| Chapter Code | Chapter Description |
|---|
| 73082011 | TOWERS, WHETHER OR NOT ASSEMBLED : FOR TRANSMISSION LINE |
| 73079910 | OTHER : GALVANISED |
| 73079310 | BUTT WELDING FITTINGS : GALVANISED |
| 73079210 | THREADED ELBOWS, BENDS AND SLEEVES : GALVANISED |
| 73089010 | OTHER : BEAMS, CHANNELS, PILLARS AND GIRDERS PREPARED FOR USE IN STRUCTURES |
| 73082020 | TOWERS, WHETHER OR NOT ASSEMBLED : LATTICE MASTS |
| 73079190 | FLANGES : OTHER |
| 73072900 | OTHER, OF STAINLESS STEEL : OTHER |