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        1. 25
          2019
          09

          正舉隧道逃生管道的規格和參數詳細

          隧道逃生管道每節長度3米,每米約重69kg而(鋼管每米重量210公斤)經過測量和專業人體測量學的專家的理論確定逃生管在隧道中的使用是非常符合人體學的。材質由超高分子量聚乙烯材質加工制成,超高分子隧道逃生管道具有重量輕、拆裝和搬運方便、管道韌性好、抗沖擊強度高,管道環剛度高、耐壓性好、不易變形等性能,能長時間使用。   逃生管規格   1.保證隧道逃生管厚度不小于30mm   2.每節隧道逃生管長度3米&nb
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          嫩草在线_日韩专区在线观看_制服丝袜在线_午夜不卡伦在线观看
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