Welcome to consult double girder explosion-proof bridge crane with capacity of 5t-50t, span of 7.5m-35m price and quotation with Henan Dowell Crane Co.,Ltd, which is one of the leading double girder explosion-proof bridge crane with capacity of 5t-50t, span of 7.5m-35m manufacturers and suppliers in China, and we can offer you customized products.Product Details   Key Specifications/Special Features: QB type explosion-proof overhead crane electrics and motor and all crane components all satisfy standards stipulated by GB3836.2-2000 explosion-proof electric equipment working in explosive gas environments part2: flame-proof type "D", and the performance of the crane satisfies demands in JB/T 5897-1991 explosion-proof crane.The crane has obtained explosion-proof certificate after passing examinations by units designated by the governments to test explosion-proof products, the explosion –proof marks are ExdII BT4 and ExdII CT4 respectivelyThis explosion-proof crane is suitable for areas where the explosionTransmission is not higher than IIB or IIC and the ignition temperature group of inflammable gas or explosive mixture of steam and gas is not lower than T4 applicable dangerous zones are zone 14 and zone2This product is generally controlled on the ground but control from the cabin is also allowable according to the special demand, the working grade is intermediateApplication:The product is applicable to the place in the factory where the capability of explosive is no higher than grade II B or II C, and where has mixture of detonating gas which is composed of flammable gas or steam, whose ignition temperature team belongs to T1-T4 team Product process:Factory overview: