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**Model:** QB Explosion-proof Bridge Crane **Lifting Capacity:** 5~75 ton **Span Length:** 10.5~31.5 meter **Working Grade:** A4 **Ambient Temperature:** -20℃~40℃ The Weihua QB type explosion-proof bridge crane is a double-girder explosion-proof bridge crane, mainly suitable for hazardous locations with flammable and explosive gas environments. The entire machine adopts explosion-proof motors, explosion-proof electrical appliances, and flameproof control systems, conforming to national explosion-proof standards, and is widely used in industries such as petroleum, chemical, natural gas, pharmaceutical, and military.         