近期鋼價(jia)(jia)延續低迷(mi)，隨著通(tong)國規模的(de)酷暑(shu)和旱季到來，熱(re)鍍鋅卷(juan)(juan)板價(jia)(jia)格商場(chang)(chang)逐(zhu)漸進(jin)入需要旺(wang)季，海內鋼鐵商場(chang)(chang)或將窄幅(fu)調(diao)整。在決策層(ceng)兩手抓制度(du)措(cuo)施落實狀況、貨銀本位度(du)定向(xiang)寬松力度(du)加大的(de)直(zhi)觀(guan)層(ceng)面利好牽(qian)動下，商場(chang)(chang)信念逐(zhu)漸趨(qu)穩，短期海內鋼價(jia)(jia)無(wu)望止(zhi)跌企穩;另一(yi)上面，以后鋼價(jia)(jia)殺跌電(dian)能有余，而上漲也仍然屏障重重。熱(re)鍍鋅卷(juan)(juan)板價(jia)(jia)格價(jia)(jia)錢或將長期在于低位運行場(chang)(chang)面。

重慶樓承(cheng)板由(you)(you)于在(zai)(zai)高層建(jian)(jian)(jian)筑和大(da)跨度高聳結構方面(mian)的(de)(de)(de)(de)(de)優越性(xing)，使其在(zai)(zai)非居(ju)住建(jian)(jian)(jian)筑領(ling)域得(de)到了(le)廣泛(fan)的(de)(de)(de)(de)(de)應(ying)用(yong)。用(yong)環(huan)保(bao)鋼筋(jin)桁(heng)架樓承(cheng)板建(jian)(jian)(jian)筑的(de)(de)(de)(de)(de)房子比傳統(tong)(tong)房屋的(de)(de)(de)(de)(de)重量要輕(qing)(qing)一(yi)(yi)倍(bei)，運用(yong)面(mian)積也進步(bu)百分之(zhi)五左右，這個(ge)(ge)就(jiu)(jiu)是(shi)(shi)它(ta)一(yi)(yi)大(da)優點自(zi)重輕(qing)(qing)強度高。依據不(bu)完整的(de)(de)(de)(de)(de)統(tong)(tong)計，我(wo)國在(zai)(zai)發作地震(zhen)(zhen)時鋼筋(jin)桁(heng)架樓承(cheng)板建(jian)(jian)(jian)筑的(de)(de)(de)(de)(de)倒塌幾率簡直是(shi)(shi)零，所(suo)以它(ta)的(de)(de)(de)(de)(de)抗震(zhen)(zhen)性(xing)能好也是(shi)(shi)它(ta)的(de)(de)(de)(de)(de)優點之(zhi)一(yi)(yi)，由(you)(you)于鋼筋(jin)桁(heng)架樓承(cheng)板建(jian)(jian)(jian)筑的(de)(de)(de)(de)(de)一(yi)(yi)些構件、墻板等有關的(de)(de)(de)(de)(de)建(jian)(jian)(jian)材都是(shi)(shi)在(zai)(zai)工(gong)(gong)廠里完成的(de)(de)(de)(de)(de)，所(suo)以就(jiu)(jiu)減(jian)少了(le)現場施工(gong)(gong)的(de)(de)(de)(de)(de)工(gong)(gong)作量，縮(suo)短了(le)施工(gong)(gong)的(de)(de)(de)(de)(de)工(gong)(gong)作時間(jian)，很契(qi)合產(chan)業化的(de)(de)(de)(de)(de)請求，這個(ge)(ge)是(shi)(shi)它(ta)的(de)(de)(de)(de)(de)優勢，第三個(ge)(ge)就(jiu)(jiu)是(shi)(shi)它(ta)的(de)(de)(de)(de)(de)可回(hui)收應(ying)用(yong)了(le)，它(ta)能夠(gou)隨意的(de)(de)(de)(de)(de)撤除和建(jian)(jian)(jian)造，關于環(huan)境不(bu)形成污染，還節約(yue)了(le)資源。

重慶(qing)鍍(du)(du)(du)鋅(xin)卷主要有(you)(you)：脫(tuo)落、劃(hua)傷、鈍化(hua)斑(ban)(ban)、鋅(xin)粒、厚(hou)邊、氣(qi)(qi)(qi)刀條痕(hen)、氣(qi)(qi)(qi)刀刮痕(hen)、露鋼(gang)、夾雜、機(ji)械損(sun)傷、鋼(gang)基(ji)性能不(bu)良、浪邊、瓢曲、尺寸不(bu)合、壓印(yin)、鋅(xin)層厚(hou)度(du)不(bu)合、輥印(yin)等(deng)。鋅(xin)層脫(tuo)落的(de)(de)主要原因(yin)有(you)(you)：表面氧(yang)化(hua)、有(you)(you)硅化(hua)合物、冷(leng)扎乳化(hua)液太(tai)(tai)臟(zang)、NOF段(duan)氧(yang)化(hua)氣(qi)(qi)(qi)氛及(ji)保護氣(qi)(qi)(qi)體露點(dian)太(tai)(tai)高、空(kong)燃比(bi)不(bu)合理(li)、氫氣(qi)(qi)(qi)流量(liang)偏(pian)低(di)、爐(lu)子有(you)(you)氧(yang)滲入，帶鋼(gang)入鍋溫(wen)度(du)偏(pian)低(di)，RWP段(duan)爐(lu)壓偏(pian)低(di)及(ji)爐(lu)門(men)吸風(feng)、NOF段(duan)爐(lu)溫(wen)偏(pian)低(di)，油脂蒸發不(bu)盡、鋅(xin)鍋鋁含量(liang)偏(pian)低(di)、機(ji)組速(su)度(du)太(tai)(tai)快、還原不(bu)充分、鋅(xin)液中停留時間太(tai)(tai)短、鍍(du)(du)(du)層偏(pian)厚(hou)。白銹(xiu)和黑(hei)(hei)斑(ban)(ban)產生的(de)(de)原因(yin)有(you)(you)：黑(hei)(hei)斑(ban)(ban)是白銹(xiu)進一步氧(yang)化(hua)形成(cheng)的(de)(de)鍍(du)(du)(du)鋅(xin)板的(de)(de)特點(dian)與(yu)用途(tu)。鍍(du)(du)(du)鋅(xin)卷板是以熱軋(ya)鋼(gang)帶或冷(leng)軋(ya)鋼(gang)帶為(wei)基(ji)板，經(jing)(jing)過連(lian)續熱浸鍍(du)(du)(du)鋅(xin)工藝而生產出來的(de)(de)， 產品(pin)具(ju)有(you)(you)耐(nai)腐(fu)蝕強、 表面質量(liang)好、有(you)(you)利于深加工、經(jing)(jing)濟實(shi)用等(deng)特點(dian)。

北碚熱鍍鋅鋼管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。熱鍍鋅鋼管價格樓(lou)承板(ban)(ban)(ban)(ban)用(yong)壓型鋼(gang)板(ban)(ban)(ban)(ban)宜(yi)選擇(ze)熱浸鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)。不(bu)允許使(shi)用(yong)電(dian)鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)，電(dian)鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)僅(jin)在(zai)基材表面形成保護層，防腐能(neng)力有限(xian)。目(mu)前市(shi)場上有鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)（鍍(du)(du)(du)層含鋁(lv)5%或55%），在(zai)酸性(xing)環(huan)境下的(de)(de)防腐效(xiao)果由于(yu)熱浸鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)，但在(zai)混凝(ning)土的(de)(de)堿(jian)性(xing)條件下，鍍(du)(du)(du)鋁(lv)鋅(xin)(xin)的(de)(de)防腐蝕(shi)性(xing)能(neng)低于(yu)熱浸鍍(du)(du)(du)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)，且(qie)鋁(lv)會和混凝(ning)土發生反應，并降低混凝(ning)土與(yu)鋼(gang)板(ban)(ban)(ban)(ban)的(de)(de)粘結性(xing)能(neng)。因此參考國外規范，及國內(nei)外工程(cheng)，行家(jia)壓型鋼(gang)板(ban)(ban)(ban)(ban)不(bu)建議使(shi)用(yong)鍍(du)(du)(du)鋁(lv)鋅(xin)(xin)鋼(gang)板(ban)(ban)(ban)(ban)。

鍍(du)(du)鋅鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)為基板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)的(de)彩(cai)涂(tu)(tu)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)，除有(you)(you)鋅保(bao)護外，鋅層(ceng)(ceng)上(shang)(shang)的(de)有(you)(you)機(ji)涂(tu)(tu)層(ceng)(ceng)起(qi)了覆蓋隔(ge)離作用，可防止鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)生銹，使(shi)(shi)用壽(shou)命比鍍(du)(du)鋅鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)更長，據介紹涂(tu)(tu)層(ceng)(ceng)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)的(de)使(shi)(shi)用壽(shou)命比鍍(du)(du)鋅鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)長50%。在(zai)連續(xu)機(ji)組(zu)上(shang)(shang)以冷軋帶鋼(gang)，鍍(du)(du)鋅帶鋼(gang)（電鍍(du)(du)鋅和(he)(he)熱鍍(du)(du)鋅）為基板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)，經(jing)過(guo)(guo)表面預處(chu)理（脫脂和(he)(he)化學(xue)處(chu)理），用輥涂(tu)(tu)的(de)方法(fa)，涂(tu)(tu)上(shang)(shang)一(yi)層(ceng)(ceng)或多(duo)層(ceng)(ceng)液態涂(tu)(tu)料(liao)，經(jing)過(guo)(guo)烘(hong)烤和(he)(he)冷卻所得的(de)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)材即為涂(tu)(tu)層(ceng)(ceng)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)。由(you)于(yu)涂(tu)(tu)層(ceng)(ceng)可以有(you)(you)各(ge)種不同的(de)顏(yan)色，習慣上(shang)(shang)把(ba)涂(tu)(tu)層(ceng)(ceng)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)叫(jiao)(jiao)做彩(cai)色涂(tu)(tu)層(ceng)(ceng)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)。又由(you)于(yu)涂(tu)(tu)層(ceng)(ceng)是在(zai)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)成型(xing)加工之(zhi)前進行的(de)，在(zai)國外這(zhe)叫(jiao)(jiao)做預涂(tu)(tu)層(ceng)(ceng)鋼(gang)板(ban)(ban)(ban)(ban)(ban)(ban)(ban)(ban)。