产品概述 结构特征 Characteristic of Construction 松套管Loose tube 金属中心强件Metal central strength member 干式阻水材料 Moisture barrier 双面涂塑轧纹铝带粘结PE外护套 Corrugated aluminum tape coated with PE/co-polymer on ......产品概述 结构特征 Characteristic of Construction 松套管Loose tube 金属中心强件Metal central strength member 干式阻水材料 Moisture barrier 双面涂塑轧纹铝带粘结PE外护套 Corrugated aluminum tape coated with PE/co-polymer on both sides bonded to the inner surface of PE sheath