Unverified85% confidenceDecision RuleTime unknown
硬管vs软管：直线段和主干道用硬管（可换线、抗压好）；转角处用弯管弹簧冷弯硬管而非直角接头；只有到灯位、开关盒等末端小段才用波纹软管，全程软管后期无法更换电线
1
Sources
85%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified硬管抗压耐踩但转弯需用弯管弹簧或成品弯头、施工慢；波纹软管施工快转弯自由但抗压差、内壁褶皱增大抽线阻力，长距离多弯线路用软管后期换线极难79% similarUnverifiedPVC硬管成本低、抗压好但拐弯需弯管弹簧或配件；波纹软管敷设灵活可绕障碍但抗压差，暗埋大量硬管、局部拐角复杂处用波纹管过渡78% similarUnverified变速外管为无缝一体切口，裁切后必须确保内衬管（liner）未被挤扁，否则内线穿过时会卡滞；用锥形工具或尖头重新扩圆内衬孔是标准操作，不可直接强行穿线78% similarUnverified上管包固定通常需要上管+头管两点绑带，头管处绑带过长会导致转向时刮蹭线管，安装时应确认前绑带避开变速/刹车线走线位置77% similarUnverified内走线机械升降座管的线管布局需车架预留内走线孔，老款外走线车架不建议改装内走线升降座管，改装会破坏车架或线管外露磨损76% similar
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