What are the UK CBAM default values for flanges and pipe fittings?
HMRC's UK CBAM default for steel flanges that are not cast or stainless (7307 91 00) is 3.602 tCO2e per tonne. Cast steel pipe fittings (7307 19 90) are 4.182, non-malleable cast iron fittings for pressure systems (7307 11 10) 3.785, and other cast iron fittings (7307 19 10) 3.571.
Defaults under heading 7307
- 7307 91 00: flanges, not cast or stainless: 3.602 tCO2e per tonne.
- 7307 19 90: cast steel tube or pipe fittings: 4.182.
- 7307 11 10: non-malleable cast iron fittings for pressure systems: 3.785.
- 7307 11 90: other non-malleable cast iron fittings: 3.649.
- 7307 19 10: other cast iron fittings: 3.571.
Cast fittings are in, other castings are not
Cast pipe fittings under 7307 are UK CBAM goods. Cast articles under heading 7325 are not on the UK list. Classification decides it, not the casting process.
What Senseible does here
Senseible reads bar, billet and casting inputs with furnace fuel invoices, so your fitting figure can be set against 3.602 or 4.182. We build the figure from your records and check every figure in-house; for the UK it must then be verified by a verifier accredited for UK CBAM. Have your own verifier? Send it to them.
Sources: HMRC, UK CBAM iron and steel default values (published 16 October 2026), HMRC, Goods within the iron and steel sector in scope of UK CBAM
Last reviewed 2026-11-02.