麗江攀華C型鋼要看整個樓板的厚度來考慮挑選是用75波高系列的仍是51波高系列的，沉默有40系列，46系列，60系列，65波高系列。C型鋼批發一(yi)般來說波高(gao)越低，承載(zai)力(li)就越低，然后就是波峰(feng)距離越大，承載(zai)力(li)就越小，假如(ru)整個(ge)樓(lou)板(ban)厚度(du)在(zai)10公(gong)分以內(nei)，好(hao)選用(yong)選用(yong)波高(gao)40系(xi)列，整個(ge)樓(lou)板(ban)厚度(du)在(zai)10-13公(gong)分以內(nei)，好(hao)選用(yong)50波高(gao)系(xi)列，在(zai)13公(gong)分以上，好(hao)選用(yong)75系(xi)列。有(you)些人會問，為什么呀?其實《我國鋼筋(jin)(jin)混(hun)凝土修建規范》里有(you)個(ge)要求，鋼筋(jin)(jin)上面(mian)的(de)混(hun)泥(ni)土保(bao)護層不能(neng)低于2.5cm，就是說樓(lou)承板(ban)自身的(de)波高(gao)+鋼筋(jin)(jin)網的(de)厚度(du)(一(yi)般2cm)+2.5cm的(de)保(bao)護層≤樓(lou)板(ban)的(de)厚度(du)。

鍍(du)(du)鋅(xin)(xin)(xin)鋼板的(de)(de)表面鍍(du)(du)鋅(xin)(xin)(xin)主要(yao)采用(yong)的(de)(de)方法(fa)是熱鍍(du)(du)鋅(xin)(xin)(xin)。熱鍍(du)(du)鋅(xin)(xin)(xin)是由較古老的(de)(de)熱鍍(du)(du)方法(fa)發展而(er)來(lai)的(de)(de)，自從1836年(nian)法(fa)國把(ba)熱鍍(du)(du)鋅(xin)(xin)(xin)應用(yong)于(yu)工(gong)業以(yi)來(lai)，已經有(you)一百七十年(nian)的(de)(de)歷史了。然(ran)而(er)，熱鍍(du)(du)鋅(xin)(xin)(xin)工(gong)業是近三十年(nian)來(lai)伴(ban)隨冷軋帶鋼的(de)(de)飛速(su)發展而(er)得到(dao)了大規模發展。鍍(du)(du)鋅(xin)(xin)(xin)溶液(ye)有(you)氰(qing)(qing)(qing)(qing)(qing)(qing)化(hua)物(wu)(wu)鍍(du)(du)液(ye)和(he)無(wu)(wu)氰(qing)(qing)(qing)(qing)(qing)(qing)鍍(du)(du)液(ye)兩類。氰(qing)(qing)(qing)(qing)(qing)(qing)化(hua)物(wu)(wu)鍍(du)(du)液(ye)中分微(wei)氰(qing)(qing)(qing)(qing)(qing)(qing)、低氰(qing)(qing)(qing)(qing)(qing)(qing)、中氰(qing)(qing)(qing)(qing)(qing)(qing)、和(he)高氰(qing)(qing)(qing)(qing)(qing)(qing)幾類。無(wu)(wu)氰(qing)(qing)(qing)(qing)(qing)(qing)鍍(du)(du)液(ye)有(you)堿性鋅(xin)(xin)(xin)酸鹽鍍(du)(du)液(ye)、銨鹽鍍(du)(du)液(ye)、硫(liu)酸鹽鍍(du)(du)液(ye)及無(wu)(wu)氨氯化(hua)物(wu)(wu)鍍(du)(du)液(ye)等。氰(qing)(qing)(qing)(qing)(qing)(qing)化(hua)鍍(du)(du)鋅(xin)(xin)(xin)溶液(ye)均鍍(du)(du)能力好，得到(dao)的(de)(de)鍍(du)(du)層光滑細致，在生產中被長期采用(yong)。但由于(yu)氰(qing)(qing)(qing)(qing)(qing)(qing)化(hua)物(wu)(wu)劇(ju)毒，對(dui)環境污染嚴重(zhong)，近年(nian)來(lai)已趨向于(yu)采用(yong)低氰(qing)(qing)(qing)(qing)(qing)(qing)、微(wei)氰(qing)(qing)(qing)(qing)(qing)(qing)、無(wu)(wu)氰(qing)(qing)(qing)(qing)(qing)(qing)鍍(du)(du)鋅(xin)(xin)(xin)溶液(ye)。

樓(lou)(lou)(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)(ban)習慣(guan)主體鋼(gang)結構快速施(shi)工(gong)的(de)(de)(de)要求，能夠在(zai)(zai)短時間內提供堅定的(de)(de)(de)作(zuo)(zuo)業渠道，并可采用(yong)(yong)多個樓(lou)(lou)(lou)(lou)(lou)(lou)層(ceng)鋪(pu)設(she)壓型鋼(gang)板(ban)(ban)(ban)(ban)(ban)，分(fen)層(ceng)澆筑混(hun)凝(ning)土(tu)(tu)板(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)流水(shui)施(shi)工(gong)。在(zai)(zai)運用(yong)(yong)階段樓(lou)(lou)(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)(ban)作(zuo)(zuo)為混(hun)凝(ning)土(tu)(tu)樓(lou)(lou)(lou)(lou)(lou)(lou)板(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)受(shou)拉(la)鋼(gang)筋(jin)(jin)，也提高了樓(lou)(lou)(lou)(lou)(lou)(lou)板(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)剛度，節省了鋼(gang)筋(jin)(jin)和(he)混(hun)凝(ning)土(tu)(tu)的(de)(de)(de)用(yong)(yong)量。樓(lou)(lou)(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)(ban)上(shang)(shang)面(mian)(mian)能夠鋪(pu)設(she)保溫，隔音，隔熱，隔振等資料。改進(jin)樓(lou)(lou)(lou)(lou)(lou)(lou)面(mian)(mian)性(xing)能充分(fen)發揮鋼(gang)的(de)(de)(de)杰出(chu)的(de)(de)(de)抗(kang)拉(la)強度和(he)延(yan)性(xing)及混(hun)凝(ning)土(tu)(tu)優良的(de)(de)(de)抗(kang)壓強度和(he)較大的(de)(de)(de)剛度。壓型板(ban)(ban)(ban)(ban)(ban)表面(mian)(mian)壓紋使(shi)(shi)樓(lou)(lou)(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)(ban)與混(hun)凝(ning)土(tu)(tu)之間產(chan)生大的(de)(de)(de)結合力(li)，使(shi)(shi)二(er)者形成整體，配以加勁肋(lei)，使(shi)(shi)樓(lou)(lou)(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)(ban)體系具有高強承(cheng)(cheng)(cheng)載力(li)。在(zai)(zai)懸臂條件下，樓(lou)(lou)(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)(ban)僅作(zuo)(zuo)為性(xing)模板(ban)(ban)(ban)(ban)(ban)。懸挑的(de)(de)(de)長度可根據樓(lou)(lou)(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)截面(mian)(mian)特性(xing)來定。為了避免懸挑板(ban)(ban)(ban)(ban)(ban)的(de)(de)(de)開裂，需(xu)在(zai)(zai)支座處(chu)依結構工(gong)程師的(de)(de)(de)規劃配上(shang)(shang)負筋(jin)(jin)。本公司樓(lou)(lou)(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)(ban)已通過國家固定救活體系及耐火(huo)(huo)構件質量檢(jian)測中(zhong)心的(de)(de)(de)耐火(huo)(huo)檢(jian)測，作(zuo)(zuo)為組合樓(lou)(lou)(lou)(lou)(lou)(lou)承(cheng)(cheng)(cheng)板(ban)(ban)(ban)(ban)(ban)無(wu)需(xu)防火(huo)(huo)噴涂(tu)，因(yin)而大大降低了工(gong)程造價。

熱(re)(re)鍍(du)鋅生產(chan)(chan)發展一直處于(yu)滯后狀(zhuang)態。20世(shi)紀50年代(dai)(dai)到60年代(dai)(dai)陸續建(jian)成了13條(tiao)單(dan)張鋼(gang)板(ban)熔劑法熱(re)(re)鍍(du)鋅機組，能力(li)為10萬t/a，但因產(chan)(chan)量低(di)、成本(ben)高(gao)、質(zhi)量差(cha)、污(wu)染(ran)環境、經濟效(xiao)益差(cha)等(deng)缺陷已先后停、轉產(chan)(chan)。從20世(shi)紀70年代(dai)(dai)末，我(wo)國(guo)才(cai)開(kai)始建(jian)造大(da)型寬帶(dai)熱(re)(re)鍍(du)鋅機組。熱(re)(re)鍍(du)鋅帶(dai)鋼(gang)在我(wo)國(guo)市場(chang)一直是緊(jin)缺品種。從20世(shi)紀90年代(dai)(dai)中期(qi)以來，每年都要從國(guo)外進口80-100萬t左右(you)。隨著(zhu)國(guo)內經濟的發展，尤(you)其(qi)是汽車(che)、家電及建(jian)筑業的發展，對鍍(du)鋅帶(dai)鋼(gang)的需求量也大(da)大(da)增加。

樓承(cheng)板(ban)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)首要起到防(fang)腐(fu)的(de)效果，按(an)標準組(zu)(zu)合(he)(he)(he)樓板(ban)與非(fei)組(zu)(zu)合(he)(he)(he)樓板(ban)壓型鋼(gang)板(ban)應選(xuan)(xuan)用(yong)熱鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)，不(bu)該選(xuan)(xuan)用(yong)電鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)鋼(gang)板(ban)，其雙(shuang)面鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)層(ceng)(ceng)總(zong)含(han)量(liang)(liang)要滿足在使用(yong)期間不(bu)致銹損(sun)的(de)要求(qiu)。當(dang)作為非(fei)組(zu)(zu)合(he)(he)(he)樓承(cheng)板(ban)時(shi)(shi)，鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)層(ceng)(ceng)含(han)量(liang)(liang)可(ke)選(xuan)(xuan)用(yong)較(jiao)(jiao)低(di)值(zhi);當(dang)為組(zu)(zu)合(he)(he)(he)樓承(cheng)板(ban)時(shi)(shi)，鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)層(ceng)(ceng)含(han)量(liang)(liang)不(bu)該小于150g/m2。當(dang)為組(zu)(zu)合(he)(he)(he)樓板(ban)且(qie)使用(yong)環境條件較(jiao)(jiao)為惡劣時(shi)(shi)，鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)層(ceng)(ceng)含(han)量(liang)(liang)應選(xuan)(xuan)用(yong)上限值(zhi)或(huo)更(geng)高(gao)(gao)值(zhi)。更(geng)高(gao)(gao)的(de)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)要求(qiu)，如雙(shuang)面鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)量(liang)(liang)為300g/m2、350g/m2或(huo)鍍(du)(du)鋁(lv)(lv)鋅(xin)(xin)(xin)(xin)(xin)(xin)(5%鋁(lv)(lv))275g/m2、300g/m2等，較(jiao)(jiao)高(gao)(gao)的(de)鍍(du)(du)層(ceng)(ceng)量(liang)(liang)使組(zu)(zu)合(he)(he)(he)樓板(ban)有(you)更(geng)長耐久性，同等量(liang)(liang)的(de)鍍(du)(du)鋁(lv)(lv)鋅(xin)(xin)(xin)(xin)(xin)(xin)的(de)防(fang)銹蝕(shi)才能大(da)約兩倍于一般熱鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)。鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)量(liang)(liang)也(ye)不(bu)是越厚(hou)越好，當(dang)鍍(du)(du)鋅(xin)(xin)(xin)(xin)(xin)(xin)量(liang)(liang)較(jiao)(jiao)厚(hou)時(shi)(shi)，抗剪連接(jie)件栓釘的(de)焊(han)(han)接(jie)質量(liang)(liang)就(jiu)很難保證，焊(han)(han)接(jie)時(shi)(shi)，宜選(xuan)(xuan)用(yong)局部除鋅(xin)(xin)(xin)(xin)(xin)(xin)處理(li)措施。