(xin)(xin)(xin)工(gong)藝生產(chan)，即把成(cheng)卷的(de)(de)(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)連續浸在(zai)熔解(jie)有(you)鋅(xin)(xin)(xin)的(de)(de)(de)鍍(du)(du)(du)槽(cao)中制成(cheng)鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban);合(he)金化(hua)鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。這種鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)也是用(yong)熱(re)浸法制造(zao)，但在(zai)出槽(cao)后，立即把它加熱(re)到(dao)500 ℃左右，使(shi)其生成(cheng)鋅(xin)(xin)(xin)和鐵的(de)(de)(de)合(he)金被膜。這種鍍(du)(du)(du)鋅(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)具有(you)良好的(de)(de)(de)涂料的(de)(de)(de)密(mi)著性和焊接性;電鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。用(yong)電鍍(du)(du)(du)法制造(zao)這種鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)具有(you)良好的(de)(de)(de)加工(gong)性。但鍍(du)(du)(du)層較薄(bo)，耐腐蝕性不(bu)如熱(re)浸法鍍(du)(du)(du)鋅(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban);單面(mian)(mian)鍍(du)(du)(du)和雙面(mian)(mian)差鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。單面(mian)(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)(ban)，即只(zhi)在(zai)一面(mian)(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)的(de)(de)(de)產(chan)品(pin)。在(zai)焊接、涂裝、防銹處理、加工(gong)等方面(mian)(mian)，具有(you)比雙面(mian)(mian)鍍(du)(du)(du)鋅(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)好的(de)(de)(de)適應性。

鍍(du)(du)(du)鋅(xin)(xin)(xin)是一種(zhong)(zhong)經常(chang)采用(yong)的經濟而有(you)效的防腐方法。鋅(xin)(xin)(xin)產量(liang)的一半左右均用(yong)于此種(zhong)(zhong)工藝。鍍(du)(du)(du)鋅(xin)(xin)(xin)卷是為防止鋼(gang)板(ban)表(biao)(biao)面遭受(shou)腐蝕延長(chang)(chang)其使用(yong)壽命，在(zai)鋼(gang)板(ban)表(biao)(biao)面涂以一層金(jin)屬鋅(xin)(xin)(xin)，這種(zhong)(zhong)涂鋅(xin)(xin)(xin)的鋼(gang)板(ban)稱(cheng)為鍍(du)(du)(du)鋅(xin)(xin)(xin)卷。鍍(du)(du)(du)鋅(xin)(xin)(xin)卷主要用(yong)于建筑、家(jia)電、汽(qi)車(che)、容(rong)器、交通及家(jia)業(ye)等(deng)領域。特別(bie)是鋼(gang)結構建筑、汽(qi)車(che)制造、鋼(gang)板(ban)倉制造等(deng)行業(ye)。耐腐蝕強、表(biao)(biao)面質量(liang)好、得利(li)于深加工、經濟實用(yong)等(deng)。有(you)關產品標準都(dou)列明鍍(du)(du)(du)鋅(xin)(xin)(xin)卷推薦(jian)的標準厚度、長(chang)(chang)度和(he)寬(kuan)度及其允(yun)許偏差。鍍(du)(du)(du)鋅(xin)(xin)(xin)卷厚度偏差一般在(zai)0.05mm，長(chang)(chang)寬(kuan)偏差一般在(zai)5mm ，板(ban)材的厚度一般在(zai)0.2-3.2之間 。

實現(xian)(xian)了機械(xie)化生(sheng)產，有利于鋼(gang)筋(jin)排列(lie)間距(ju)均勻、混凝(ning)(ning)土保(bao)護層厚度一(yi)致，提(ti)高(gao)(gao)了樓板的施(shi)工(gong)質量。裝配式鋼(gang)筋(jin)桁架樓承板可(ke)顯(xian)著減少現(xian)(xian)場鋼(gang)筋(jin)綁扎工(gong)程量，加快施(shi)工(gong)進度，增加施(shi)工(gong)保(bao)證，實現(xian)(xian)文明施(shi)工(gong)。裝配式模(mo)板和(he)連(lian)接(jie)件拆裝方便，可(ke)多次重(zhong)復(fu)利用(yong)，節約(yue)鋼(gang)材(cai)，符合國家節能環保(bao)的要(yao)求。鋼(gang)構(gou)自主(zhu)研(yan)發的產品(pin)配套自動(dong)化生(sheng)產設(she)備，大大提(ti)高(gao)(gao)了勞動(dong)生(sheng)產率(lv)，有效(xiao)降低了產品(pin)成本，并編制了產品(pin)生(sheng)產企業(ye)標準(zhun)、設(she)計手冊(ce)(ce)和(he)節點構(gou)造圖(tu)集(ji)以及施(shi)工(gong)手冊(ce)(ce)。并經過多項(xiang)工(gong)程應(ying)用(yong)，各(ge)項(xiang)性能可(ke)以滿足現(xian)(xian)澆(jiao)鋼(gang)筋(jin)混凝(ning)(ning)土樓板承載力和(he)變形的要(yao)求。

熱(re)(re)鍍(du)(du)鋅(xin)卷(juan)(juan)板現(xian)貨(huo)(huo)消息：熱(re)(re)鍍(du)(du)鋅(xin)產品廣泛用(yong)(yong)于(yu)建筑、家電(dian)、車船、容器制造業、機電(dian)業等(deng)，幾乎涉及到(dao)衣食(shi)住行(xing)各個領(ling)域。近(jin)年來，世界鍍(du)(du)鋅(xin)鋼(gang)板需(xu)求量(liang)不斷(duan)增加，產量(liang)增長也很(hen)快，在美、日(ri)等(deng)鋼(gang)材生產大(da)國，熱(re)(re)鍍(du)(du)鋅(xin)鋼(gang)板在鋼(gang)材中(zhong)所(suo)占比例(li)已(yi)高達13%-15%。 熱(re)(re)鍍(du)(du)鋅(xin)卷(juan)(juan)板現(xian)貨(huo)(huo)消息：近(jin)來，汽(qi)車行(xing)業越(yue)來越(yue)重視(shi)材料的(de)使用(yong)(yong)壽命，用(yong)(yong)涂漆(qi)冷軋(ya)鋼(gang)板已(yi)不能(neng)滿足耐(nai)腐蝕(shi)方面的(de)要求。在這種情況下，耐(nai)腐蝕(shi)性優(you)良且成本(ben)低廉的(de)熱(re)(re)鍍(du)(du)鋅(xin)板開始(shi)普遍受到(dao)了(le)汽(qi)車廠家的(de)青睞。