巴中C型鋼重慶樓承板的鍍鋅量沒有一個具體的標準，制作壓型鋼板的冷軋鋼卷須連續熱浸鍍鋅（或鍍鋁鋅），鍍（鋁）鋅量視設計要求而定。C型鋼批發樓(lou)承(cheng)板(ban)(ban)用壓型鋼(gang)(gang)(gang)板(ban)(ban)宜選擇熱(re)(re)浸(jin)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)。不(bu)允許(xu)使用電(dian)(dian)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)，電(dian)(dian)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)僅(jin)在(zai)(zai)基(ji)材表面形成保護層，防腐(fu)能(neng)(neng)(neng)力(li)有限。目前市場上有鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)（鍍(du)(du)(du)(du)層含鋁(lv)5%或55%），在(zai)(zai)酸性(xing)環境下的(de)(de)防腐(fu)效果(guo)由于熱(re)(re)浸(jin)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)，但(dan)在(zai)(zai)混凝土(tu)(tu)的(de)(de)堿(jian)性(xing)條件下，鍍(du)(du)(du)(du)鋁(lv)鋅(xin)的(de)(de)防腐(fu)蝕性(xing)能(neng)(neng)(neng)低(di)于熱(re)(re)浸(jin)鍍(du)(du)(du)(du)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)，且鋁(lv)會和(he)混凝土(tu)(tu)發生(sheng)反應，并降低(di)混凝土(tu)(tu)與鋼(gang)(gang)(gang)板(ban)(ban)的(de)(de)粘結性(xing)能(neng)(neng)(neng)。因此參考國外規范(fan)，及國內外工程，行(xing)家壓型鋼(gang)(gang)(gang)板(ban)(ban)不(bu)建議使用鍍(du)(du)(du)(du)鋁(lv)鋅(xin)鋼(gang)(gang)(gang)板(ban)(ban)。

實(shi)現(xian)(xian)了機械(xie)化生(sheng)(sheng)產，有利(li)于鋼(gang)筋排列間距均勻、混凝土保(bao)護層厚度一致，提高了樓(lou)(lou)板的施(shi)工(gong)質量。裝(zhuang)(zhuang)配(pei)式鋼(gang)筋桁架樓(lou)(lou)承板可顯著減少現(xian)(xian)場鋼(gang)筋綁扎工(gong)程量，加快(kuai)施(shi)工(gong)進(jin)度，增加施(shi)工(gong)保(bao)證，實(shi)現(xian)(xian)文明(ming)施(shi)工(gong)。裝(zhuang)(zhuang)配(pei)式模板和(he)連接件拆裝(zhuang)(zhuang)方便，可多次重(zhong)復(fu)利(li)用(yong)，節約鋼(gang)材，符合國家節能(neng)環(huan)保(bao)的要(yao)求(qiu)。鋼(gang)構(gou)自主研發的產品配(pei)套(tao)自動化生(sheng)(sheng)產設備，大大提高了勞動生(sheng)(sheng)產率，有效降低了產品成本，并編制了產品生(sheng)(sheng)產企業標準、設計手冊和(he)節點(dian)構(gou)造圖集(ji)以(yi)及施(shi)工(gong)手冊。并經過多項工(gong)程應用(yong)，各項性能(neng)可以(yi)滿足現(xian)(xian)澆(jiao)鋼(gang)筋混凝土樓(lou)(lou)板承載(zai)力(li)和(he)變形的要(yao)求(qiu)。

要(yao)看整個(ge)樓板(ban)的(de)(de)(de)厚(hou)度(du)來(lai)考慮挑(tiao)選是(shi)(shi)用(yong)(yong)75波(bo)高(gao)(gao)(gao)系(xi)(xi)(xi)(xi)列(lie)的(de)(de)(de)仍是(shi)(shi)51波(bo)高(gao)(gao)(gao)系(xi)(xi)(xi)(xi)列(lie)的(de)(de)(de)，沉默有40系(xi)(xi)(xi)(xi)列(lie)，46系(xi)(xi)(xi)(xi)列(lie)，60系(xi)(xi)(xi)(xi)列(lie)，65波(bo)高(gao)(gao)(gao)系(xi)(xi)(xi)(xi)列(lie)。一般(ban)來(lai)說(shuo)波(bo)高(gao)(gao)(gao)越(yue)低，承載(zai)力(li)就越(yue)低，然(ran)后(hou)就是(shi)(shi)波(bo)峰距離越(yue)大，承載(zai)力(li)就越(yue)小，假(jia)如整個(ge)樓板(ban)厚(hou)度(du)在10公分(fen)(fen)以(yi)內(nei)，好選用(yong)(yong)選用(yong)(yong)波(bo)高(gao)(gao)(gao)40系(xi)(xi)(xi)(xi)列(lie)，整個(ge)樓板(ban)厚(hou)度(du)在10-13公分(fen)(fen)以(yi)內(nei)，好選用(yong)(yong)50波(bo)高(gao)(gao)(gao)系(xi)(xi)(xi)(xi)列(lie)，在13公分(fen)(fen)以(yi)上，好選用(yong)(yong)75系(xi)(xi)(xi)(xi)列(lie)。有些人(ren)會問(wen)，為什(shen)么呀?其實《我國鋼筋(jin)混凝(ning)土修建(jian)規范》里有個(ge)要(yao)求，鋼筋(jin)上面的(de)(de)(de)混泥土保護層(ceng)不能低于2.5cm，就是(shi)(shi)說(shuo)樓承板(ban)自(zi)身的(de)(de)(de)波(bo)高(gao)(gao)(gao)+鋼筋(jin)網的(de)(de)(de)厚(hou)度(du)(一般(ban)2cm)+2.5cm的(de)(de)(de)保護層(ceng)≤樓板(ban)的(de)(de)(de)厚(hou)度(du)。

鍍(du)(du)鋅(xin)(xin)(xin)(xin)帶(dai)鋼(gang)(gang)(gang)的(de)(de)鋅(xin)(xin)(xin)(xin)層(ceng)特(te)性 電鍍(du)(du)鋅(xin)(xin)(xin)(xin)層(ceng)是(shi)不能形(xing)成鋅(xin)(xin)(xin)(xin)花的(de)(de)，熱鍍(du)(du)鋅(xin)(xin)(xin)(xin)層(ceng)則有(you)鋅(xin)(xin)(xin)(xin)花，其形(xing)成過程如(ru)下：當(dang)鍍(du)(du)鋅(xin)(xin)(xin)(xin)帶(dai)從(cong)(cong)鋅(xin)(xin)(xin)(xin)鍋出(chu)來后(hou)，經氣刀(dao)的(de)(de)噴吹，大(da)(da)量(liang)鋅(xin)(xin)(xin)(xin)液被吹回鋅(xin)(xin)(xin)(xin)鍋，這時帶(dai)鋼(gang)(gang)(gang)表(biao)(biao)面(mian)還有(you)純鋅(xin)(xin)(xin)(xin)層(ceng)，呈液 態附在鋼(gang)(gang)(gang)板表(biao)(biao)面(mian)，在鋼(gang)(gang)(gang)板表(biao)(biao)面(mian)形(xing)成大(da)(da)量(liang)結晶核，隨著鋼(gang)(gang)(gang)板上升冷卻(que)(que)，使結晶核慢慢長成鋅(xin)(xin)(xin)(xin)花。冷卻(que)(que)速度越快鋅(xin)(xin)(xin)(xin)花越小，冷卻(que)(que)速度越慢鋅(xin)(xin)(xin)(xin)花越大(da)(da)。熱鍍(du)(du)鋅(xin)(xin)(xin)(xin)帶(dai)鋼(gang)(gang)(gang)在我國市場一直(zhi)是(shi)緊缺品種。從(cong)(cong)20世(shi)紀90年(nian)代中期以來，每年(nian)都要從(cong)(cong)國外進口(kou)80-100萬t左右。隨著國內(nei)經濟的(de)(de)發(fa)展(zhan)，尤其是(shi)汽車(che)、家電及建筑業的(de)(de)發(fa)展(zhan)，對鍍(du)(du)鋅(xin)(xin)(xin)(xin)帶(dai)鋼(gang)(gang)(gang)的(de)(de)需(xu)求(qiu)量(liang)也(ye)大(da)(da)大(da)(da)增(zeng)加(jia)。

鍍(du)(du)(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)板(ban)按用(yong)(yong)(yong)(yong)(yong)(yong)(yong)途又可(ke)分為(wei)一(yi)(yi)般用(yong)(yong)(yong)(yong)(yong)(yong)(yong)、屋頂用(yong)(yong)(yong)(yong)(yong)(yong)(yong)、建筑外(wai)側板(ban)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)、結構(gou)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)、瓦(wa)壟板(ban)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)、拉伸用(yong)(yong)(yong)(yong)(yong)(yong)(yong)和(he)深沖用(yong)(yong)(yong)(yong)(yong)(yong)(yong)等(deng)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)鋼(gang)(gang)板(ban)。對于一(yi)(yi)般防保(bao)護用(yong)(yong)(yong)(yong)(yong)(yong)(yong)鍍(du)(du)(du)(du)(du)層(ceng)，可(ke)以采(cai)(cai)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)堿性鋅(xin)(xin)酸(suan)鹽鍍(du)(du)(du)(du)(du)鋅(xin)(xin)彩色鈍化(hua)工(gong)藝(yi)。有(you)時為(wei)了(le)產(chan)品的(de)(de)配色需(xu)要，也可(ke)以采(cai)(cai)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)藍白色鈍化(hua)工(gong)藝(yi)，比如軍綠色鈍化(hua)、黑(hei)色鈍化(hua)等(deng)。為(wei)提高鋼(gang)(gang)管(guan)(guan)的(de)(de)耐腐(fu)(fu)蝕性能(neng)，對一(yi)(yi)般鋼(gang)(gang)管(guan)(guan)進行鍍(du)(du)(du)(du)(du)鋅(xin)(xin)。鍍(du)(du)(du)(du)(du)鋅(xin)(xin)卷分熱(re)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)和(he)電鍍(du)(du)(du)(du)(du)鋅(xin)(xin)兩種(zhong)，熱(re)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)鍍(du)(du)(du)(du)(du)鋅(xin)(xin)層(ceng)厚，電鍍(du)(du)(du)(du)(du)鋅(xin)(xin)成(cheng)本低，表面不是很光滑。吹氧焊管(guan)(guan)：用(yong)(yong)(yong)(yong)(yong)(yong)(yong)作煉鋼(gang)(gang)吹氧用(yong)(yong)(yong)(yong)(yong)(yong)(yong)管(guan)(guan)，一(yi)(yi)般用(yong)(yong)(yong)(yong)(yong)(yong)(yong)小口徑(jing)的(de)(de)焊接鋼(gang)(gang)管(guan)(guan)，規格由3/8-2寸八種(zhong)。用(yong)(yong)(yong)(yong)(yong)(yong)(yong)08、10、15、20或者195-Q235的(de)(de)鋼(gang)(gang)帶制作成(cheng)的(de)(de)，為(wei)了(le)防腐(fu)(fu)蝕，有(you)得進行滲鋁(lv)處理。鍍(du)(du)(du)(du)(du)鋅(xin)(xin)其防護作用(yong)(yong)(yong)(yong)(yong)(yong)(yong)更(geng)強，抗腐(fu)(fu)蝕能(neng)力(li)強。整個結構(gou)由鋅(xin)(xin)，形成(cheng)致(zhi)密的(de)(de)四(si)元結晶體，此結晶體在(zai)鋼(gang)(gang)板(ban)上形成(cheng)一(yi)(yi)層(ceng)屏障， 因而有(you)效的(de)(de)防止腐(fu)(fu)蝕因子穿透。 耐腐(fu)(fu)蝕性來自鋅(xin)(xin)的(de)(de)障礙層(ceng)保(bao)護功能(neng)強。

熱(re)(re)鍍(du)(du)鋅(xin)生產發展一直處(chu)于滯后(hou)狀態。20世(shi)紀50年(nian)代到60年(nian)代陸續建成了13條單(dan)張(zhang)鋼(gang)板(ban)熔劑法(fa)熱(re)(re)鍍(du)(du)鋅(xin)機組，能力為10萬(wan)t/a，但因產量低、成本高、質(zhi)量差(cha)、污(wu)染環境(jing)、經濟效益差(cha)等缺(que)陷已先后(hou)停、轉產。從(cong)20世(shi)紀70年(nian)代末，我(wo)國(guo)(guo)才(cai)開始建造大(da)型寬(kuan)帶熱(re)(re)鍍(du)(du)鋅(xin)機組。熱(re)(re)鍍(du)(du)鋅(xin)帶鋼(gang)在我(wo)國(guo)(guo)市場一直是緊缺(que)品種(zhong)。從(cong)20世(shi)紀90年(nian)代中期以來(lai)，每年(nian)都要(yao)從(cong)國(guo)(guo)外進口(kou)80-100萬(wan)t左右(you)。隨著國(guo)(guo)內經濟的(de)發展，尤其是汽(qi)車(che)、家(jia)電及建筑業的(de)發展，對(dui)鍍(du)(du)鋅(xin)帶鋼(gang)的(de)需(xu)求量也大(da)大(da)增加。