… whether or not drilled, punched or made from assembled elements; welded angles, shapes and sections, of iron or …
Explanatory notes
… whether or not drilled, punched or made from assembled elements; welded angles, shapes and sections, of iron or … These sections can be fitted to each other by being simply interlocked or even by having their longitudinal sides … sides at least, connecting devices (e.g. grooves, flanges, interlocks). This heading includes : (1) Sheet piling …