| Chapter Code | Chapter Description |
|---|
| 73061100 | LINE PIPE OF A KIND USED FOR OIL OR GAS PIPELINES : WELDED, OF STAINLESS STEEL |
| 73064000 | OTHER, WELDED, OF CIRCULAR CROSS- SECTION, OF IRON OR NON-ALLOY STEEL : OTHER, WELDED, OF CIRCULAR CROSS-SECTION, OF STAINLESS STEEL |
| 73063090 | OTHER, WELDED, OF CIRCULAR CROSS- SECTION, OF IRON OR NON-ALLOY STEEL : OTHER |
| 73066100 | OTHER, WELDED, OF NON-CIRCULAR CROSS SECTION : OF SQUARE OR RECTANGULAR- CROSS- SECTION |
| 73071120 | OF NON-MALLEABLE CAST IRON : SG IRON CAST FITTINGS |
| 73071110 | OF NON-MALLEABLE CAST IRON : SPONGE IRON CAST FITTINGS |
| 73066900 | OTHER, WELDED, OF NON-CIRCULAR CROSS SECTION : OF OTHER NON-CIRCULAR CROSS- SECTION |
| 73063010 | OTHER, WELDED, OF CIRCULAR CROSS- SECTION, OF IRON OR NON-ALLOY STEEL : OF IRON |