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.
