近(jin)期(qi)(qi)鋼價(jia)(jia)(jia)延續低迷，隨(sui)著通國規模的(de)酷(ku)暑和旱季到來(lai)，熱鍍鋅卷(juan)板(ban)價(jia)(jia)(jia)格(ge)商場(chang)逐(zhu)漸進入需要(yao)旺季，海內鋼鐵商場(chang)或將(jiang)窄幅調整。在(zai)決策層兩手抓制度措施(shi)落實狀況(kuang)、貨銀本位度定向寬松力度加大的(de)直觀層面(mian)利好(hao)牽動下，商場(chang)信念逐(zhu)漸趨穩，短期(qi)(qi)海內鋼價(jia)(jia)(jia)無望止跌企(qi)穩;另一上(shang)面(mian)，以后鋼價(jia)(jia)(jia)殺跌電能有余，而上(shang)漲也(ye)仍然屏障(zhang)重重。熱鍍鋅卷(juan)板(ban)價(jia)(jia)(jia)格(ge)價(jia)(jia)(jia)錢(qian)或將(jiang)長(chang)期(qi)(qi)在(zai)于低位運行場(chang)面(mian)。

重慶樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)分兩種。一種是(shi)把樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)當做承(cheng)(cheng)受拉力(li)的(de)(de)(de)(de)(de)鋼(gang)筋(jin)計(ji)算的(de)(de)(de)(de)(de)，另外一種是(shi)僅把樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)作為(wei)模(mo)(mo)板(ban)(ban)(ban)計(ji)算而不參(can)與受力(li)的(de)(de)(de)(de)(de)。做模(mo)(mo)板(ban)(ban)(ban)計(ji)算的(de)(de)(de)(de)(de)比較簡單，直接(jie)按照跨度頂(ding)就行了(le)。2米以下選0.8的(de)(de)(de)(de)(de)，2-3米的(de)(de)(de)(de)(de)選1.0的(de)(de)(de)(de)(de)。樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)作為(wei)受力(li)鋼(gang)筋(jin)計(ji)算，就按照模(mo)(mo)板(ban)(ban)(ban)的(de)(de)(de)(de)(de)選用樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)（或者(zhe)加厚(hou)且只能加厚(hou)），然(ran)后在計(ji)算配(pei)筋(jin)的(de)(de)(de)(de)(de)時候可以按照面積減少鋼(gang)筋(jin)用量。樓(lou)(lou)承(cheng)(cheng)板(ban)(ban)(ban)不能單獨計(ji)算的(de)(de)(de)(de)(de)，它和整個樓(lou)(lou)板(ban)(ban)(ban)是(shi)一個體系(xi)的(de)(de)(de)(de)(de)。

用(yong)(yong)(yong)(yong)(yong)電鍍(du)(du)(du)(du)(du)(du)法(fa)制(zhi)造這(zhe)種鍍(du)(du)(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)具有(you)良(liang)好的加(jia)工性。但鍍(du)(du)(du)(du)(du)(du)層較(jiao)薄，耐腐蝕性不如熱(re)浸法(fa)鍍(du)(du)(du)(du)(du)(du)鋅(xin)板(ban)(ban)(ban)(ban)(ban)；單面(mian)鍍(du)(du)(du)(du)(du)(du)和雙(shuang)面(mian)差鍍(du)(du)(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。單面(mian)鍍(du)(du)(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)，即只在(zai)(zai)一(yi)面(mian)鍍(du)(du)(du)(du)(du)(du)鋅(xin)的產(chan)品。在(zai)(zai)焊(han)接、涂裝(zhuang)、防銹處理、加(jia)工等方(fang)面(mian)，具有(you)比雙(shuang)面(mian)鍍(du)(du)(du)(du)(du)(du)鋅(xin)板(ban)(ban)(ban)(ban)(ban)好的適應(ying)性。為克(ke)服單面(mian)未涂鋅(xin)的缺(que)點，又(you)有(you)一(yi)種在(zai)(zai)另面(mian)涂以薄層鋅(xin)的鍍(du)(du)(du)(du)(du)(du)鋅(xin)板(ban)(ban)(ban)(ban)(ban)，即雙(shuang)面(mian)差鍍(du)(du)(du)(du)(du)(du)鋅(xin)板(ban)(ban)(ban)(ban)(ban)；合金(jin)、復合鍍(du)(du)(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。它是用(yong)(yong)(yong)(yong)(yong)鋅(xin)和其他(ta)金(jin)屬如鉛(qian)、鋅(xin)制(zhi)成合金(jin)乃至復合鍍(du)(du)(du)(du)(du)(du)成的鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。這(zhe)種鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)既具有(you)防銹性能，又(you)有(you)良(liang)好的涂裝(zhuang)性能。 除(chu)上述(shu)五種外(wai)，還有(you)彩色鍍(du)(du)(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、印花涂裝(zhuang)鍍(du)(du)(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)、聚氯(lv)乙烯(xi)疊(die)層鍍(du)(du)(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)等。但目(mu)前常(chang)用(yong)(yong)(yong)(yong)(yong)的仍為熱(re)浸鍍(du)(du)(du)(du)(du)(du)鋅(xin)板(ban)(ban)(ban)(ban)(ban)。 鍍(du)(du)(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)按(an)用(yong)(yong)(yong)(yong)(yong)途(tu)又(you)可(ke)分為一(yi)般用(yong)(yong)(yong)(yong)(yong)、屋頂用(yong)(yong)(yong)(yong)(yong)、建(jian)筑(zhu)外(wai)側板(ban)(ban)(ban)(ban)(ban)用(yong)(yong)(yong)(yong)(yong)、結構用(yong)(yong)(yong)(yong)(yong)、瓦壟板(ban)(ban)(ban)(ban)(ban)用(yong)(yong)(yong)(yong)(yong)、拉伸用(yong)(yong)(yong)(yong)(yong)和深沖用(yong)(yong)(yong)(yong)(yong)等鍍(du)(du)(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)(ban)。

鍍鋅角鋼價格熱鍍鋅生產發展一直處于滯后狀態。20世紀50年代到60年代陸續建成了13條單張鋼板熔劑法熱鍍鋅機組，能力為10萬t/a，但因產量低、成本高、質量差、污染環境、經濟效益差等缺陷已先后停、轉產。從20世紀70年代末，我國才開始建造大型寬帶熱鍍鋅機組。江津鍍鋅角鋼熱鍍(du)鋅帶(dai)鋼在我國市場一直是(shi)緊缺品(pin)種。從20世紀90年代(dai)中期(qi)以來，每年都(dou)要(yao)從國外進(jin)口80-100萬t左右。隨(sui)著國內(nei)經濟的(de)發(fa)展，尤(you)其是(shi)汽(qi)車、家電及建筑業(ye)的(de)發(fa)展，對鍍(du)鋅帶(dai)鋼的(de)需求量也大大增加。