… example, bridges and bridge-sections, lock-gates, towers, lattice masts, roofs, roofing frame-works, doors and windows …
Explanatory notes
… example, bridges and bridge‑sections, lock‑gates, towers, lattice masts, roofs, roofing frame‑works, doors and windows … heading 73.14. Parts of structures include clamps and other devices specially designed for assembling metal structural … devices usually have protuberances with tapped holes in which screws are inserted, at the time of assembly, to fix …