樓承(cheng)板(ban)(ban)鋼(gang)結(jie)構柱網(wang)間(jian)距(ju)一(yi)般5~9.0m×8~15m，次(ci)(ci)(ci)梁(liang)間(jian)距(ju)3m，而樓承(cheng)板(ban)(ban)下(xia)料(liao)長度為4.97~8.97m，運(yun)輸與安裝均較困難，尤其是帶(dai)(dai)由(you)圓(yuan)弧區垂(chui)直吊(diao)裝樓承(cheng)板(ban)(ban)，由(you)上(shang)(shang)而下(xia)在次(ci)(ci)(ci)梁(liang)狹間(jian)穿套比較困難，且打亂了次(ci)(ci)(ci)梁(liang)焊接(jie)正常工(gong)序(xu)。控制下(xia)料(liao)長度為3～6m，則可避免垂(chui)直運(yun)輸時(shi)在次(ci)(ci)(ci)梁(liang)間(jian)無法吊(diao)運(yun)的問(wen)題。 樓承(cheng)板(ban)(ban)吊(diao)運(yun)時(shi)采用專用軟吊(diao)索。每次(ci)(ci)(ci)吊(diao)裝時(shi)應(ying)檢查軟吊(diao)索是否有撕裂(lie)、割斷現象。樓承(cheng)板(ban)(ban)擱置在鋼(gang)梁(liang)上(shang)(shang)時(shi)應(ying)防止探頭。鋪(pu)料(liao)時(shi)操作人員(yuan)應(ying)系帶(dai)(dai)，并(bing)保證邊(bian)鋪(pu)設邊(bian)固定在周邊(bian)繩上(shang)(shang)。 焊接(jie)采用熔透點焊連接(jie)，施焊前應(ying)準備(bei)邊(bian)角料(liao)引弧試焊，調整施焊電流.因樓承(cheng)板(ban)(ban)底部無水平模板(ban)(ban)及垂(chui)直支撐，澆筑(zhu)混凝(ning)土時(shi)布料(liao)不宜太集中，采用平板(ban)(ban)振(zhen)搗器及時(shi)分攤振(zhen)搗。

近期(qi)鋼價延(yan)續低迷，隨(sui)著通(tong)國規模的酷暑和旱季到(dao)來(lai)，熱鍍鋅卷板價格商場逐漸(jian)進入需要旺季，海(hai)內(nei)鋼鐵商場或將窄幅調整。在(zai)決(jue)策層兩手抓制(zhi)度(du)措施落(luo)實狀況、貨銀(yin)本(ben)位度(du)定向寬松力度(du)加大的直觀層面(mian)利(li)好牽動下，商場信念逐漸(jian)趨穩(wen)，短(duan)期(qi)海(hai)內(nei)鋼價無望(wang)止跌企穩(wen);另(ling)一上面(mian)，以后鋼價殺跌電能有余，而上漲(zhang)也(ye)仍然(ran)屏障重(zhong)重(zhong)。熱鍍鋅卷板價格價錢或將長期(qi)在(zai)于低位運(yun)行場面(mian)。

冷軋卷價格鍍鋅方管是一種具以熱軋或冷軋鍍鋅帶鋼或鍍鋅卷板為坯料經冷彎曲加工成型后再經高頻焊接制成的方形截面形狀尺寸的空心方形的截面型鋼鋼管；鍍鋅卷或將事先做好的冷彎空心型鋼管再經熱浸鍍鋅加工而成的鍍鋅方矩管。巫山冷軋卷鍍鋅量是表(biao)示鍍鋅板鋅層(ceng)厚度的(de)一個普遍(bian)采用(yong)的(de)有(you)效方法。鍍鋅量的(de)單(dan)位(wei)為g/m2。鍍鋅層(ceng)通過鈍(dun)化處(chu)(chu)理(li)(li)，可減少潮溫(wen)貯運條件下產生(sheng)折銹(xiu)(xiu)蝕(白銹(xiu)(xiu)) 。但這種化學處(chu)(chu)理(li)(li)的(de)防腐蝕性能是有(you)限的(de)，而且，妨礙大多數涂料的(de)附著性。這種處(chu)(chu)理(li)(li)一般不用(yong)在鋅鐵合金(jin)鍍層(ceng)，除(chu)光(guang)整(zheng)表(biao)面外，作為常規(gui)，生(sheng)產廠對(dui)其(qi)他類型(xing)的(de)鍍鋅層(ceng)均進行鈍(dun)化處(chu)(chu)理(li)(li)。

用(yong)(yong)電(dian)鍍(du)(du)(du)(du)法制造這(zhe)種(zhong)(zhong)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)具(ju)有良好的(de)加工(gong)(gong)性(xing)。但鍍(du)(du)(du)(du)層較薄，耐腐蝕性(xing)不如熱(re)浸法鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)；單(dan)面(mian)(mian)鍍(du)(du)(du)(du)和(he)(he)雙(shuang)(shuang)面(mian)(mian)差(cha)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。單(dan)面(mian)(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)，即只在(zai)一(yi)面(mian)(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)的(de)產品。在(zai)焊接(jie)、涂裝、防銹(xiu)處理、加工(gong)(gong)等方面(mian)(mian)，具(ju)有比雙(shuang)(shuang)面(mian)(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)好的(de)適應(ying)性(xing)。為克服單(dan)面(mian)(mian)未(wei)涂鋅(xin)(xin)(xin)(xin)的(de)缺(que)點，又(you)有一(yi)種(zhong)(zhong)在(zai)另面(mian)(mian)涂以薄層鋅(xin)(xin)(xin)(xin)的(de)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)，即雙(shuang)(shuang)面(mian)(mian)差(cha)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)；合(he)金(jin)、復(fu)合(he)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。它是用(yong)(yong)鋅(xin)(xin)(xin)(xin)和(he)(he)其他(ta)金(jin)屬(shu)如鉛、鋅(xin)(xin)(xin)(xin)制成合(he)金(jin)乃至復(fu)合(he)鍍(du)(du)(du)(du)成的(de)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。這(zhe)種(zhong)(zhong)鋼(gang)板(ban)(ban)(ban)(ban)(ban)既具(ju)有防銹(xiu)性(xing)能(neng)，又(you)有良好的(de)涂裝性(xing)能(neng)。 除上述(shu)五種(zhong)(zhong)外，還(huan)有彩(cai)色鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)、印花涂裝鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)、聚氯(lv)乙烯疊層鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)等。但目前常用(yong)(yong)的(de)仍為熱(re)浸鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)板(ban)(ban)(ban)(ban)(ban)。 鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)按用(yong)(yong)途又(you)可分為一(yi)般用(yong)(yong)、屋(wu)頂用(yong)(yong)、建筑外側板(ban)(ban)(ban)(ban)(ban)用(yong)(yong)、結(jie)構(gou)用(yong)(yong)、瓦(wa)壟(long)板(ban)(ban)(ban)(ban)(ban)用(yong)(yong)、拉伸用(yong)(yong)和(he)(he)深(shen)沖用(yong)(yong)等鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)(ban)。

熱鍍鋅(xin)卷板價格(ge)行業(ye)統(tong)計(ji)數(shu)據顯示(shi)，十(shi)一月國(guo)內粗鋼(gang)(gang)(gang)日(ri)均產量為兩百(bai)零九萬(wan)噸(dun)，環比下降3.3%，創出今(jin)年以來(lai)水平(ping)，但是(shi)當前減產受到季(ji)節(jie)性因素(su)支撐，市場(chang)(chang)對數(shu)據有效性提出質(zhi)疑。鍍鋅(xin)卷工(gong)業(ye)品(pin)(pin)而言，近期陸續公(gong)布的(de)(de)重要數(shu)據中性偏多。但值(zhi)得注意的(de)(de)是(shi)，同年十(shi)一月熱鍍鋅(xin)卷板價格(ge)工(gong)業(ye)增加值(zhi)和投資增速(su)放緩，進一步印證了(le)國(guo)內總需求乏力，工(gong)業(ye)復(fu)蘇形勢不容樂(le)觀。加上未(wei)來(lai)經(jing)濟結構調整等因素(su)，工(gong)業(ye)品(pin)(pin)價格(ge)反彈高度將有限。傳統(tong)需求淡季(ji)效應還在持續不斷(duan)地發酵，冬儲效果(guo)不佳。雖然數(shu)據顯示(shi)供應壓力開始(shi)減輕(qing)，但是(shi)目前處(chu)于(yu)鋼(gang)(gang)(gang)鐵需求淡季(ji)，市場(chang)(chang)成交萎縮(suo)，下游采購(gou)遲(chi)遲(chi)未(wei)能有效跟進，市場(chang)(chang)信心不足，鍍鋅(xin)鋼(gang)(gang)(gang)板貿(mao)易商囤(dun)貨現象也(ye)不明顯。