近期(qi)(qi)鋼(gang)價(jia)(jia)延續低迷，隨著通國規模(mo)的酷暑和旱季(ji)(ji)到(dao)來，熱(re)鍍鋅(xin)卷(juan)板價(jia)(jia)格商場(chang)逐(zhu)漸進入(ru)需要旺季(ji)(ji)，海內鋼(gang)鐵商場(chang)或將(jiang)窄幅(fu)調整。在決策(ce)層(ceng)兩手抓制度(du)措施(shi)落實狀況、貨銀本位(wei)度(du)定向寬(kuan)松力度(du)加大的直觀層(ceng)面利好牽動(dong)下，商場(chang)信念(nian)逐(zhu)漸趨(qu)穩，短期(qi)(qi)海內鋼(gang)價(jia)(jia)無望止跌(die)企穩;另一上(shang)面，以后(hou)鋼(gang)價(jia)(jia)殺跌(die)電能有(you)余，而上(shang)漲也仍然(ran)屏障(zhang)重重。熱(re)鍍鋅(xin)卷(juan)板價(jia)(jia)格價(jia)(jia)錢或將(jiang)長(chang)期(qi)(qi)在于低位(wei)運行(xing)場(chang)面。

重慶鍍(du)鋅(xin)板(ban)(ban)(ban)按(an)生(sheng)產(chan)及加工(gong)方法(fa)可(ke)分為(wei)以(yi)(yi)下(xia)幾類： 熱浸(jin)鍍(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。將(jiang)薄鋼(gang)(gang)(gang)板(ban)(ban)(ban)浸(jin)入熔解的(de)鋅(xin)槽中，使其(qi)表面粘附(fu)一層(ceng)鋅(xin)的(de)薄鋼(gang)(gang)(gang)板(ban)(ban)(ban)。目前(qian)主(zhu)要采用(yong)連(lian)續(xu)(xu)鍍(du)鋅(xin)工(gong)藝生(sheng)產(chan)，即把成卷的(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban)連(lian)續(xu)(xu)浸(jin)在熔解有(you)鋅(xin)的(de)鍍(du)槽中制成鍍(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)； 合(he)金化(hua)鍍(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。為(wei)克服(fu)單面未涂(tu)鋅(xin)的(de)缺點，又(you)有(you)一種在另面涂(tu)以(yi)(yi)薄層(ceng)鋅(xin)的(de)鍍(du)鋅(xin)板(ban)(ban)(ban)，即雙面差鍍(du)鋅(xin)板(ban)(ban)(ban)；合(he)金、復(fu)合(he)鍍(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。它是(shi)用(yong)鋅(xin)和其(qi)他金屬如鉛、鋅(xin)制成合(he)金乃至復(fu)合(he)鍍(du)成的(de)鋼(gang)(gang)(gang)板(ban)(ban)(ban)。這種鋼(gang)(gang)(gang)板(ban)(ban)(ban)既(ji)具有(you)防銹性能，又(you)有(you)良好的(de)涂(tu)裝性能。

江津攀華樓承板樓承板鍍鋅首要起到防腐的效果，按標準組合樓板與非組合樓板壓型鋼板應選用熱鍍鋅，不該選用電鍍鋅鋼板，其雙面鍍鋅層總含量要滿足在使用期間不致銹損的要求。當作為非組合樓承板時，鍍鋅層含量可選用較低值;當為組合樓承板時，鍍鋅層含量不該小于150g/m2。當為組合樓板且使用環境條件較為惡劣時，鍍鋅層含量應選用上限值或更高值。更高的鍍鋅要求，如雙面鍍鋅量為300g/m2、350g/m2或鍍鋁鋅(5%鋁)275g/m2、300g/m2等，較高的鍍層量使組合樓板有更長耐久性，同等量的鍍鋁鋅的防銹蝕才能大約兩倍于一般熱鍍鋅。樓承板廠家鍍鋅量(liang)(liang)(liang)也不(bu)是越厚越好(hao)，當鍍鋅量(liang)(liang)(liang)較厚時(shi)，抗剪連接件栓(shuan)釘的(de)焊(han)接質量(liang)(liang)(liang)就很難(nan)保證，焊(han)接時(shi)，宜(yi)選用局部除鋅處(chu)理措施(shi)。

鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼板(ban)(ban)是為防(fang)止(zhi)鋼板(ban)(ban)表(biao)面(mian)遭受腐蝕(shi)，延長其使(shi)用(yong)壽命(ming)，在(zai)(zai)鋼板(ban)(ban)表(biao)面(mian)涂(tu)以一層(ceng)金屬鋅(xin)(xin)(xin)(xin)(xin)(xin)，這種涂(tu)鋅(xin)(xin)(xin)(xin)(xin)(xin)的薄鋼板(ban)(ban)稱(cheng)為鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)板(ban)(ban)。鋼板(ban)(ban)也是用(yong)熱(re)(re)浸法(fa)制(zhi)(zhi)造(zao)，但(dan)在(zai)(zai)出(chu)槽(cao)后，立即(ji)把(ba)它(ta)加熱(re)(re)到500℃左右(you)，使(shi)其生(sheng)成鋅(xin)(xin)(xin)(xin)(xin)(xin)和(he)鐵(tie)的合(he)金被膜(mo)。這種鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)卷(juan)具(ju)(ju)有(you)良好的涂(tu)料的密(mi)著性(xing)(xing)和(he)焊接性(xing)(xing)。合(he)金化鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼板(ban)(ban)。這種鋼板(ban)(ban)也是用(yong)熱(re)(re)浸法(fa)制(zhi)(zhi)造(zao)，但(dan)在(zai)(zai)出(chu)槽(cao)后，立即(ji)把(ba)它(ta)加熱(re)(re)到500℃左右(you)，使(shi)其生(sheng)成鋅(xin)(xin)(xin)(xin)(xin)(xin)和(he)鐵(tie)的合(he)金被膜(mo)。這種鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)板(ban)(ban)具(ju)(ju)有(you)良好的涂(tu)料的密(mi)著性(xing)(xing)和(he)焊接性(xing)(xing)。熱(re)(re)浸鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼板(ban)(ban)。將薄鋼板(ban)(ban)浸入熔(rong)解的鋅(xin)(xin)(xin)(xin)(xin)(xin)槽(cao)中(zhong)，使(shi)其表(biao)面(mian)粘附一層(ceng)鋅(xin)(xin)(xin)(xin)(xin)(xin)的薄鋼板(ban)(ban)。目前主要采用(yong)連續鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)工藝(yi)生(sheng)產，即(ji)把(ba)成卷(juan)的鋼板(ban)(ban)連續浸在(zai)(zai)熔(rong)解有(you)鋅(xin)(xin)(xin)(xin)(xin)(xin)的鍍(du)(du)槽(cao)中(zhong)制(zhi)(zhi)成鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼板(ban)(ban)。合(he)金、復(fu)合(he)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼板(ban)(ban)。它(ta)是用(yong)鋅(xin)(xin)(xin)(xin)(xin)(xin)和(he)其他金屬如(ru)鉛(qian)、鋅(xin)(xin)(xin)(xin)(xin)(xin)制(zhi)(zhi)成合(he)金乃至(zhi)復(fu)合(he)鍍(du)(du)成的鋼板(ban)(ban)。這種鋼板(ban)(ban)既(ji)具(ju)(ju)有(you)防(fang)銹性(xing)(xing)能(neng)(neng)，又有(you)良好的涂(tu)裝(zhuang)性(xing)(xing)能(neng)(neng)。