ZHQ建筑排水PVC-U管阻火圈 ZHQ Buliding draining PVC-U pipe firestops collar
阻火圈,該產品主要有金屬殼體和阻燃膨脹芯材組成，使用時將阻火圈套在硬聚氯乙烯管的外壁，固定在樓板或墻體部位，火災發生時，阻火圈內的芯材受熱急速膨脹，擠壓受熱變軟的PVC-U管道，在較短的時間內封堵管道貫穿洞口，阻止火勢沿洞口蔓延至上一層樓或相鄰房間。經國家防火建筑材料質量監督檢測中心檢測，各項性能指標符合要求，超過同類產品水平。
Firestops collar,ZHQ fire barrier ring is made up with metallic shell and inflaming retarding expansive core material When used the fire
barrier ring is fixed on the external face of PVC pipe Which is on the floor or wall When fire happens the core material of fire barrier ring expands quickly to extrude the PVC-U pipeline Which had been heated to become soft in the fire and the pipe will be sealed in a short time.So the fi re will be prevented from spreading to up-floor or next room The product has been tested by the National Fireproof Building
Material Quality Monitoring and Testing Center the results showed that the performance index of the ZHQ fire barrier ring accorded with the
de-mands,and better than the products of the same kind.

主要技術性能 Main technical nperfommances

規格型號 Type and specification	尺寸Size			使用管徑 Suitable Caliber	備注 Remark
	內徑lnternal diameter	外徑External diameter	高度Height
ZHQ160	161	206	70	160	尺寸誤差為±1 Size error±1
ZHQ110	111	141	36	110	尺寸誤差為±1 Size error±1
ZHQ75	76	96	45	75	尺寸誤差為±1 Size error±1

阻火圈膨脹芯材的膨脹功能 The expansibility of the expansion core material in the fire barrier ring
 

膨脹體積 Expansion Volume (ml/g)	未經浸泡 Non-immersed	≥10
	浸入水中48h后 lmmersed in water for 48h	≥10
	浸入水泥漿中48h后lmmersed in water-mud for 48h	≥10

耐火性能 Fire resistance
 

項目 ltem	技術指標Technical specification
耐火極限Limit offire resistance	≥180分鐘（min）
封堵時間 Time of banking fire	≥15分鐘（min）