鍍(du)(du)(du)鋅(xin)(xin)方管(guan)(guan)是(shi)(shi)(shi)一種具以(yi)熱(re)(re)軋(ya)或(huo)冷(leng)軋(ya)鍍(du)(du)(du)鋅(xin)(xin)帶鋼(gang)(gang)(gang)(gang)(gang)或(huo)鍍(du)(du)(du)鋅(xin)(xin)卷(juan)板(ban)(ban)為坯料(liao)經冷(leng)彎曲加工(gong)成(cheng)(cheng)型(xing)(xing)后(hou)再(zai)經高頻焊接制成(cheng)(cheng)的(de)方形截面形狀(zhuang)尺寸的(de)空心方形的(de)截面型(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan);或(huo)將(jiang)事(shi)先做好的(de)冷(leng)彎空心型(xing)(xing)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)再(zai)經熱(re)(re)浸鍍(du)(du)(du)鋅(xin)(xin)加工(gong)而成(cheng)(cheng)的(de)鍍(du)(du)(du)鋅(xin)(xin)方矩管(guan)(guan)。鍍(du)(du)(du)鋅(xin)(xin)卷(juan)廠產量隨著(zhu)國民生活水平不(bu)斷(duan)提高和(he)城市化(hua)建設(she)的(de)不(bu)斷(duan)推(tui)進，從(cong)現(xian)在的(de)1.6億(yi)噸每年，增(zeng)加到(dao)3億(yi)噸甚至更(geng)多也不(bu)是(shi)(shi)(shi)什么很遙遠(yuan)的(de)夢想。作為煉鋼(gang)(gang)(gang)(gang)(gang)原料(liao)的(de)鐵礦石與(yu)廢(fei)鋼(gang)(gang)(gang)(gang)(gang)，前者是(shi)(shi)(shi)不(bu)可(ke)的(de)資源，后(hou)者是(shi)(shi)(shi)可(ke)以(yi)循環利用的(de)資源。無(wu)論從(cong)環保(bao)角(jiao)度還是(shi)(shi)(shi)從(cong)鋼(gang)(gang)(gang)(gang)(gang)企的(de)運作成(cheng)(cheng)本上(shang)看，廢(fei)鋼(gang)(gang)(gang)(gang)(gang)都有著(zhu)礦石所無(wu)法(fa)比(bi)擬的(de)優勢。發展高強度熱(re)(re)鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)。隨著(zhu)汽車(che)工(gong)業(ye)逐漸(jian)向、節(jie)能(neng)(neng)方向發展，對汽車(che)用鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)性能(neng)(neng)要求也進一步提高。為了(le)汽車(che)板(ban)(ban)的(de)耐(nai)腐(fu)蝕性，將(jiang)擴大(da)熱(re)(re)鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)(gang)(gang)(gang)板(ban)(ban)的(de)使用率。

重慶鍍(du)(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)(ban)(ban)按生(sheng)產及加工(gong)方法可分為以(yi)下幾類： 熱(re)浸鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。將薄鋼(gang)板(ban)(ban)(ban)(ban)(ban)浸入熔(rong)解的(de)(de)(de)(de)(de)鋅(xin)(xin)槽中，使其表面粘(zhan)附一層(ceng)鋅(xin)(xin)的(de)(de)(de)(de)(de)薄鋼(gang)板(ban)(ban)(ban)(ban)(ban)。目前主要采用連續(xu)鍍(du)(du)(du)鋅(xin)(xin)工(gong)藝(yi)生(sheng)產，即把(ba)成卷的(de)(de)(de)(de)(de)鋼(gang)板(ban)(ban)(ban)(ban)(ban)連續(xu)浸在熔(rong)解有鋅(xin)(xin)的(de)(de)(de)(de)(de)鍍(du)(du)(du)槽中制成鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)； 合(he)(he)金(jin)化鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。為克服(fu)單面未涂鋅(xin)(xin)的(de)(de)(de)(de)(de)缺點，又有一種在另面涂以(yi)薄層(ceng)鋅(xin)(xin)的(de)(de)(de)(de)(de)鍍(du)(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)(ban)(ban)，即雙面差(cha)鍍(du)(du)(du)鋅(xin)(xin)板(ban)(ban)(ban)(ban)(ban)；合(he)(he)金(jin)、復(fu)合(he)(he)鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。它是(shi)用鋅(xin)(xin)和其他金(jin)屬如鉛、鋅(xin)(xin)制成合(he)(he)金(jin)乃至復(fu)合(he)(he)鍍(du)(du)(du)成的(de)(de)(de)(de)(de)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。這種鋼(gang)板(ban)(ban)(ban)(ban)(ban)既具(ju)有防銹性(xing)(xing)能，又有良好的(de)(de)(de)(de)(de)涂裝性(xing)(xing)能。

熱(re)鍍(du)鋅(xin)(xin)生(sheng)產(chan)(chan)(chan)發展(zhan)一直處于滯后狀(zhuang)態。20世(shi)(shi)紀50年代(dai)(dai)到60年代(dai)(dai)陸續建成了(le)13條單(dan)張(zhang)鋼板熔劑法熱(re)鍍(du)鋅(xin)(xin)機組(zu)，能力為(wei)10萬t/a，但(dan)因產(chan)(chan)(chan)量(liang)低、成本(ben)高(gao)、質量(liang)差(cha)、污染環(huan)境、經濟(ji)效益差(cha)等缺(que)陷已先后停、轉產(chan)(chan)(chan)。從20世(shi)(shi)紀70年代(dai)(dai)末，我國才開始(shi)建造大型寬帶熱(re)鍍(du)鋅(xin)(xin)機組(zu)。熱(re)鍍(du)鋅(xin)(xin)帶鋼在我國市場一直是緊缺(que)品種(zhong)。從20世(shi)(shi)紀90年代(dai)(dai)中期以(yi)來，每年都要從國外進口80-100萬t左右。隨著國內經濟(ji)的(de)發展(zhan)，尤其(qi)是汽車、家(jia)電及建筑業的(de)發展(zhan)，對(dui)鍍(du)鋅(xin)(xin)帶鋼的(de)需求量(liang)也大大增加。

用電鍍法制造這種鍍鋅鋼板具有良好的加工性。但鍍層較薄，耐腐蝕性不如熱浸法鍍鋅板；單面鍍和雙面差鍍鋅鋼板。單面鍍鋅鋼板，即只在一面鍍鋅的產品。江北彩涂板在焊接、涂裝、防銹處理、加工等方面，具有比雙面鍍鋅板好的適應性。為克服單面未涂鋅的缺點，又有一種在另面涂以薄層鋅的鍍鋅板，即雙面差鍍鋅板；合金、復合鍍鋅鋼板。彩涂板批發它是(shi)用(yong)(yong)(yong)(yong)鋅(xin)和其(qi)他金屬(shu)如鉛、鋅(xin)制成(cheng)合金乃(nai)至(zhi)復(fu)合鍍(du)成(cheng)的(de)(de)鋼(gang)板(ban)(ban)。這種鋼(gang)板(ban)(ban)既具(ju)有(you)防銹性(xing)能，又有(you)良好的(de)(de)涂裝(zhuang)性(xing)能。 除上述五種外(wai)，還有(you)彩色鍍(du)鋅(xin)鋼(gang)板(ban)(ban)、印花涂裝(zhuang)鍍(du)鋅(xin)鋼(gang)板(ban)(ban)、聚氯乙烯疊層鍍(du)鋅(xin)鋼(gang)板(ban)(ban)等。但目前(qian)常用(yong)(yong)(yong)(yong)的(de)(de)仍為熱(re)浸鍍(du)鋅(xin)板(ban)(ban)。 鍍(du)鋅(xin)鋼(gang)板(ban)(ban)按用(yong)(yong)(yong)(yong)途又可分為一般(ban)用(yong)(yong)(yong)(yong)、屋(wu)頂(ding)用(yong)(yong)(yong)(yong)、建筑外(wai)側板(ban)(ban)用(yong)(yong)(yong)(yong)、結構用(yong)(yong)(yong)(yong)、瓦壟板(ban)(ban)用(yong)(yong)(yong)(yong)、拉(la)伸用(yong)(yong)(yong)(yong)和深沖用(yong)(yong)(yong)(yong)等鍍(du)鋅(xin)鋼(gang)板(ban)(ban)。