内蒙古立井防爆门产品参数MFBL立风井防爆门型号意义MFBL——立风井防爆门；5.0——井口直径5000mm；可根据矿方要求定做350——风机负压不大于350mm水柱。一般尺寸有：MFBL-3.0/450B78-375.1MFBL-3.5/450B78-375.2MFBL-4.0/450B78-375.3MFBL-4.5/450B78-375.4MFBL-5.0/450B78-375.5MFBL-5.5/450B78-375.6MFBL-6.0/450B78-375.7MFBL-6.5/450B78-375.8MFBL-7.0/450B78-375.9MFBL-3.0/350B78-375.10MFBL-3.5/350B78-375.11MFBL-4.0/350B78-375.12HK15)