Other tubes and pipes, welded, of iron or steel -- typically large-diameter line pipe (oil & gas, water main, structural).

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CN 7305

Name: CN 7305 -- Tubes and pipes, having circular cross-sections and an external diameter of > 40
Brand: AutoCBAM
SKU: 7305

Tubes and pipes, having circular cross-sections and an external diameter of > 406,4 mm, of flat-rolled products of iron or steel "e.g., welded, riveted or similarly closed"

✓ In scope of CBAM Iron and steel

CBAM cost preview

Live ETS price: €78.73/t CO₂. Sample: 1 tonne of CN 7305 at default factors costs ~€22.52 in CBAM certificates today.

Direct emissions: 2.585 t CO₂/t
Indirect emissions: 0.275 t CO₂/t
CBAM cost (1000 t shipment): €22,517

How is this calculated?

CBAM certificate cost = embedded emissions × ETS price × (1 − free-allocation factor) × phase-in markup.

Phase-in 2026: 10% of full certificate cost. Free allocation assumed 0% in this preview.

Calculate my CBAM cost →

Default embedded emissions

When you cannot collect verified supplier data, the EU lets you use these default values for the Iron and steel sector.

Origin	Direct emissions	Indirect emissions	Total
China	2.585	—	2.585
Indonesia	8.25	—	8.25
Kazakhstan	5.36	—	5.36
India	4.32	—	4.32
South Africa	4.22	—	4.22

t CO₂e per tonne of product. Source: EU Implementing Reg. 2025/2621 Annex IV.

Top exporters into the EU

Eurostat Comext, latest available year. Volumes shown are extra-EU imports (tonnes).

Origin	Tonnes / yr	Share
China	220,000	100%

Source: Eurostat Comext annual extra-EU trade.

How to comply for this code

Reviewed by AutoCBAM team — last updated 2026-04-28.

Methodology guide -- CN 7305 (welded steel tube, large diameter)

Large-diameter welded line pipe is used in oil & gas pipelines and structural applications. Welded production is less emissions-intensive than seamless (CN 7304) but still carries the upstream steel emissions.

Step 1 -- understand the upstream chain. Welded pipe takes hot-rolled coil or plate, forms it into tube, and welds the seam. The upstream coil/plate emissions dominate; the welding adds <0.1 t/t.

Step 2 -- request verified data for the full chain. Pipe makers should pass through the coil/plate supplier emissions. A pipe-mill-only emissions report is insufficient.

Frequently asked questions

What is CN 7305?: Other tubes and pipes, welded, of iron or steel -- typically large-diameter line pipe (oil & gas, water main, structural).

Get an emissions cost report for this product

Free PDF with sector defaults, top-3 origin countries and an ETS-linked cost forecast for CN 7305.

Reference data only — confirmed CBAM scope ultimately depends on TARIC declaration and the latest amendments to CBAM Annex I.