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        1. 10
          2019
          09

          860口徑隧道逃生管道的技術參數和要求

          860口徑目前正舉新材料現貨充足,可隨時發貨。860管道參數:每根長3米,鏈接為鏈條鏈接和抱箍鏈接,每米重79公斤橘黃色厚度:30個厚以上 ① 超高分子量聚乙烯逃生管道所用管材采用φ860mm的超高分子量聚乙烯管道,管節長度為3m,壁厚30mm以上,管節間可采用直徑大于逃生管道直徑的套管連 接,每端連接1m,采用橡膠圈或木楔臨時固定。為保證管道承受坍塌體的壓力,對采用的材質管材,必須確保其承壓能力和連接頭的牢固,并經試驗室具體試驗 后,方可用于隧道中。   &nbs
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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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