China's PCI Coal Market Softens Into Late October as Mill Margins Squeeze Injection Demand

The 28 October Mysteel prints are unremarkable on their own: the domestic PCI spot index (MDPI) fell 8.5 yuan to 1515.7 yuan/t, and Russian Low Vol PCI dropped $5 to $183.75/t CFR China. What matters is what these numbers reveal about the state of China's blast-furnace fuel mix going into the winter heating season — and why the softness is concentrated in procurement behaviour rather than in mine supply.

The signal is in the sequence, not the daily print

A single down-day tells you little. The trend does. Mysteel's seaborne PCI index (MFPI) for Russian Low Vol has now fallen for several consecutive assessments: $195/t on 23 October (flat), $190/t on 26 October (−$5), $183.75/t on 28 October (−$5), and a further easing to roughly $182.50/t on 29 October. That is a decline of more than $12/t in under a week — a meaningful move for a product whose monthly average in October was already trending lower.

The domestic picture is more nuanced. The MDPI composite sits at 1515.7 yuan/t against an October monthly average of 1545.8 yuan/t, implying the index has drifted roughly 30 yuan below its month-to-date mean. Regional mill-gate quotations were described as broadly stable to soft:

Port prices moved more decisively than pithead prices: Rizhao port PCI fell 50 yuan to 1,600 yuan/t FOB-port, Hebei port to 1,470 yuan/t ex-works pickup, and Fangchenggang to 1,550 yuan/t. Hebei sinter coal (Q6100) eased to 1,410 yuan/t and Q6400 to 1,500 yuan/t — also down 50 yuan on the prior assessment.

Why this is a demand story

The direction of travel is fully explained by Mysteel's own commentary, which flags three interlinked pressures: weak steel mill profitability, slow post-holiday restocking, and elevated auction failure rates (流拍率) as mills reject high offers. This is not a supply glut — southwest PCI supply is explicitly described as tight, and several producing regions report restricted raw-coal output from mining constraints. Prices are falling because buyers are pricing off their own margins.

That logic is confirmed by the broader steel data. The 247-mill profitability ratio recovered to about 11.3% in the week to 23 October, but that recovery follows a trough near 6.9% earlier in the month, when more than nine in ten sampled mills were losing money. Hot metal output has slipped to roughly 2.32 Mt/day — the lowest since April — as mills cut back rather than chase volume. When nine in ten furnaces are losing money, the marginal buyer of PCI is not restocking; it is running down inventory and deferring purchases. That is precisely the behaviour the Mysteel assessments describe.

For readers outside the coal trade, the mechanism bears spelling out. Pulverised coal injection substitutes for coke in the blast furnace at a replacement ratio typically around 0.8–0.9 kg of coke per kg of coal, depending on coal quality and furnace practice. When coke is expensive relative to PCI, mills push injection rates higher; when coke prices ease or steel margins collapse, the incentive to maximise injection weakens. October saw two rounds of coke price cuts land alongside a 6.9% fall in coking coal prices from the start of the month — meaning the economic case for premium, high-cost PCI grades eroded from both directions at once.

The import arbitrage is narrowing but not closing

The seaborne leg deserves particular attention. Russian Low Vol PCI at $183.75/t CFR China, converted at prevailing exchange rates and adding port handling and inland freight, is competitive with domestic port stock — which is why Mysteel notes that imported material retains an "性价比" (cost-effectiveness) advantage even as demand stays thin. The collapse in the import index from $214/t in September and $200/t in early October reflects a market where the marginal tonne is being repriced to clear.

This creates a two-speed market. Domestic pithead prices in the southwest (Qujing, Liupanshui, Panzhihua) are sticky because supply is constrained and long-term contract volumes dominate. Port and import prices, which are spot-exposed and respond faster to mill procurement signals, have taken the bulk of the adjustment. For a steel mill's procurement desk, the practical implication is straightforward: spot port and seaborne tonnes currently offer better value than contract-linked domestic supply, but the window is contingent on continued weakness in mill margins.

What to watch

Three variables will determine whether this soft patch extends into November and December. First, mill profitability — a sustained recovery above 15–20% would restore restocking appetite and put a floor under PCI prices. Second, coking coal and coke pricing — further coke cuts would keep eroding the PCI substitution incentive. Third, the winter heating season, which typically tightens coal logistics and can support domestic prices even as steel demand softens. Mysteel's own framing is instructive: with supply tight but demand softer, the market lacks a clear driver in either direction, and further range-bound weakness is the base case.

The 28 October prints, in other words, are not an isolated data point — they are a readable signal that China's steel mills are managing input costs defensively, and that the PCI complex is repricing accordingly.