選(xuan)擇(ze)防火(huo)卷簾門時(shi)最重要的因素是防火(huo)卷簾門的耐火(huo)極限。防火(huo)卷簾耐火(huo)極限的測試方法有(you)兩種(zhong)：

一(yi)是(shi)防火(huo)(huo)卷(juan)簾(lian)按(an)照(zhao)現行(xing)國(guo)家(jia)標(biao)準GB7633《門和卷(juan)簾(lian)的(de)(de)(de)耐(nai)火(huo)(huo)試驗(yan)方法》進(jin)行(xing)耐(nai)火(huo)(huo)試驗(yan)，包(bao)(bao)括(kuo)背(bei)(bei)(bei)火(huo)(huo)面溫(wen)(wen)(wen)升(sheng)在(zai)內的(de)(de)(de)各項判(pan)定(ding)(ding)(ding)條件(jian)(jian)判(pan)定(ding)(ding)(ding)；二是(shi)同樣按(an)照(zhao)GB7633進(jin)行(xing)耐(nai)火(huo)(huo)試驗(yan)，根(gen)據該標(biao)準中關(guan)于無隔熱保護層(ceng)的(de)(de)(de)鐵皮卷(juan)簾(lian)免測(ce)背(bei)(bei)(bei)火(huo)(huo)面溫(wen)(wen)(wen)升(sheng)的(de)(de)(de)規定(ding)(ding)(ding)和產品標(biao)準《鋼(gang)質防火(huo)(huo)卷(juan)簾(lian)通用技術條件(jian)(jian)》（GB14102－93）的(de)(de)(de)要求，只以距(ju)背(bei)(bei)(bei)火(huo)(huo)面一(yi)定(ding)(ding)(ding)距(ju)離的(de)(de)(de)輻射熱強度和簾(lian)面是(shi)否穿火(huo)(huo)來判(pan)定(ding)(ding)(ding)卷(juan)簾(lian)耐(nai)火(huo)(huo)極限(xian)(xian)的(de)(de)(de)卷(juan)簾(lian)。按(an)照(zhao)不包(bao)(bao)括(kuo)背(bei)(bei)(bei)火(huo)(huo)面溫(wen)(wen)(wen)升(sheng)作耐(nai)火(huo)(huo)極限(xian)(xian)判(pan)定(ding)(ding)(ding)條件(jian)(jian)的(de)(de)(de)非(fei)隔熱防火(huo)(huo)卷(juan)簾(lian)，所得耐(nai)火(huo)(huo)極限(xian)(xian)數據，遠比包(bao)(bao)括(kuo)背(bei)(bei)(bei)火(huo)(huo)面溫(wen)(wen)(wen)升(sheng)作耐(nai)火(huo)(huo)極限(xian)(xian)判(pan)定(ding)(ding)(ding)條件(jian)(jian)的(de)(de)(de)隔熱型防火(huo)(huo)卷(juan)簾(lian)的(de)(de)(de)耐(nai)火(huo)(huo)極限(xian)(xian)要長得多(duo)。

根據測試方法將防(fang)(fang)火(huo)(huo)(huo)(huo)卷(juan)(juan)(juan)(juan)簾(lian)劃分為兩類，即：普通(tong)防(fang)(fang)火(huo)(huo)(huo)(huo)卷(juan)(juan)(juan)(juan)簾(lian)和特級(ji)防(fang)(fang)火(huo)(huo)(huo)(huo)卷(juan)(juan)(juan)(juan)簾(lian)，普通(tong)防(fang)(fang)火(huo)(huo)(huo)(huo)卷(juan)(juan)(juan)(juan)簾(lian)不(bu)以背火(huo)(huo)(huo)(huo)面溫(wen)升為判(pan)定(ding)條件，耐(nai)(nai)火(huo)(huo)(huo)(huo)極限(xian)(xian)不(bu)低(di)于(yu)3h時(shi)，能(neng)達(da)到(dao)隔(ge)(ge)熱防(fang)(fang)火(huo)(huo)(huo)(huo)分隔(ge)(ge)的(de)要(yao)求；而(er)特級(ji)防(fang)(fang)火(huo)(huo)(huo)(huo)卷(juan)(juan)(juan)(juan)簾(lian)以背火(huo)(huo)(huo)(huo)面溫(wen)升為判(pan)定(ding)條件，當耐(nai)(nai)火(huo)(huo)(huo)(huo)極限(xian)(xian)不(bu)低(di)于(yu)3h時(shi)，則具有隔(ge)(ge)熱功能(neng)，能(neng)達(da)到(dao)防(fang)(fang)火(huo)(huo)(huo)(huo)分區(qu)分隔(ge)(ge)的(de)要(yao)求。由于(yu)普通(tong)防(fang)(fang)火(huo)(huo)(huo)(huo)卷(juan)(juan)(juan)(juan)簾(lian)的(de)隔(ge)(ge)火(huo)(huo)(huo)(huo)作用達(da)不(bu)到(dao)防(fang)(fang)火(huo)(huo)(huo)(huo)分區(qu)分隔(ge)(ge)的(de)要(yao)求，若采用這種(zhong)防(fang)(fang)火(huo)(huo)(huo)(huo)卷(juan)(juan)(juan)(juan)簾(lian)，應在(zai)卷(juan)(juan)(juan)(juan)簾(lian)兩側設(she)獨(du)立的(de)閉式(shi)自動噴水系統(tong)或水幕保護。

消(xiao)防(fang)(fang)產品市場防(fang)(fang)火(huo)卷簾生產廠(chang)家眾多(duo)，有(you)的廠(chang)家提(ti)供的普通防(fang)(fang)火(huo)卷簾耐(nai)火(huo)極限可達3h、4h，根據廠(chang)家提(ti)供的數(shu)據及(ji)國(guo)家有(you)關(guan)部(bu)門檢測(ce)報告，一些設計(ji)者(zhe)由(you)于不(bu)清楚防(fang)(fang)火(huo)卷簾的測(ce)試方法，誤以(yi)為(wei)防(fang)(fang)火(huo)卷簾耐(nai)火(huo)極限可達3h、4h就(jiu)可不(bu)設保護設施直接設防(fang)(fang)火(huo)分區(qu)上。