ZHQ建筑排水PVC-U管阻火圈 ZHQ Buliding draining PVC-U pipe firestops collar
阻火圈,该产品主要有金属壳体和阻燃膨胀芯材组成，使用时将阻火圈套在硬聚氯乙烯管的外壁，固定在楼板或墙体部位，火灾发生时，阻火圈内的芯材受热急速膨胀，挤压受热变软的PVC-U管道，在较短的时间内封堵管道贯穿洞口，阻止火势沿洞口蔓延至上一层楼或相邻房间。经国家防火建筑材料质量监督检测中心检测，各项性能指标符合要求，超过同类产品水平。
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.

主要技术性能 Main technical nperfommances

规格型号 Type and specification	尺寸Size			使用管径 Suitable Caliber	备注 Remark
	内径lnternal diameter	外径External diameter	高度Height
ZHQ160	161	206	70	160	尺寸误差为±1 Size error±1
ZHQ110	111	141	36	110	尺寸误差为±1 Size error±1
ZHQ75	76	96	45	75	尺寸误差为±1 Size error±1

阻火圈膨胀芯材的膨胀功能 The expansibility of the expansion core material in the fire barrier ring
 

膨胀体积 Expansion Volume (ml/g)	未经浸泡 Non-immersed	≥10
	浸入水中48h后 lmmersed in water for 48h	≥10
	浸入水泥浆中48h后lmmersed in water-mud for 48h	≥10

耐火性能 Fire resistance
 

项目 ltem	技术指标Technical specification
耐火极限Limit offire resistance	≥180分钟（min）
封堵时间 Time of banking fire	≥15分钟（min）