China's steel sector swung to a loss in September — and the NBS numbers show why output cuts have not been enough

The number that matters is not the cumulative one

China's National Bureau of Statistics (NBS) reported on 27 October that the ferrous metal smelting and rolling sector — iron and steelmaking plus rolling — earned total profit (利润总额) of RMB 24.34bn in January–September 2026, down 73.3% year on year. SteelOrbis and other outlets reported the figure as "gross profit"; it is not. The NBS indicator is pretax profit, net of selling, administrative, R&D and finance expenses. The distinction is not pedantic here, because it explains where September's loss came from.

The cumulative decline is bad. The monthly trajectory is worse: NBS reported –51.2% for January–July, –62.4% for January–August and –73.3% for January–September. Extrapolating the monthly run-rate, the sector earned roughly RMB 3.7bn a month on average through August and then lost about RMB 5.09bn in September alone — the month the industry had counted on for its traditional autumn peak.

That September figure is my derivation, not an NBS publication. NBS releases cumulative year-to-date levels only; subtracting the January–August level (RMB 29.43bn) from the January–September level gives –RMB 5.09bn. NBS also revises its "above-designated-size" enterprise universe annually and warns that period levels are not directly comparable year on year, so single-month differences are indicative rather than official.

Where the September loss actually came from

The more instructive calculation uses the revenue and cost lines NBS publishes alongside profit:

Source: NBS releases of 28 September and 27 October 2026; September column is my calculation.

The sector's September revenue still exceeded its operating costs by about RMB 2.3bn. It still lost RMB 5.1bn. In other words, the monthly loss was not driven by a collapse in the mill-level spread between steel prices and raw-material cost in the month; it was driven by the fixed and semi-fixed cost base — depreciation, finance costs, administration, selling — sitting on top of a thin, and now negative, operating margin. That is the signature of an industry running at high utilisation with insufficient pricing power, rather than one in a raw-material cost shock.

The cumulative arithmetic supports the same reading. Year-to-date revenue of RMB 555.46bn less operating costs of RMB 530.18bn leaves RMB 25.28bn, almost exactly the RMB 24.34bn of reported pretax profit. The entire expense block — selling, administration, R&D, finance — was effectively covered by other income. Remove that buffer and the sector is at breakeven before its cost of capital.

The comparison that should worry policymakers

Seen against the rest of Chinese industry, the ferrous sector's underperformance is extreme. NBS reported nationwide industrial profits of RMB 6,033.74bn for January–September, up 15.5% year on year. Ferrous smelting and rolling contributed 0.40% of that total on 5.2% of nationwide industrial revenue — a profit share roughly one-thirteenth of its revenue share.

The divergence within metals is starker still. Non-ferrous smelting and rolling earned RMB 442.55bn, up 79.7% year on year, on revenue up 17.5% — about eighteen times the ferrous sector's profit on roughly 1.5 times the revenue. Aluminium and copper prices have done for non-ferrous what weak steel demand and surplus capacity have done to ferrous.

Other links in the chain show the same split between upstream, midstream and downstream:

Source: NBS, January–September 2026 industrial profits by industry.

Three readings stand out. First, iron ore mining profits fell only 3.6% while steelmaking profits fell 73.3%: the upstream cost base has not adjusted to the steel price, which is the classic squeeze. Second, metal products manufacturing grew revenue 4.3% while losing 9.6% of profit — fabricators are absorbing some of the pain and are themselves under margin pressure. Third, automobiles show the same pattern at larger scale: revenue up 2.6%, profit down 22.8%. Weak steel demand is partly a story about the industry's biggest customers earning less and therefore paying less.

Volumes are still falling — but not fast enough

The September industrial output release (19 October) showed crude steel output of 73.59 Mt, essentially flat year on year (+0.1%), with January–September output at 724.77 Mt, down 2.9%. Finished steel was 118.17 Mt in September, down 3.8%, and pig iron 65.34 Mt, down 1.4%. Ferrous smelting and rolling value added still grew 1.6% in September, implying a shift towards higher-value product mix rather than tonnage.

The production response has been real but late and partial. CISA-member mills cut average daily crude steel output from 1.922 Mt/day in mid-September to 1.881 Mt/day in late September, with finished steel inventories down 8.4% to 15.65 Mt. Industry reporting has put the share of profitable mills at under 10% by mid-September. The industry association has publicly urged members to rein in output and destock.

The implication of the September profit arithmetic is that deeper cuts alone may not restore profitability quickly. If the sector is losing money while its revenue still covers operating costs, every tonne still makes a positive contribution to fixed costs — which is precisely why mills resist cutting. That is the coordination problem at the heart of China's steel surplus. The adjustment will have to come either from a sustained rise in steel prices or from a structural reduction in capacity and the associated fixed-cost base; marginal output trims will not do it.

What to watch

The September loss is a single month and the sector remains profitable year-to-date, so this is not yet a sector-wide solvency event. But three things make it consequential. First, the pace of deterioration within 2026 (–51%, –62%, –73%) suggests Q4 will be worse, because the seasonal demand tailwind has passed. Second, the loss emerged in the peak season, which removes the usual argument that weakness is temporary. Third, the gap with non-ferrous metals will sharpen the political question of why one metals sector is earning record profits while the other is lossmaking, and it will feed into the debate over capacity replacement, export discipline and the property sector's drag.

The next real test is the October and November data. A second consecutive monthly loss would confirm the sector has crossed from cyclical weakness into a structural margin problem.