防排烟系统中seline; color: rgb(56, 166, 166); text-decoration-line: none; outline: 0px; transition-duration: 0.2s; transition-timing-function: ease; text-wrap: wrap; background-color: rgb(255, 255, 255);">风管推荐采用一体式seline; color: rgb(56, 166, 166); text-decoration-line: none; outline: 0px; transition-duration: 0.2s; transition-timing-function: ease; text-wrap: wrap; background-color: rgb(255, 255, 255);">无机漂珠硅晶复合seline; color: rgb(56, 166, 166); text-decoration-line: none; outline: 0px; transition-duration: 0.2s; transition-timing-function: ease; text-wrap: wrap; background-color: rgb(255, 255, 255);">风管,seline; color: rgb(56, 166, 166); text-decoration-line: none; outline: 0px; transition-duration: 0.2s; transition-timing-function: ease; text-wrap: wrap; background-color: rgb(255, 255, 255);">风管由双面耐腐蚀金属彩钢板复合一体板制成，板芯采用轻体硬质漂珠硅晶耐火隔热板,芯材密度260KG/M3≤450KG/M3，芯材抗折强度≥1.91MPa，芯材导热系数：25℃常温时≤0.05W/m·K，1000℃高温时≤0.13W/m·K,seline; color: rgb(56, 166, 166); text-decoration-line: none; outline: 0px; transition-duration: 0.2s; transition-timing-function: ease; text-wrap: wrap; background-color: rgb(255, 255, 255);">风管耐火极限判定必须满足：GB/T17428关于耐火完整性和隔热性要求，seline; color: rgb(56, 166, 166); text-decoration-line: none; outline: 0px; transition-duration: 0.2s; transition-timing-function: ease; text-wrap: wrap; background-color: rgb(255, 255, 255);">风管需通过耐火极限型式检验、抗风压3000pa检验，法兰采用钢制一体法兰，法兰内外与钢板连接的侧边和seline; color: rgb(56, 166, 166); text-decoration-line: none; outline: 0px; transition-duration: 0.2s; transition-timing-function: ease; text-wrap: wrap; background-color: rgb(255, 255, 255);">风管之间连接的法兰边必须保障一体(耐火极限产品为成品，不得擅自组装)。
