熱鍍(du)(du)鋅(xin)卷(juan)板價格行業(ye)(ye)統計數(shu)據(ju)(ju)顯(xian)示(shi)，十一月國內粗鋼(gang)日均產量為兩百零九萬噸，環比下降3.3%，創(chuang)出(chu)今年以(yi)來(lai)水平，但是(shi)(shi)當前(qian)減產受到(dao)季節性因素(su)支撐，市場對數(shu)據(ju)(ju)有(you)效性提出(chu)質(zhi)疑。鍍(du)(du)鋅(xin)卷(juan)工(gong)(gong)業(ye)(ye)品而言(yan)，近期陸(lu)續公布的重要(yao)數(shu)據(ju)(ju)中性偏多。但值得注意(yi)的是(shi)(shi)，同(tong)年十一月熱鍍(du)(du)鋅(xin)卷(juan)板價格工(gong)(gong)業(ye)(ye)增加值和(he)投資增速放緩，進一步印證了國內總(zong)需(xu)求乏力(li)，工(gong)(gong)業(ye)(ye)復蘇形勢不(bu)容(rong)樂觀。加上未來(lai)經濟(ji)結(jie)構調整等(deng)因素(su)，工(gong)(gong)業(ye)(ye)品價格反彈高度將有(you)限。傳統需(xu)求淡季效應還在持續不(bu)斷(duan)地(di)發(fa)酵，冬儲效果不(bu)佳。雖然數(shu)據(ju)(ju)顯(xian)示(shi)供(gong)應壓力(li)開始減輕，但是(shi)(shi)目前(qian)處于鋼(gang)鐵需(xu)求淡季，市場成交萎(wei)縮，下游采購遲遲未能有(you)效跟進，市場信(xin)心不(bu)足，鍍(du)(du)鋅(xin)鋼(gang)板貿易(yi)商囤貨現象(xiang)也(ye)不(bu)明顯(xian)。

隨(sui)著鋼結(jie)構(gou)在(zai)建筑材料(liao)中的(de)(de)(de)興起，越來越多的(de)(de)(de)人選擇使用(yong)鋼結(jie)構(gou)樓(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)了(le)，鋼結(jie)構(gou)構(gou)件(jian)工廠產業(ye)化生產大大縮短了(le)工程工期，而樓(lou)(lou)(lou)(lou)板(ban)(ban)(ban)的(de)(de)(de)施工方法(fa)卻(que)成為影響工期的(de)(de)(de)重要(yao)因素。采用(yong)那一(yi)代樓(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)對于樓(lou)(lou)(lou)(lou)板(ban)(ban)(ban)的(de)(de)(de)耐(nai)火性(xing)能也有區(qu)別(bie)。樓(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)的(de)(de)(de)厚度(du)(du)一(yi)般都是(shi)按保(bao)險起見設(she)計的(de)(de)(de)比(bi)較(jiao)厚，正常情況下(xia)鋼梁(liang)之間的(de)(de)(de)跨(kua)度(du)(du)在(zai)2m以(yi)內樓(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)厚度(du)(du)在(zai)0.75-0.8mm就(jiu)(jiu)可(ke)以(yi)了(le)，2-2.5m樓(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)厚度(du)(du)用(yong)0.8-1.0就(jiu)(jiu)可(ke)以(yi)了(le)，跨(kua)度(du)(du)在(zai)3-4米樓(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)厚度(du)(du)用(yong)1.5mm，超(chao)過(guo)5m的(de)(de)(de)跨(kua)度(du)(du)是(shi)用(yong)臨時支撐，因素就(jiu)(jiu)是(shi)混泥(ni)土澆筑的(de)(de)(de)高(gao)度(du)(du)，混泥(ni)土澆筑的(de)(de)(de)越高(gao)，樓(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)所需(xu)要(yao)的(de)(de)(de)厚度(du)(du)也就(jiu)(jiu)越厚，還有一(yi)個(ge)大家容易忽略(lve)的(de)(de)(de)因素就(jiu)(jiu)是(shi)螺釘的(de)(de)(de)好壞也是(shi)決定樓(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)厚度(du)(du)的(de)(de)(de)，螺釘越好樓(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)(cheng)板(ban)(ban)(ban)的(de)(de)(de)承(cheng)(cheng)(cheng)(cheng)載力就(jiu)(jiu)越強。

鍍(du)鋅(xin)是一(yi)種(zhong)經常(chang)采用(yong)(yong)的(de)經濟而有效的(de)防(fang)(fang)腐方法(fa)。鋅(xin)產量的(de)一(yi)半左右(you)均用(yong)(yong)于(yu)此種(zhong)工藝。鍍(du)鋅(xin)卷(juan)是為防(fang)(fang)止(zhi)鋼(gang)板(ban)(ban)表(biao)面(mian)遭受腐蝕延長(chang)其使用(yong)(yong)壽命，在鋼(gang)板(ban)(ban)表(biao)面(mian)涂(tu)以一(yi)層金(jin)屬鋅(xin)，這種(zhong)涂(tu)鋅(xin)的(de)鋼(gang)板(ban)(ban)稱(cheng)為鍍(du)鋅(xin)卷(juan)。鍍(du)鋅(xin)卷(juan)主要用(yong)(yong)于(yu)建筑(zhu)、家(jia)電(dian)、汽車、容器、交通及(ji)家(jia)業等領域。特別是鋼(gang)結構建筑(zhu)、汽車制造、鋼(gang)板(ban)(ban)倉制造等行業。耐(nai)腐蝕強、表(biao)面(mian)質量好、得利(li)于(yu)深加工、經濟實用(yong)(yong)等。有關產品標準(zhun)都列明(ming)鍍(du)鋅(xin)卷(juan)推薦的(de)標準(zhun)厚度(du)、長(chang)度(du)和寬度(du)及(ji)其允許偏(pian)差。鍍(du)鋅(xin)卷(juan)厚度(du)偏(pian)差一(yi)般在0.05mm，長(chang)寬偏(pian)差一(yi)般在5mm ，板(ban)(ban)材的(de)厚度(du)一(yi)般在0.2-3.2之(zhi)間(jian) 。

鍍鋅角鋼批發鍍鋅鋼板的表面鍍鋅主要采用的方法是熱鍍鋅。昭通鍍鋅角鋼熱鍍(du)鋅(xin)(xin)(xin)(xin)是由較(jiao)古老的(de)(de)(de)熱鍍(du)方法(fa)發(fa)(fa)展而(er)(er)來的(de)(de)(de)，自(zi)從1836年(nian)法(fa)國(guo)把(ba)熱鍍(du)鋅(xin)(xin)(xin)(xin)應用(yong)(yong)于(yu)(yu)工(gong)業以來，已(yi)經有(you)一百七十(shi)年(nian)的(de)(de)(de)歷史了。然而(er)(er)，熱鍍(du)鋅(xin)(xin)(xin)(xin)工(gong)業是近(jin)三十(shi)年(nian)來伴隨冷軋(ya)帶鋼的(de)(de)(de)飛(fei)速發(fa)(fa)展而(er)(er)得(de)(de)到了大規模發(fa)(fa)展。鍍(du)鋅(xin)(xin)(xin)(xin)溶(rong)液(ye)有(you)氰(qing)(qing)(qing)(qing)化(hua)(hua)物(wu)(wu)鍍(du)液(ye)和無氰(qing)(qing)(qing)(qing)鍍(du)液(ye)兩類(lei)(lei)。氰(qing)(qing)(qing)(qing)化(hua)(hua)物(wu)(wu)鍍(du)液(ye)中分微(wei)氰(qing)(qing)(qing)(qing)、低氰(qing)(qing)(qing)(qing)、中氰(qing)(qing)(qing)(qing)、和高氰(qing)(qing)(qing)(qing)幾(ji)類(lei)(lei)。無氰(qing)(qing)(qing)(qing)鍍(du)液(ye)有(you)堿性鋅(xin)(xin)(xin)(xin)酸鹽鍍(du)液(ye)、銨鹽鍍(du)液(ye)、硫酸鹽鍍(du)液(ye)及無氨氯化(hua)(hua)物(wu)(wu)鍍(du)液(ye)等。氰(qing)(qing)(qing)(qing)化(hua)(hua)鍍(du)鋅(xin)(xin)(xin)(xin)溶(rong)液(ye)均(jun)鍍(du)能力好，得(de)(de)到的(de)(de)(de)鍍(du)層光滑細致，在生產中被長期采用(yong)(yong)。但由于(yu)(yu)氰(qing)(qing)(qing)(qing)化(hua)(hua)物(wu)(wu)劇毒(du)，對(dui)環境污染嚴重，近(jin)年(nian)來已(yi)趨(qu)向于(yu)(yu)采用(yong)(yong)低氰(qing)(qing)(qing)(qing)、微(wei)氰(qing)(qing)(qing)(qing)、無氰(qing)(qing)(qing)(qing)鍍(du)鋅(xin)(xin)(xin)(xin)溶(rong)液(ye)。