Lift the protective doors refuge chamber refuge chamber blast doors, you will think that it is explosion-proof doors, not really, each refuge chamber protective closed doors by the two doors open outwards constitution. For the protection of the outside of the first explosion-proof doors, referred to the outer door, the main function is to resist the shock wave and the barrier 1.5Mpa toxic gases; the second track is protective closed doors, referred to as the inner door, the main function is to resist and block the toxic shock wave 0.3Mpa harmful gases. Between the two doors of the transition chamber, a sealed door of the safe-haven survival room. Big refuge chamber blast doors, closed doors strong settled the country's major coal mines, welcome your purchase, into us, that you do not regret the choice. Refuge chamber refuge chamber isolation doors closed door 0.8 * 1.6 refuge chamber refuge chamber door interior doors exterior doors refuge chamber refuge chamber explosion-proof door is mainly used for coal mine refuge chamber between the chamber and the living room transition, open outwards, play a waterproof, fireproof, anti-shock effect. The protective clockwise to open closed doors, the wall thickness of the two frames are 500mm, spacings of two frame walls must not be less than 3.0 meters. Such a good quality, such a low price, how your heart miss ruthless? Main Specifications: No. Model width X height under pressure (Mpa) 1 BMB-800X1300-12 800X1300 0.3 2 BMB-800X1400-12 800X1400 0.3 3 BMB-800X1500-14 800X1500 0.5 4 BMB-800X1600-14 800X1600 0.5 5 BMB-800X1700 -14 800X1700 0.5 6 BMB-800X1800-14 800X1800 0.5 (according to user requirements specifications can be customized) Shandong's coal mine machine Inclined shaft blast doors to our direct marketing products, quality and cheap, is your good choice for your benefit St. Mine Machine maximizing choice! Holy Mountain Machinery Co., Ltd. Shandong coal mine annual production of waterproof airtight doors, fire gates, anti-shock doors Inclined wells blast doors, blast doors refuge chamber, anti-sudden throttle, throttle and other non-pressure mine gate, buffer Bed and buffer strips, concrete sleepers, corrosion sleepers, various mine support equipment with Shandong's coal waiting for your advice, Shandong's coal Xiao Han 24 hours waiting for your Union