近期鋼價(jia)(jia)延續低迷，隨(sui)著通國規模的酷暑(shu)和旱季到來，熱鍍鋅卷板(ban)價(jia)(jia)格(ge)商場(chang)(chang)逐漸進入需要旺季，海內鋼鐵商場(chang)(chang)或將(jiang)窄(zhai)幅調整。在決(jue)策層兩手(shou)抓制(zhi)度措施落(luo)實狀況、貨銀(yin)本位度定向寬松力度加(jia)大的直觀層面利好牽動下，商場(chang)(chang)信(xin)念逐漸趨(qu)穩，短期海內鋼價(jia)(jia)無望止跌企(qi)穩;另一(yi)上面，以后鋼價(jia)(jia)殺跌電能有余(yu)，而上漲也仍然屏障重(zhong)重(zhong)。熱鍍鋅卷板(ban)價(jia)(jia)格(ge)價(jia)(jia)錢或將(jiang)長期在于低位運行場(chang)(chang)面。

鍍(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)為基(ji)板(ban)(ban)(ban)(ban)的(de)(de)(de)(de)(de)彩涂(tu)(tu)(tu)(tu)(tu)鋼(gang)(gang)板(ban)(ban)(ban)(ban)，除有鋅(xin)保(bao)護外，鋅(xin)層(ceng)(ceng)上的(de)(de)(de)(de)(de)有機涂(tu)(tu)(tu)(tu)(tu)層(ceng)(ceng)起了覆蓋隔(ge)離作(zuo)用，可防(fang)止鋼(gang)(gang)板(ban)(ban)(ban)(ban)生銹，使用壽命比鍍(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)更長，據(ju)介紹涂(tu)(tu)(tu)(tu)(tu)層(ceng)(ceng)鋼(gang)(gang)板(ban)(ban)(ban)(ban)的(de)(de)(de)(de)(de)使用壽命比鍍(du)鋅(xin)鋼(gang)(gang)板(ban)(ban)(ban)(ban)長50%。在(zai)連續機組(zu)上以(yi)冷軋(ya)帶鋼(gang)(gang)，鍍(du)鋅(xin)帶鋼(gang)(gang)（電鍍(du)鋅(xin)和熱(re)鍍(du)鋅(xin)）為基(ji)板(ban)(ban)(ban)(ban)，經過(guo)(guo)表(biao)面預(yu)處理(li)（脫(tuo)脂和化(hua)學處理(li)），用輥涂(tu)(tu)(tu)(tu)(tu)的(de)(de)(de)(de)(de)方(fang)法(fa)，涂(tu)(tu)(tu)(tu)(tu)上一層(ceng)(ceng)或多層(ceng)(ceng)液(ye)態(tai)涂(tu)(tu)(tu)(tu)(tu)料，經過(guo)(guo)烘烤和冷卻所得的(de)(de)(de)(de)(de)板(ban)(ban)(ban)(ban)材即(ji)為涂(tu)(tu)(tu)(tu)(tu)層(ceng)(ceng)鋼(gang)(gang)板(ban)(ban)(ban)(ban)。由于(yu)涂(tu)(tu)(tu)(tu)(tu)層(ceng)(ceng)可以(yi)有各(ge)種(zhong)不同(tong)的(de)(de)(de)(de)(de)顏(yan)色，習慣上把涂(tu)(tu)(tu)(tu)(tu)層(ceng)(ceng)鋼(gang)(gang)板(ban)(ban)(ban)(ban)叫做(zuo)彩色涂(tu)(tu)(tu)(tu)(tu)層(ceng)(ceng)鋼(gang)(gang)板(ban)(ban)(ban)(ban)。又由于(yu)涂(tu)(tu)(tu)(tu)(tu)層(ceng)(ceng)是在(zai)鋼(gang)(gang)板(ban)(ban)(ban)(ban)成型加(jia)工(gong)之前進行(xing)的(de)(de)(de)(de)(de)，在(zai)國外這叫做(zuo)預(yu)涂(tu)(tu)(tu)(tu)(tu)層(ceng)(ceng)鋼(gang)(gang)板(ban)(ban)(ban)(ban)。

鍍(du)(du)鋅(xin)鋼板(ban)(ban)按用(yong)(yong)(yong)途(tu)又(you)可分為一般(ban)用(yong)(yong)(yong)、屋頂用(yong)(yong)(yong)、建(jian)筑(zhu)外(wai)側板(ban)(ban)用(yong)(yong)(yong)、結構用(yong)(yong)(yong)、瓦壟板(ban)(ban)用(yong)(yong)(yong)、拉伸用(yong)(yong)(yong)和深沖用(yong)(yong)(yong)等(deng)鍍(du)(du)鋅(xin)鋼板(ban)(ban)。熱鍍(du)(du)鋅(xin)板(ban)(ban)主要應用(yong)(yong)(yong)于建(jian)筑(zhu)外(wai)用(yong)(yong)(yong)，建(jian)筑(zhu)內用(yong)(yong)(yong)，民用(yong)(yong)(yong)，門窗，家具，機械，電子及家用(yong)(yong)(yong)電器等(deng)領域。也有機箱用(yong)(yong)(yong)這(zhe)個(ge)，不過(guo)(guo)熱鍍(du)(du)鋅(xin)板(ban)(ban)不放輻射的(de)。空調，冰箱，微波爐及其類(lei)似家電背面的(de)那個(ge)板(ban)(ban)就是(shi)熱鍍(du)(du)鋅(xin)板(ban)(ban)。鍍(du)(du)鋅(xin)層通過(guo)(guo)鈍化(hua)(hua)處(chu)理，可減(jian)少潮溫(wen)貯(zhu)運(yun)條件下產生折銹蝕(shi)(白銹) 。但(dan)這(zhe)種化(hua)(hua)學處(chu)理的(de)防腐蝕(shi)性能是(shi)有限(xian)的(de)，而且，妨礙大多數涂料(liao)的(de)附著性。這(zhe)種處(chu)理一般(ban)不用(yong)(yong)(yong)在鋅(xin)鐵(tie)合金(jin)鍍(du)(du)層，除光(guang)整表面外(wai)，作為常(chang)規，生產廠對其他類(lei)型的(de)鍍(du)(du)鋅(xin)層均進行(xing)鈍化(hua)(hua)處(chu)理。

重慶樓承(cheng)(cheng)(cheng)板(ban)(ban)分兩種(zhong)(zhong)。一(yi)(yi)(yi)種(zhong)(zhong)是把(ba)樓承(cheng)(cheng)(cheng)板(ban)(ban)當做承(cheng)(cheng)(cheng)受(shou)拉力(li)的(de)(de)鋼筋(jin)計(ji)算(suan)的(de)(de)，另外一(yi)(yi)(yi)種(zhong)(zhong)是僅(jin)把(ba)樓承(cheng)(cheng)(cheng)板(ban)(ban)作(zuo)(zuo)為模(mo)板(ban)(ban)計(ji)算(suan)而不參(can)與受(shou)力(li)的(de)(de)。做模(mo)板(ban)(ban)計(ji)算(suan)的(de)(de)比較簡單，直接按(an)照(zhao)跨度頂就行了。2米以下(xia)選(xuan)0.8的(de)(de)，2-3米的(de)(de)選(xuan)1.0的(de)(de)。樓承(cheng)(cheng)(cheng)板(ban)(ban)作(zuo)(zuo)為受(shou)力(li)鋼筋(jin)計(ji)算(suan)，就按(an)照(zhao)模(mo)板(ban)(ban)的(de)(de)選(xuan)用樓承(cheng)(cheng)(cheng)板(ban)(ban)（或者加厚且(qie)只能(neng)加厚），然后在計(ji)算(suan)配筋(jin)的(de)(de)時候可以按(an)照(zhao)面積減少鋼筋(jin)用量。樓承(cheng)(cheng)(cheng)板(ban)(ban)不能(neng)單獨計(ji)算(suan)的(de)(de)，它和整個(ge)(ge)樓板(ban)(ban)是一(yi)(yi)(yi)個(ge)(ge)體(ti)系的(de)(de)。

樓承板價格熱鍍鋅卷板價格行業統計數據顯示，十一月國內粗鋼日均產量為兩百零九萬噸，環比下降3.3%，創出今年以來水平，但是當前減產受到季節性因素支撐，市場對數據有效性提出質疑。眉山樓承板鍍鋅(xin)卷工(gong)(gong)業品而言，近期陸續(xu)公布的(de)重要數據中性(xing)偏多。但值(zhi)得注意的(de)是，同年十一月熱鍍鋅(xin)卷板價格工(gong)(gong)業增加值(zhi)和投資(zi)增速放(fang)緩，進一步(bu)印(yin)證(zheng)了國內(nei)總(zong)需(xu)求乏力，工(gong)(gong)業復蘇形(xing)勢(shi)不(bu)(bu)容樂觀。加上(shang)未來(lai)經濟結構調整等因(yin)素，工(gong)(gong)業品價格反(fan)彈高度將有限。傳(chuan)統需(xu)求淡季效(xiao)應(ying)還在持續(xu)不(bu)(bu)斷地發酵，冬儲(chu)效(xiao)果不(bu)(bu)佳。雖(sui)然(ran)數據顯示供應(ying)壓(ya)力開始減輕，但是目(mu)前(qian)處于鋼鐵需(xu)求淡季，市(shi)場(chang)成交萎縮，下游采(cai)購遲遲未能有效(xiao)跟進，市(shi)場(chang)信心不(bu)(bu)足，鍍鋅(xin)鋼板貿易商囤(dun)貨(huo)現(xian)象也不(bu)(bu)明顯。