| 73 | | | HS Code for Articles of iron, iron or steel |
| | 73041120 | Stainless 114.3mm < outer diameter of <215.9mm of |
| | 73041130 | Stainless steel pipe outer diameter of tube <=114.3mm |
| | 73041190 | Other stainless steel line pipe |
| | 73041910 | 215.9mm<= outer diameter of the other tube <=406.4mm |
| | 73041920 | Other 114.3mm< outer diameter of |
| | 73041930 | The outer diameter of the other duct pipe <=114.3mm |
| | 73041990 | Other pipeline pipe |
| | 73042210 | Stainless steel outer diameter of the drill pipe <=168.3mm |
| | 73042290 | Other stainless steel drill pipe |
| | 73042310 | Other <=168.3mm outer diameter of the drill pipe |
| | 73042390 | Other drill pipe |
| | 73042400 | Other stainless steel with oil and gas drilling |
| | 73042910 | Yield strength of <552 mpa other drilling stone |
| | 73042920 | <= 552 mpa yield strength of <758 mpa which |
| | 73042930 | Other rock drilling yield strength >=758 mpa |
| | 73043110 | Cold rolling a steel seamless boiler tubes |
| | 73043120 | Geological rolled seamless steel drill pipe, casing |
| | 73043190 | Other cold-rolled steel seamless circular cross-section of the tube |
| | 73043910 | Non-drawn or cold-rolled steel seamless boiler tubes |
| | 73043920 | Non-seamless rolled iron geological drill pipe, casing |
| | 73043990 | Other non-cold-rolled steel seamless pipe |
| | 73044110 | Cold-rolled stainless steel seamless boiler tubes (drawing |
| | 73044190 | Other cold-rolled stainless steel seamless pipe |
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