… Railway or tramway track construction material of iron or steel, the following : …
Explanatory notes
… ‑ Railway or tramway track construction material of iron or steel, the following : rails, check‑rails and rack rails, … at crossings and curves. Rack rails are intended for steep gradient railways. One type consists of two long … with the cogged wheel. All the above rails may be straight, curved or drilled with bolt holes. (2) Switch …