Every trend examined in this series — the regional price gaps in hot rolled coil, the trade protectionism of Article 3, the carbon re-pricing of Article 4 — ultimately traces back to a single fact about the world steel market: there is too much steel, and most of it is in China. The numbers are almost too large to hold in one frame. China's theoretical steelmaking capacity is estimated at around 1,280 million tonnes, against an apparent domestic consumption that has fallen below 900 million tonnes, leaving an overcapacity gap on the order of 300 to 400 million tonnes. In 2025, facing stagnating domestic demand, Chinese mills redirected that surplus abroad in record volume, shipping 131 million tonnes of steel to foreign markets — about 14 percent of their annual crude steel production and a 153 percent surge from 2020.
That export machine is the most powerful and most destabilizing force in the global flat-rolled market. It is the reason prices are low at the open-market margin, the reason a record wave of anti-dumping cases has been filed against Chinese flat steel, and the reason the Western markets examined in earlier articles are protected by walls. This final article examines China's overcapacity in depth: how it was built, what the record export surge means, what Beijing is doing to manage it, and what it implies for hot and cold rolled coil markets through 2027 and beyond.
How the overcapacity was built
China's steel capacity is the product of a two-decade investment boom that was, in its own terms, entirely rational. From the early 2000s, as China industrialized at unprecedented speed, domestic steel demand grew explosively, fed by urbanization, infrastructure construction, and the build-out of manufacturing. Chinese producers responded with the largest steelmaking build in history, and for most of that period capacity and demand grew together. The structural problem arrived when the demand side stopped growing — as urbanization matured, the property boom peaked and infrastructure investment slowed — while the supply side, once built, did not shrink.
By the mid-2020s the mismatch was stark. The China Iron and Steel Association reported that first-quarter 2026 crude steel output fell to 248 million tonnes, down 4.6 percent year on year, with apparent consumption of 220 million tonnes, down 4.4 percent — a contraction that leaves supply exceeding demand as the sector's "main contradiction," in the association's own words. Against an estimated capacity of 1,280 million tonnes, Chinese production and domestic consumption now diverge by hundreds of millions of tonnes, and the Global Forum on Steel Excess Capacity estimated that China's contribution to global excess capacity reached 56.6 percent in the final quarter of 2025. No other country's overcapacity comes close; as the OECD notes, most of the world's excess capacity sits in China.
The character of the surplus matters as much as its size. A large share of Chinese capacity is in commodity flat-rolled products — hot rolled coil, cold rolled coil, sections and rebar — the standardized products that are easiest to sell abroad and hardest to differentiate. It is precisely these products, the backbone of global coil trade, that carry the surplus, and it is precisely these products that the world's anti-dumping machinery is now targeting. The surplus is not evenly distributed across the product range; it is concentrated in the most tradeable, most price-sensitive segments, which is why the coil market bears the brunt of it.
The record export surge
The exports are the visible face of the overcapacity. In 2025, Chinese steelmakers shipped a record 131 million tonnes of steel abroad, equivalent to roughly 14 percent of their annual crude steel production and a 153 percent surge from 2020. The direction of the surge is clear from the OECD's analysis: as domestic demand stagnated due to slowdowns in infrastructure spending and the property sector, Chinese producers redirected output to foreign markets to compensate for lost domestic sales. Exports are no longer a marginal outlet for Chinese steel; they are a structural safety valve, and their volume is now large enough to re-price the global market on their own.
The surge has not been uniform. Its composition has shifted toward higher-value and semi-finished products at various points, but the core of it remains flat-rolled and long products sold at the global-clearing price — the price at which a market with surplus supply clears, which is well below the Western domestic prices examined in Article 1. The gap between Chinese export offers, ranging roughly $440 to $620 per tonne for hot rolled coil depending on grade and destination, and the $1,200-plus US domestic price, is the arithmetic that drives the entire protectionist response. The world is not reacting to a theory of overcapacity; it is reacting to a visible flood of steel at prices its own producers cannot match.
Beijing's response: discipline, but not retreat
Faced with record exports, intensifying trade retaliation, and domestic pressure over industrial margins and emissions, Beijing has responded with a policy of managed restraint that stops well short of abandoning the export machine. The framework is the five-department work plan for 2025–2026, which explicitly targets "supply-demand adaptation": a ban on new capacity, higher capacity-replacement standards, and production cuts to control total output, with full-year crude steel output now expected to fall to around 930 million tonnes in 2026. The association's member mills have pursued a policy of self-discipline on production, and the first-quarter output decline of 4.6 percent shows the restraint is real, not rhetorical.
At the same time, Beijing has not moved to halt exports, and it is easy to see why. Exports absorb surplus that would otherwise depress domestic prices further, provide revenue for mills whose domestic margins are thin, and support employment in steelmaking regions. Chinese producers have also adjusted the composition and destination of their exports to manage retaliation — shifting toward higher-value products in some markets, toward emerging destinations in others, and qualifying for export-tax preferences and quality certifications where they help. The result is a policy that moderates the surplus and deflects trade friction without surrendering the export outlet — a delicate balancing act that leaves Chinese exports high but no longer rampaging.
The export management is not purely defensive. China has also pursued a range of measures to rationalize the industry from within: accelerating the exit of inefficient capacity, raising environmental and quality standards, promoting consolidation, and nudging the production mix toward higher-value and lower-emissions steel. The trajectory is toward fewer, larger, cleaner, more sophisticated mills — a transformation that would reduce the tonnage of commodity steel seeking a home even as it increases the competitiveness of what remains. It is a gradual process, however, and it will take years to materially close the surplus gap.
The global reaction and its consequences
The global reaction to China's export surge is the subject of Article 3, but its consequences for the coil market are worth restating here because they complete the picture. The record 131 million tonnes of 2025 drew a coordinated response: the US 50 percent Section 232 tariff, Europe's CBAM carbon border, and a wave of anti-dumping investigations across Asia and Latin America aimed specifically at Chinese flat steel. Mexico has hit Chinese hot rolled steel with provisional duties; India has opened investigations into Chinese hot rolled flat products; Indonesia, South Korea, Japan and others have imposed or proposed duties on Chinese coil and coated products.
The net effect is that Chinese flat steel now faces a thicker and thicker wall of barriers, yet exports continue because the surplus is so large and the open-market price so much lower than what Chinese mills could earn at home in the absence of exports. The displacement mechanics this creates — surplus pushed from one market to the next — is the defining dynamic of the global coil trade, and it is why the OECD's projection that global excess capacity will reach 745 million tonnes by 2028, exceeding the combined output of all OECD countries by roughly 319 million tonnes, is so consequential. The surplus is not being reduced by protection; it is being redirected, and China is the engine of that redirection.
What it means for hot and cold rolled coil
For hot rolled coil, the Chinese surplus is the anchor of the low end of the global price range. Chinese export offers set the clearing price for commodity HRC in the open markets of Asia, the Gulf, Africa and Latin America, and as long as the surplus persists, those prices will remain low relative to the protected Western markets. The consequence is a permanently bifurcated HRC market: a high-priced, tariff- and carbon-protected West, and a low-priced, surplus-fed open market, with only a thin seam of arbitrage between them.
For cold rolled coil, the Chinese surplus is equally consequential but manifests differently. Chinese cold rolled and coated coil, being higher-value, is both more attractive to Chinese mills as an export and more politically sensitive in destination markets, which is why it features so prominently in the anti-dumping wave — South Korea's action against zinc-coated cold rolled steel, Japan's provisional duties on flat and coated products, Mexico's investigation into cold rolled steel. The surplus is pushing Chinese producers up the value chain into cold rolled and coated products, which in turn is drawing protection down onto those very products. For non-Chinese CRC producers, the strategic implication is that competing with Chinese surplus on price is unwinnable; the durable advantages are grade sophistication, location inside protected markets, and low-carbon production — the same trinity that runs through this entire series.
The risks: downside to the discipline
The central risk to the global coil market is a breakdown of China's export discipline. The current arrangement — a high-volume but managed export flow, moderated by production curbs — sustains a fragile stability: Western producers enjoy protection, Chinese mills earn export revenue, and emerging markets absorb the surplus at low prices. That equilibrium could break in either direction. If Chinese mills, squeezed by thin margins and mounting trade barriers, push more tonnage onto the world market at clearing prices, the open-market price collapses and protection spreads further, dragging the entire global average down. If, conversely, Beijing tightens production curbs sharply, the surplus recedes, open-market prices firm, and the Western premium narrows — a scenario that would compress the margins of tariff-protected Western producers who have grown accustomed to them.
Both scenarios are live, and the market is currently pricing neither decisively. What the OECD and industry trackers agree on is that the surplus is structural and will not disappear quickly: capacity of 1,280 million tonnes does not shrink on the timetable of a five-year plan, and the transformation of Chinese steelmaking toward lower output, higher value and lower emissions is a decades-long project. For the foreseeable future, the 131-million-tonne export machine will continue to run, and the global coil market will continue to be defined by its shadow.
The domestic price signal and what it reveals
The clearest window into the Chinese surplus is the domestic price itself. Through most of 2026, Chinese hot rolled coil has traded in a range that, on an equivalent basis, sits several hundred dollars below Western prices, with domestic assessments hovering in the mid-to-high $400s per tonne. Chinese analysts project only a narrow upward shift in the 2026 price center, and the Shanghai Metals Market has cautioned that upside is limited by the same surplus that has defined the market since 2024, even as overseas geopolitical conflicts push up inflation expectations and commodity prices. The price signal is unambiguous: a market with too much supply and insufficient domestic demand, where the only relief valve is export.
The domestic price also reveals the limits of Chinese production restraint. First-quarter crude output fell 4.6 percent, and member mills practiced self-discipline, but the association's own framing — supply exceeding demand as the "main contradiction" — concedes that restraint is mitigating, not resolving, the imbalance. The cost of the restraint is borne disproportionately by the mills themselves, through thin margins, and by the state, through the industrial-policy apparatus that coordinates it. How long the industry can sustain this managed sacrifice is an open question, and it is one of the variables that could push the surplus back onto the world market in renewed force.
The composition shift: toward higher-value exports
Beneath the headline export volume, Chinese exporters are engaged in a quiet but significant shift up the value chain. Rather than shipping only commodity hot rolled coil, a growing share of Chinese exports is now in higher-value forms — cold rolled coil, galvanized and coated products, alloy and high-strength grades, and semi-finished products like slabs and billets. The shift is driven by two forces: the thin margins on commodity HRC, which push mills toward higher-value products, and the deliberate industrial-policy push to upgrade the product mix, export-tax preferences and quality certifications.
The consequences are double-edged. On one hand, higher-value exports earn Chinese mills better margins and partially offset the disadvantage of the surplus. On the other, they draw trade protection down onto precisely those products, as the anti-dumping actions against Chinese cold rolled and coated coil demonstrate. The upshift is thus both a survival strategy and a provocation: it improves Chinese competitiveness while extending the reach of the protectionist response, and it is one reason the global coil market's most contested products are now the higher-value ones examined throughout this series.
Destination diversification and the emerging-market safety valve
China's export destinations have also been reshaped by the protectionist response, and the pattern is a study in displacement. The US and EU, which once absorbed meaningful Chinese coil volumes, now take far less behind their tariff and carbon walls; the growth in Chinese exports has instead been absorbed by the markets that remain open — Southeast Asia, the Gulf, Africa, Latin America and, intermittently, India. These emerging markets have become the residual buyers of Chinese surplus, the pressure valve that keeps the system from seizing up.
The valve is, however, closing. As Article 3 detailed, India has opened an anti-dumping investigation into Chinese hot rolled flat products, Indonesia has imposed provisional duties, and Mexico has acted on both hot and cold rolled steel. Each new case closes another outlet and forces Chinese exporters to the next destination, an ever-shrinking circle of open markets. The emerging markets absorbing the surplus today are, in turn, developing their own mill ambitions, and the cheap Chinese steel that finances their industrialization is simultaneously undercutting the mills they are trying to build. This contradiction — surplus both aiding and undermining the developing world's steel industry — is one of the most intractable features of the market, and it shows no sign of resolving.
The path to structural reform
The longer-term question is whether China can reform the industry fast enough to absorb the surplus from within. The government's industrial policy points in a coherent direction: strict bans on new capacity, higher replacement standards that force older, less efficient plants to close when new ones are approved, accelerated exit of low-efficiency capacity, consolidation into fewer and larger producer groups, and a shift of the product mix toward high-value and low-emissions steel. Taken together, these measures would reduce the tonnage of commodity steel seeking a home and increase the competitiveness of what remains, gradually closing the gap between capacity and demand.
The obstacles are formidable. The industry is vast, geographically dispersed and politically embedded, with employment and local-revenue implications that make rapid consolidation painful. The shift from blast-furnace to electric-arc-furnace production — the most realistic route to lower emissions at Chinese scale — is constrained by scrap availability and coal-dependent power, though both are improving. And the very surplus that Beijing wants to reduce is also, in the short term, a source of export revenue and employment that the state is reluctant to surrender. The reform will proceed, but on a timetable measured in decades, not years, and the surplus will be a feature of the global market for the entire forecast horizon.
What it means for the rest of the world
For the world beyond China, the overcapacity presents a double-edged reality. On one hand, Chinese surplus is a source of cheap steel that has financed industrialization across the developing world, kept input costs low for import-dependent manufacturers, and disciplined the pricing power of Western mills. On the other, it has undermined the viability of steel industries everywhere — new mills in emerging markets struggle against the surplus, established mills in the West survive only behind tariff and carbon walls, and the global steel industry as a whole operates at chronic overcapacity and thin margins. The OECD's analysis is blunt: subsidies and surplus are increasingly undermining fair competition, and the international effort to address the steel crisis is intensifying precisely because the surplus shows no sign of abating.
The strategic implication for every participant in the coil market is to plan for a world in which Chinese surplus is a permanent feature. Buyers should treat low open-market prices as a feature of the system but price in the litigation risk attached to any Chinese-sourced coil. Producers should assume the surplus will not retreat and should compete on grade, carbon and location rather than price. And policymakers should recognize that protection, however necessary to domestic mills, is a displacement game that does not reduce the surplus — it merely decides who absorbs it.
Conclusion
China's overcapacity is the defining fact of the global steel market, and the 131-million-tonne export surge of 2025 is its most visible consequence. A capacity of roughly 1,280 million tonnes, a domestic demand that has fallen below 900 million, and an overcapacity gap of several hundred million tonnes together constitute a surplus so large that it re-prices the world's hot and cold rolled coil on its own, draws protection from every major market, and sustains a permanent bifurcation between protected West and open East. Beijing's response — managed restraint, production curbs, industry consolidation and a shift toward higher-value, cleaner steel — moderates the surplus without eliminating it, and the export machine continues to run. For the global coil market, the question is not whether the surplus will persist — it will — but how the world adjusts to a market that produces more steel than it needs, and whose largest producer is now the engine of both its cheap supply and its persistent instability. Until that surplus is absorbed, every price, every tariff and every carbon charge in the flat-rolled complex will be written in its shadow.