阻火帶
                                                                                           阻火帶是用雙層不銹鋼卷材中間夾特種防火棉制成的，耐火極限可滿(mǎn)足1小時(shí)-4小時(shí)，
                                                                                           可根據(jù)工程設(shè)計(jì)選用不同等級(jí)的阻火帶，
                                                                                           產(chǎn)品執(zhí)行GB/T9978-1999《建筑構(gòu)件耐火性能實(shí)驗(yàn)方法》。
                                                                                          
                                                                                           阻火帶的安裝

                                                                                           四、擺上阻火帶，在塑料膨脹管位置釘上水泥鋼釘