… Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel. …
Explanatory notes
… 73.07 ‑ Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel. … integral part of the bore (e.g., hangers, stays and similar supports which merely fix or support the tubes and pipes on …