nba五大联赛体育电竞交流 www.hamidsardar.com 产品简介：

   QB型防爆吊钩桥式起重机所有电机，电器防爆性能符合GB3836.2-2000《爆炸性气体环境用防爆电气设备第二部分：隔爆型‘D'》，整机符合JB/T5897-2006《防爆桥式起重机》标准之规定，经国家指定的防爆产品检验单位检验合格，取得了《防小爆合格证》。防爆标志分别为Exd2BT4，Exd2CT4.

   QB型防爆吊钩桥式起重机适用于工厂内传爆能力不高于2B或2C 级，引燃温度组别T1~T4 组的可燃性气体或蒸汽与空气形成的爆炸性气体混合物场所，适用于危险区域为1区或2区（详见GB3836.1-2000）。

   QB型防爆吊钩桥式起重机工作级别为中级。

Henan mine crane co., LTD. Product introduction: 

QB type explosion-proof hook bridge crane all motor, electric explosion-proof performance meet GB3836.2-2000 "explosive gas environment with explosion-proof electrical equipment in the second part: flameproof 'D', the whole machine conform to JB/T5897-2006 with the provisions of the standard for explosion-proof bridge crane, the explosion-proof products designated by the state inspection unit inspection, made a small explosion prevention certificate.Explosion-proof marks Exd2BT4 respectively, Exd2CT4. 

QB type explosion-proof hook bridge crane is suitable for factory smuggled critical ability is not higher than 2 b and 2 c, ignition temperature classes T1 ~ T4 group of combustible gas or vapor and air form for the sites with explosive air mixture, suitable for hazardous area for 1 or 2 area (see GB3836.1-2000). 

QB type explosion-proof hook bridge crane work level is intermediate.