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 缆芯填充油膏 Filling compound PE内护套PE intermediate sheath 双面涂塑轧纹钢带粘结PE外护套 Corrugated steel wire ......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 缆芯填充油膏 Filling compound PE内护套PE intermediate sheath 双面涂塑轧纹钢带粘结PE外护套 Corrugated steel wire coated with PE/co-polymer on both sides bonded to the Inner surface of PE sheath