Heat shrink and insulation components for metro, mainline rail and track infrastructure.
Rail transit projects — metro lines, mainline railways and their track infrastructure — combine medium-voltage power distribution, compact electrical rooms and harsh outdoor or tunnel environments in one system. Components must install quickly, often within short night possession windows, and stay in service for decades without maintenance.
Metro power supply systems rely on 10-35 kV ring network cables feeding substations and station equipment. We supply heat shrink and cold shrink termination and joint kits for these XLPE cables, type tested to GB/T 12706, together with busbar insulation tubing that lets switchgear and panel manufacturers reduce phase-to-phase clearances in crowded station electrical rooms.
For track infrastructure, our TLG high-strength heat shrink tubing insulates the steel framework of slab track in high-speed rail, urban rail and metro construction. On rolling stock and vehicle wiring, oil-resistant and dual wall tubing protects harnesses against abrasion and fluid exposure.
| Challenge | ZZ Solution |
|---|---|
| Track slab insulation ages under long-term mechanical load | TLG semi-rigid tubing, high tensile strength (22 MPa grade) and high elongation |
| Metro electrical rooms leave no space for air clearances | MPG busbar tubing reduces phase-to-phase distance in compact switchgear |
| Tunnels stay wet and condensing year-round | Dual wall tubing with adhesive lining seals splices against moisture |
| Night possession windows are short and hot work is restricted | Cold shrink joints and terminations install with no heat source |
| Vehicle harnesses rub and age in oil-laden environments | Oil-resistant tubing of the YRS type protects harnesses and fluid lines |
| Fire and smoke rules in enclosed stations and tunnels | Halogen-free, flame-retardant tubing options for enclosed spaces |
Tell us your cable size, voltage and environment. We reply within one business day.
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