气制动螺旋管及七芯电缆螺旋线

1升马气制动螺旋管采用12x1.5单层尼龙管或复合尼龙管为管体。七芯电缆螺旋线以单层尼龙管为护管。尼龙坚韧本性以及螺旋形设计的可伸缩性，使管子损坏程度的可能性降到了最小程度，使其使用寿命远远大于其他联接方式。主要适用于主机与挂车之间的气制动管路及电路的连接。

S hermir air brake helix hose could be single layer with size 12x1.5 or multi-layer. Seven-core helix cableadopts single layer PA tube as protection. Nylon toughness and retractile spiral design reduce the possibility oftube damage, so its lifespan is much longer than that of other connect method, It can be applied to brake systemand eleetrocireuit conneetion oftruck and trailer.