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(er)縮口(kou)(kou)板(ban)(ban)和(he)閉(bi)口(kou)(kou)板(ban)(ban)，只需要(yao)(yao)總的樓板(ban)(ban)厚度大于等于110即可，但是縮口(kou)(kou)板(ban)(ban)雖然在防火方面比(bi)開口(kou)(kou)板(ban)(ban)要(yao)(yao)好。但是底部還(huan)是需要(yao)(yao)加板(ban)(ban)底受力筋，而(er)閉(bi)口(kou)(kou)板(ban)(ban)則(ze)不(bu)需要(yao)(yao)。

熱(re)鍍(du)(du)(du)鋅(xin)板和電鍍(du)(du)(du)鋅(xin)板在鍍(du)(du)(du)鋅(xin)量上有(you)很大(da)(da)(da)的(de)(de)差別，就像山東彩(cai)涂(tu)卷）。熱(re)鍍(du)(du)(du)鋅(xin)的(de)(de)鍍(du)(du)(du)鋅(xin)量不(bu)可(ke)能太小(xiao)，一(yi)般(ban)較小(xiao)為雙面50～60g／m2，較大(da)(da)(da)可(ke)達600g／m2。電鍍(du)(du)(du)鋅(xin)板的(de)(de)鍍(du)(du)(du)鋅(xin)層可(ke)以很薄，較小(xiao)達15g／m2，但要求鍍(du)(du)(du)層較厚(hou)的(de)(de)話則生產線速度很慢(man)，不(bu)適(shi)應現(xian)代化機組的(de)(de)工藝特(te)點，一(yi)般(ban)較大(da)(da)(da)為lO0g／m2左右。正(zheng)因為如此，電鍍(du)(du)(du)鋅(xin)板的(de)(de)生產受(shou)到(dao)很大(da)(da)(da)的(de)(de)限制。工一(yi)般(ban)電鍍(du)(du)(du)鋅(xin)比較多，適(shi)用(yong)(yong)于小(xiao)部件(jian)(jian)；熱(re)鍍(du)(du)(du)鋅(xin)一(yi)般(ban)用(yong)(yong)于電力(li)設備(bei)和構(gou)件(jian)(jian)，適(shi)用(yong)(yong)于大(da)(da)(da)的(de)(de)部件(jian)(jian)和設備(bei)。當(dang)然他們的(de)(de)價格也相對便宜一(yi)些。建設部已(yi)正(zheng)式下文，淘汰技術落后(hou)的(de)(de)冷鍍(du)(du)(du)鋅(xin)管(guan)，不(bu)準(zhun)用(yong)(yong)冷鍍(du)(du)(du)鋅(xin)管(guan)作(zuo)水、煤氣(qi)管(guan)。

熱(re)(re)浸(jin)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)將薄(bo)鋼(gang)板(ban)(ban)(ban)(ban)(ban)浸(jin)入熔(rong)解(jie)的(de)(de)鋅(xin)(xin)(xin)槽(cao)中(zhong)，使其表(biao)面(mian)粘附一層(ceng)鋅(xin)(xin)(xin)的(de)(de)薄(bo)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。目前主要采用連續鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)工(gong)藝生產，即把成卷的(de)(de)鋼(gang)板(ban)(ban)(ban)(ban)(ban)連續浸(jin)在熔(rong)解(jie)有(you)鋅(xin)(xin)(xin)的(de)(de)鍍(du)(du)(du)(du)槽(cao)中(zhong)制(zhi)成鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban);合(he)金化鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。這(zhe)(zhe)種鋼(gang)板(ban)(ban)(ban)(ban)(ban)也是用熱(re)(re)浸(jin)法制(zhi)造(zao)，但(dan)在出槽(cao)后(hou)，立即把它加(jia)(jia)熱(re)(re)到(dao)500 ℃左右(you)，使其生成鋅(xin)(xin)(xin)和(he)(he)鐵的(de)(de)合(he)金被(bei)膜。這(zhe)(zhe)種鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)具有(you)良好(hao)的(de)(de)涂料的(de)(de)密著性(xing)(xing)和(he)(he)焊接性(xing)(xing);電鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。用電鍍(du)(du)(du)(du)法制(zhi)造(zao)這(zhe)(zhe)種鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)具有(you)良好(hao)的(de)(de)加(jia)(jia)工(gong)性(xing)(xing)。但(dan)鍍(du)(du)(du)(du)層(ceng)較薄(bo)，耐(nai)腐蝕性(xing)(xing)不(bu)如熱(re)(re)浸(jin)法鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban);單面(mian)鍍(du)(du)(du)(du)和(he)(he)雙面(mian)差鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。單面(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)，即只(zhi)在一面(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)的(de)(de)產品。在焊接、涂裝、防銹(xiu)處理、加(jia)(jia)工(gong)等方面(mian)，具有(you)比雙面(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)好(hao)的(de)(de)適應性(xing)(xing)。

鍍(du)鋅是(shi)一(yi)(yi)(yi)種(zhong)經常(chang)采(cai)用(yong)的經濟而有(you)效的防(fang)腐(fu)方(fang)法(fa)。鋅產量的一(yi)(yi)(yi)半左右(you)均用(yong)于(yu)(yu)此種(zhong)工藝。鍍(du)鋅卷(juan)是(shi)為防(fang)止(zhi)鋼(gang)(gang)板(ban)(ban)表(biao)(biao)面(mian)(mian)(mian)遭受(shou)腐(fu)蝕(shi)延長其(qi)使用(yong)壽命(ming)，在(zai)鋼(gang)(gang)板(ban)(ban)表(biao)(biao)面(mian)(mian)(mian)涂以一(yi)(yi)(yi)層金屬鋅，這種(zhong)涂鋅的鋼(gang)(gang)板(ban)(ban)稱為鍍(du)鋅卷(juan)。鍍(du)鋅卷(juan)主(zhu)要用(yong)于(yu)(yu)建(jian)筑、家電、汽車、容(rong)器(qi)、交通及(ji)(ji)家業(ye)等領域(yu)。特別是(shi)鋼(gang)(gang)結構建(jian)筑、汽車制造、鋼(gang)(gang)板(ban)(ban)倉制造等行業(ye)。耐腐(fu)蝕(shi)強、表(biao)(biao)面(mian)(mian)(mian)質量好(hao)、得(de)利于(yu)(yu)深加工、經濟實用(yong)等。有(you)關產品(pin)標準都列明鍍(du)鋅卷(juan)推薦(jian)的標準厚度(du)、長度(du)和寬度(du)及(ji)(ji)其(qi)允許偏(pian)差。鍍(du)鋅卷(juan)厚度(du)偏(pian)差一(yi)(yi)(yi)般(ban)在(zai)0.05mm，長寬偏(pian)差一(yi)(yi)(yi)般(ban)在(zai)5mm ，板(ban)(ban)材的厚度(du)一(yi)(yi)(yi)般(ban)在(zai)0.2-3.2之間 。

實現了(le)機(ji)械化(hua)生產(chan)(chan)(chan)，有利(li)于(yu)鋼(gang)筋排列間(jian)距均勻、混凝(ning)土保護層厚度一致(zhi)，提高了(le)樓板(ban)(ban)的(de)(de)施工(gong)質量(liang)。裝(zhuang)配式鋼(gang)筋桁架樓承板(ban)(ban)可(ke)(ke)顯著減少現場鋼(gang)筋綁扎工(gong)程量(liang)，加(jia)快施工(gong)進度，增加(jia)施工(gong)保證，實現文明施工(gong)。裝(zhuang)配式模板(ban)(ban)和連接(jie)件拆裝(zhuang)方便，可(ke)(ke)多(duo)次重(zhong)復利(li)用，節約鋼(gang)材，符合(he)國家節能環保的(de)(de)要求。鋼(gang)構自(zi)主研發的(de)(de)產(chan)(chan)(chan)品(pin)(pin)配套自(zi)動(dong)(dong)化(hua)生產(chan)(chan)(chan)設備，大大提高了(le)勞動(dong)(dong)生產(chan)(chan)(chan)率，有效降低了(le)產(chan)(chan)(chan)品(pin)(pin)成本，并(bing)編制了(le)產(chan)(chan)(chan)品(pin)(pin)生產(chan)(chan)(chan)企業標(biao)準、設計手冊和節點(dian)構造圖集以及施工(gong)手冊。并(bing)經過(guo)多(duo)項工(gong)程應用，各項性(xing)能可(ke)(ke)以滿足現澆(jiao)鋼(gang)筋混凝(ning)土樓板(ban)(ban)承載力和變形的(de)(de)要求。

熱(re)(re)鍍鋅(xin)(xin)卷板(ban)現貨消息(xi)：熱(re)(re)鍍鋅(xin)(xin)產(chan)品廣(guang)泛用于建筑(zhu)、家電、車船、容(rong)器制造(zao)業(ye)、機電業(ye)等，幾(ji)乎涉及到衣食住行(xing)各個領域。近(jin)年來(lai)，世(shi)界鍍鋅(xin)(xin)鋼(gang)板(ban)需求量不斷增(zeng)加，產(chan)量增(zeng)長(chang)也很(hen)快，在(zai)(zai)美(mei)、日等鋼(gang)材(cai)(cai)生產(chan)大國，熱(re)(re)鍍鋅(xin)(xin)鋼(gang)板(ban)在(zai)(zai)鋼(gang)材(cai)(cai)中(zhong)所(suo)占比(bi)例已高達13%-15%。 熱(re)(re)鍍鋅(xin)(xin)卷板(ban)現貨消息(xi)：近(jin)來(lai)，汽(qi)車行(xing)業(ye)越來(lai)越重視材(cai)(cai)料的(de)使用壽(shou)命，用涂漆冷(leng)軋鋼(gang)板(ban)已不能滿足耐(nai)腐(fu)蝕方(fang)面的(de)要求。在(zai)(zai)這種情況下，耐(nai)腐(fu)蝕性優良(liang)且成(cheng)本低廉的(de)熱(re)(re)鍍鋅(xin)(xin)板(ban)開始普遍受到了汽(qi)車廠(chang)家的(de)青(qing)睞。