樓承(cheng)板(ban)鍍(du)(du)(du)鋅(xin)(xin)(xin)首(shou)要起(qi)到防(fang)腐的(de)(de)(de)效(xiao)果，按標準組(zu)(zu)合(he)(he)樓板(ban)與非組(zu)(zu)合(he)(he)樓板(ban)壓型(xing)鋼板(ban)應選(xuan)用(yong)(yong)熱鍍(du)(du)(du)鋅(xin)(xin)(xin)，不該選(xuan)用(yong)(yong)電鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼板(ban)，其雙面鍍(du)(du)(du)鋅(xin)(xin)(xin)層總含量(liang)(liang)要滿足在使(shi)用(yong)(yong)期間不致銹(xiu)損的(de)(de)(de)要求(qiu)。當(dang)作為(wei)(wei)非組(zu)(zu)合(he)(he)樓承(cheng)板(ban)時(shi)(shi)(shi)，鍍(du)(du)(du)鋅(xin)(xin)(xin)層含量(liang)(liang)可選(xuan)用(yong)(yong)較低值(zhi)(zhi);當(dang)為(wei)(wei)組(zu)(zu)合(he)(he)樓承(cheng)板(ban)時(shi)(shi)(shi)，鍍(du)(du)(du)鋅(xin)(xin)(xin)層含量(liang)(liang)不該小(xiao)于(yu)150g/m2。當(dang)為(wei)(wei)組(zu)(zu)合(he)(he)樓板(ban)且使(shi)用(yong)(yong)環境條件較為(wei)(wei)惡劣時(shi)(shi)(shi)，鍍(du)(du)(du)鋅(xin)(xin)(xin)層含量(liang)(liang)應選(xuan)用(yong)(yong)上限值(zhi)(zhi)或更(geng)(geng)高值(zhi)(zhi)。更(geng)(geng)高的(de)(de)(de)鍍(du)(du)(du)鋅(xin)(xin)(xin)要求(qiu)，如雙面鍍(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)為(wei)(wei)300g/m2、350g/m2或鍍(du)(du)(du)鋁(lv)鋅(xin)(xin)(xin)(5%鋁(lv))275g/m2、300g/m2等，較高的(de)(de)(de)鍍(du)(du)(du)層量(liang)(liang)使(shi)組(zu)(zu)合(he)(he)樓板(ban)有更(geng)(geng)長耐(nai)久性(xing)，同等量(liang)(liang)的(de)(de)(de)鍍(du)(du)(du)鋁(lv)鋅(xin)(xin)(xin)的(de)(de)(de)防(fang)銹(xiu)蝕才能大約兩倍于(yu)一般熱鍍(du)(du)(du)鋅(xin)(xin)(xin)。鍍(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)也不是(shi)越厚越好(hao)，當(dang)鍍(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)較厚時(shi)(shi)(shi)，抗剪(jian)連接件栓釘的(de)(de)(de)焊接質量(liang)(liang)就很難保證，焊接時(shi)(shi)(shi)，宜(yi)選(xuan)用(yong)(yong)局部除鋅(xin)(xin)(xin)處(chu)理措施。

鍍(du)(du)鋅(xin)(xin)(xin)(xin)方管是(shi)(shi)一種具(ju)以(yi)熱軋或冷軋鍍(du)(du)鋅(xin)(xin)(xin)(xin)帶鋼(gang)(gang)(gang)或鍍(du)(du)鋅(xin)(xin)(xin)(xin)卷(juan)板為(wei)坯(pi)料經(jing)冷彎(wan)曲加(jia)工成型后再經(jing)高頻焊接制(zhi)成的(de)(de)(de)方形(xing)截面(mian)(mian)形(xing)狀尺寸的(de)(de)(de)空心(xin)方形(xing)的(de)(de)(de)截面(mian)(mian)型鋼(gang)(gang)(gang)鋼(gang)(gang)(gang)管；鍍(du)(du)鋅(xin)(xin)(xin)(xin)卷(juan)或將事先做好的(de)(de)(de)冷彎(wan)空心(xin)型鋼(gang)(gang)(gang)管再經(jing)熱浸鍍(du)(du)鋅(xin)(xin)(xin)(xin)加(jia)工而(er)成的(de)(de)(de)鍍(du)(du)鋅(xin)(xin)(xin)(xin)方矩管。鍍(du)(du)鋅(xin)(xin)(xin)(xin)量是(shi)(shi)表(biao)示(shi)鍍(du)(du)鋅(xin)(xin)(xin)(xin)板鋅(xin)(xin)(xin)(xin)層厚度的(de)(de)(de)一個(ge)普遍采用的(de)(de)(de)有效方法。鍍(du)(du)鋅(xin)(xin)(xin)(xin)量的(de)(de)(de)單(dan)位為(wei)g/m2。鍍(du)(du)鋅(xin)(xin)(xin)(xin)層通過鈍化處理(li)，可減少潮溫(wen)貯運條件下產(chan)生折(zhe)銹蝕(白銹) 。但這種化學處理(li)的(de)(de)(de)防腐蝕性能是(shi)(shi)有限的(de)(de)(de)，而(er)且(qie)，妨礙大(da)多數(shu)涂料的(de)(de)(de)附著性。這種處理(li)一般(ban)不(bu)用在鋅(xin)(xin)(xin)(xin)鐵合(he)金鍍(du)(du)層，除光整表(biao)面(mian)(mian)外(wai)，作為(wei)常規(gui)，生產(chan)廠對其他類型的(de)(de)(de)鍍(du)(du)鋅(xin)(xin)(xin)(xin)層均進行鈍化處理(li)。

首(shou)先，在(zai)(zai)鋼(gang)結構樓層板(ban)中要(yao)達(da)到(dao)耐火1.5小(xiao)時，總(zong)的來說可(ke)以(yi)選擇開(kai)口(kou)板(ban)、縮口(kou)板(ban)、閉(bi)(bi)口(kou)板(ban)三大類(lei)。規范上混凝土(tu)要(yao)高(gao)于(yu)開(kai)口(kou)板(ban)肋(lei)頂之(zhi)上80mm，并且板(ban)底需配置板(ban)底受(shou)力(li)筋。還(huan)(huan)有一種就(jiu)是再開(kai)口(kou)板(ban)底部(bu)刷(shua)防(fang)火涂料，涂料厚(hou)(hou)度大于(yu)等(deng)于(yu)15,這樣的話，只要(yao)達(da)到(dao)構造要(yao)求(qiu)高(gao)于(yu)肋(lei)頂5公分就(jiu)可(ke)以(yi)了(le)。而縮口(kou)板(ban)和閉(bi)(bi)口(kou)板(ban)，只需要(yao)總(zong)的樓板(ban)厚(hou)(hou)度大于(yu)等(deng)于(yu)110即可(ke)，但是縮口(kou)板(ban)雖然在(zai)(zai)防(fang)火方面(mian)比(bi)開(kai)口(kou)板(ban)要(yao)好。但是底部(bu)還(huan)(huan)是需要(yao)加板(ban)底受(shou)力(li)筋，而閉(bi)(bi)口(kou)板(ban)則不(bu)需要(yao)。

鍍鋅鋼管批發鍍鋅鋼板是為防止鋼板表面遭受腐蝕，延長其使用壽命，在鋼板表面涂以一層金屬鋅，這種涂鋅的薄鋼板稱為鍍鋅板。攀鋼鍍鋅鋼管批發按生(sheng)產(chan)及(ji)加(jia)工方法可分為以下幾(ji)類：熱浸(jin)鍍(du)(du)(du)鋅(xin)鋼板(ban)(ban)。將薄(bo)鋼板(ban)(ban)浸(jin)入熔 微商貨源解(jie)的(de)(de)(de)鋅(xin)槽(cao)中，使其表面粘(zhan)附一(yi)層鋅(xin)的(de)(de)(de)薄(bo)鋼板(ban)(ban)。目(mu)前主要(yao)采用連續鍍(du)(du)(du)鋅(xin)工藝(yi)生(sheng)產(chan)，即把成卷的(de)(de)(de)鋼板(ban)(ban)連續浸(jin)在熔解(jie)有(you)鋅(xin)的(de)(de)(de)鍍(du)(du)(du)槽(cao)中制成鍍(du)(du)(du)鋅(xin)鋼板(ban)(ban)；合金化鍍(du)(du)(du)鋅(xin)鋼板(ban)(ban)。這種鋼板(ban)(ban)也是用熱浸(jin)法制造，但在出槽(cao)后，立即把它加(jia)熱到５００℃左右(you)，使其生(sheng)成鋅(xin)和鐵的(de)(de)(de)合金被膜。這種鍍(du)(du)(du)鋅(xin)板(ban)(ban)具(ju)有(you)良(liang)好的(de)(de)(de)涂料(liao)的(de)(de)(de)密著性和焊(han)接性。

近期(qi)(qi)鋼(gang)(gang)(gang)價延(yan)續低迷，隨著通國規模(mo)的酷暑(shu)和旱季到(dao)來，熱鍍鋅卷板價格商場逐漸(jian)進(jin)入需要旺季，海(hai)內(nei)鋼(gang)(gang)(gang)鐵商場或將窄幅調整。在決策層(ceng)兩手抓制度措(cuo)施(shi)落實(shi)狀況、貨銀本位(wei)度定向寬(kuan)松力度加大的直(zhi)觀層(ceng)面(mian)利好牽動下，商場信念(nian)逐漸(jian)趨穩，短期(qi)(qi)海(hai)內(nei)鋼(gang)(gang)(gang)價無望止跌企穩;另一上面(mian)，以(yi)后(hou)鋼(gang)(gang)(gang)價殺跌電能有余，而上漲也仍然屏(ping)障重重。熱鍍鋅卷板價格價錢或將長期(qi)(qi)在于(yu)低位(wei)運行場面(mian)。

鍍(du)(du)(du)鋅(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)按(an)用(yong)(yong)(yong)(yong)(yong)途又可(ke)分為一(yi)般用(yong)(yong)(yong)(yong)(yong)、屋頂用(yong)(yong)(yong)(yong)(yong)、建筑外(wai)側(ce)板(ban)(ban)用(yong)(yong)(yong)(yong)(yong)、結(jie)構用(yong)(yong)(yong)(yong)(yong)、瓦(wa)壟板(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)鋅(xin)(xin)(xin)鋼(gang)(gang)板(ban)(ban)。對于一(yi)般防(fang)保(bao)護(hu)用(yong)(yong)(yong)(yong)(yong)鍍(du)(du)(du)層(ceng)，可(ke)以(yi)采用(yong)(yong)(yong)(yong)(yong)堿性鋅(xin)(xin)(xin)酸鹽鍍(du)(du)(du)鋅(xin)(xin)(xin)彩(cai)色(se)鈍(dun)化(hua)(hua)工(gong)藝。有(you)時為了(le)產(chan)品的(de)配色(se)需要，也可(ke)以(yi)采用(yong)(yong)(yong)(yong)(yong)藍白色(se)鈍(dun)化(hua)(hua)工(gong)藝，比如軍綠色(se)鈍(dun)化(hua)(hua)、黑色(se)鈍(dun)化(hua)(hua)等。為提高鋼(gang)(gang)管(guan)的(de)耐腐蝕(shi)性能(neng)，對一(yi)般鋼(gang)(gang)管(guan)進行鍍(du)(du)(du)鋅(xin)(xin)(xin)。鍍(du)(du)(du)鋅(xin)(xin)(xin)卷分熱鍍(du)(du)(du)鋅(xin)(xin)(xin)和電鍍(du)(du)(du)鋅(xin)(xin)(xin)兩(liang)種，熱鍍(du)(du)(du)鋅(xin)(xin)(xin)鍍(du)(du)(du)鋅(xin)(xin)(xin)層(ceng)厚，電鍍(du)(du)(du)鋅(xin)(xin)(xin)成本低(di)，表面不(bu)是很光滑(hua)。吹氧焊(han)管(guan)：用(yong)(yong)(yong)(yong)(yong)作煉鋼(gang)(gang)吹氧用(yong)(yong)(yong)(yong)(yong)管(guan)，一(yi)般用(yong)(yong)(yong)(yong)(yong)小口徑的(de)焊(han)接鋼(gang)(gang)管(guan)，規格由(you)3/8-2寸八種。用(yong)(yong)(yong)(yong)(yong)08、10、15、20或者195-Q235的(de)鋼(gang)(gang)帶制(zhi)作成的(de)，為了(le)防(fang)腐蝕(shi)，有(you)得進行滲鋁處理。鍍(du)(du)(du)鋅(xin)(xin)(xin)其防(fang)護(hu)作用(yong)(yong)(yong)(yong)(yong)更強(qiang)，抗腐蝕(shi)能(neng)力強(qiang)。整個結(jie)構由(you)鋅(xin)(xin)(xin)，形成致密(mi)的(de)四元結(jie)晶體，此(ci)結(jie)晶體在鋼(gang)(gang)板(ban)(ban)上形成一(yi)層(ceng)屏障(zhang)(zhang)， 因而(er)有(you)效的(de)防(fang)止腐蝕(shi)因子穿透。 耐腐蝕(shi)性來自鋅(xin)(xin)(xin)的(de)障(zhang)(zhang)礙層(ceng)保(bao)護(hu)功(gong)能(neng)強(qiang)。