Market evolution: Cast iron pipes (CN 7303) — 2015–2025

Introduction

This report examines the EU's external trade in Tubes, pipes and hollow profiles, of cast iron (CN 7303) over the period 2015–2025. The product category covers a mature, infrastructure-oriented segment of the iron and steel industry, used extensively in water and sewage networks, drainage systems, and certain industrial applications.

Over the decade, the EU's trade in cast iron pipes underwent a quiet but substantial transformation. While headline trade values rose by roughly 50 % on both the import and export sides, physical volumes barely moved—indicating that price inflation, not demand growth, drove the value gains. At the same time, the geography of trade shifted markedly: long-standing suppliers like Russia and Switzerland lost ground, while Türkiye and China surged. Domestically, EU production collapsed by more than two-thirds in volume, pushing the bloc's trade intensity and export propensity sharply higher and raising questions about the long-term resilience of European manufacturing capacity in this sector.

The report is organised around three central dynamics: the price-driven nature of value growth, the restructuring of trade partnerships, and the interplay between declining production and rising trade exposure.

1. Price Inflation Drives Value Growth While Physical Volumes Remain Flat

The most striking feature of EU trade in CN 7303 over 2015–2025 is the widening gap between nominal trade values and actual quantities traded. Both imports and exports grew substantially in euro terms, yet the tonnages involved changed little—pointing to a decade dominated by unit-price appreciation rather than expanding demand.

Export values rose nearly 50 % even as volumes edged lower

EU exports to non-EU countries grew from €91.8 million to €137.3 million over the period, a gain of 49.5 %. Yet export volumes actually fell by 5.5 %, from 68,111 tonnes to 64,350 tonnes. The explanation lies in the surge in unit export prices, which climbed from €1,348/t to €2,133/t—a 58.3 % increase. Export volumes peaked at 111,482 tonnes at some point during the period before retreating, suggesting that any volume gains were temporary and ultimately reversed.

Import trends mirror the export pattern

EU imports followed a strikingly similar trajectory. Import values rose 46.7 % (from €88.8 million to €130.3 million), while volumes were virtually unchanged at around 130,000 tonnes. Import prices climbed from €678/t to €1,001/t, a 47.7 % increase. Notably, import volumes reached a maximum of 149,681 tonnes during the period, indicating some cyclical fluctuation.

A persistent export-price premium signals product differentiation

Throughout the period, EU export unit values were roughly double those of imports (€2,133/t vs. €1,001/t in 2025). This persistent and substantial price gap suggests that the EU tends to export higher-specification or finished cast iron pipe products while importing more standardised, lower-value goods—a pattern consistent with the bloc's position as a producer of specialised infrastructure components.

The trade balance remains positive but narrow in absolute terms

The EU maintained a small positive trade balance throughout the period, rising from €3.0 million to €6.9 million (+132.5 %). The balance peaked at €63.9 million at one point during the decade, implying significant year-to-year swings. Despite the positive balance, its modest size relative to total trade turnover (over €260 million combined in 2025) indicates that the EU's cast iron pipe sector is only marginally net-positive in trade terms.

2. A Dramatic Reshuffling of Trade Partners

Beyond the price story, the decade saw a profound restructuring of the EU's trade geography. Several long-established partners lost market share, while new or previously marginal suppliers—most notably Türkiye—emerged as major players. On the export side, demand shifted toward neighbouring European economies and select overseas markets.

India remains the EU's top import source, but Türkiye's rise has been meteoric

India was the largest supplier of cast iron pipes to the EU in both 2015 and 2025, growing modestly from €53.1 million to €58.3 million (+9.8 %). However, the most dramatic shift came from Türkiye, which surged from a mere €0.9 million to €30.1 million—an extraordinary increase of over 3,400 %. China also grew strongly (+63.2 %), rising from €13.8 million to €22.5 million.

Russia's collapse and the retreat of traditional European suppliers

The Russian Federation's share of EU imports plunged by 80.4 %, falling from €2.2 million to just €0.4 million. This decline, which accelerated after 2022, is almost certainly linked to the sanctions regime imposed following Russia's invasion of Ukraine. Switzerland and the United Kingdom—both geographically proximate and historically reliable suppliers—also saw their exports to the EU diminish, by 40.9 % and 18.6 % respectively.

EU exports concentrate on neighbouring markets, with the UK emerging as a fast-growing destination

On the export side, Switzerland remained the EU's largest customer, growing from €21.2 million to €36.8 million (+73.5 %). Norway was the second-largest partner, broadly stable at around €15.6 million. The most notable growth came from the United Kingdom, which surged from €9.9 million to €26.2 million (+164.8 %)—a development that may partly reflect post-Brexit trade reorientation and the UK's continued need for European-manufactured infrastructure products. Morocco (+203.4 %) and the United States (+143.9 %) also recorded strong growth, while Iraq's exports to the EU collapsed by 93 %.

Import concentration has declined, while export markets have become slightly more focused

The Herfindahl-Hirschman Index (HHI) for import value fell from 4,001 to 2,903 (−27.5 %). While still above the 2,500 threshold typically considered "highly concentrated," the decline signals meaningful diversification of the EU's supply base—driven in large part by the rise of Türkiye and the decline of Russia. By contrast, the export HHI edged up from 1,119 to 1,362 (+21.7 %), reflecting growing reliance on a handful of key buyers, particularly Switzerland, the UK, and Norway.

Some EU member states have seen sharp import reorientation

Among EU member states, Romania's imports surged by 925.5 % (from €0.3 million to €2.9 million), likely reflecting major infrastructure investment funded by EU cohesion programmes. Italy nearly doubled its imports (+94.2 %), while Spain's imports fell by 35.5 %. On the export side, France and Germany remained the dominant EU exporters, though Germany's share declined by 20.3 % and France's was broadly flat.

3. Contracting Domestic Production and Rising Trade Exposure

Perhaps the most consequential structural shift over the decade was the sharp contraction of EU domestic production, even as the bloc's trade intensity and export propensity climbed to unprecedented levels. This combination suggests a European cast iron pipe sector that is becoming smaller in absolute terms but more globally integrated—a pattern with important implications for industrial resilience.

EU production volume has fallen by more than two-thirds

Production volumes plummeted from approximately 1,409 million kg (~1.4 million tonnes) in 2015 to just 447 million kg (~447 thousand tonnes) in 2025—a staggering decline of 68.3 %. Production value also fell, but less steeply (−35.4 %, from €1,175 million to €760 million), indicating that the price of domestically produced pipes rose even as output contracted. The minimum production point was 360 million kg, suggesting a trough that was even more severe than the 2025 endpoint.

This dramatic contraction likely reflects a combination of factors: deindustrialisation trends in parts of Europe, competition from lower-cost Asian producers (notably India and China), the phase-out of older foundry capacity, and tightening environmental regulations that have raised the cost of domestic casting operations.

Trade intensity and export propensity have surged

As domestic production shrank, the EU's trade intensity (the share of trade in total apparent consumption) more than doubled, rising from 12.0 % to 32.1 % (+167.2 %). Export propensity (exports as a share of production) tripled, climbing from 6.5 % to 20.3 % (+212.4 %). These are large structural shifts. They indicate that the remaining EU production base is far more export-oriented than it was a decade ago—or, put differently, that the EU's domestic market is increasingly served by imports while European producers seek outlets abroad.

The net import reliance remained negative throughout most of the period (meaning the EU was a net exporter), ending at −3.0 % in 2025. However, it dipped as low as +2.0 % at one point, meaning the EU briefly became a net importer—an unusual event for a sector in which Europe has traditionally been self-sufficient.

Specialisation is concentrated in a handful of member states

Revealed comparative advantage (RCA) analysis for 2025 shows that France is by far the most specialised EU producer, with an RCA of 5.89 and a normalised RSCA of 0.71. France alone accounts for 46.0 % of EU production value but only 7.8 % of total EU trade—indicating a strong domestic orientation. Croatia (RCA 3.65), Austria (RCA 3.37), and Spain (RCA 3.00) also display meaningful specialisation. Germany, despite being the EU's largest economy and a major exporter in absolute terms, has a below-average RCA of 0.60 and a negative RSCA (−0.25), suggesting it does not hold a comparative advantage in this product relative to its overall trade profile.

At the other end, Finland, Lithuania, Denmark, Latvia, and Ireland show virtually no specialisation (RCA near zero), indicating negligible domestic production of cast iron pipes.

Price volatility has varied sharply across partners

Volatility analysis reveals that some of the EU's newer or smaller trade relationships are far more unstable than its established ones. Belarus (CV 2.20), Türkiye (CV 1.05), and Iran (CV 1.04) show the highest import-side volatility, while Switzerland (CV 0.18) and Norway (CV 0.22) are the most stable export destinations. Notable price shocks were detected in EU exports to the United States in 2023 (price abnormality score of 176.2, a 63.6 % shift) and to Angola in 2021 (+167.1 %), suggesting episodes of supply disruption or opportunistic pricing in smaller markets.

Conclusion

The EU's trade in cast iron pipes (CN 7303) over 2015–2025 tells a story of structural change beneath a veneer of nominal stability. Trade values grew by roughly 50 % on both the import and export sides, but this was almost entirely a price phenomenon: physical volumes were essentially flat, and EU domestic production collapsed by more than two-thirds in tonnage.

The partner landscape has been redrawn. Türkiye's emergence as a major supplier (from near-zero to over €30 million in imports) is the single most dramatic shift, while the effective disappearance of Russian imports reflects the geopolitical realignment of 2022. On the export side, the United Kingdom has become an increasingly important customer, and the EU's export base has become somewhat more concentrated in its nearest neighbours.

The long-term implications of declining domestic production combined with rising trade intensity deserve close attention. The EU's cast iron pipe sector is becoming smaller, more trade-dependent, and more exposed to external competition and supply disruption. While the bloc has so far maintained a slight trade surplus, the margin is narrow and the production base on which it rests has eroded significantly. Policymakers concerned with infrastructure resilience and industrial sovereignty may wish to monitor these trends carefully.