RPT-COLUMN-Coronavirus is double shock for China's giant aluminium sector: Andy Home

(Repeats column that ran on Friday, with no changes)

* China's imports of bauxite: https://tmsnrt.rs/2SN2ILP

* China's exports of aluminium products: https://tmsnrt.rs/38Pgjb0

By Andy Home

LONDON, Feb 21 (Reuters) - The outbreak of the deadly coronavirus could not have come at a worse time for the aluminium market.

Global aluminium demand fell last year for the first time since the global financial crisis.

Expectations of a demand recovery rested on China, which showed encouraging signs of a manufacturing revival towards the end of 2019.

The virus and the accompanying quarantine measures have since chilled economic activity, representing a short-term demand shock for the world's aluminium market.

It's why the London Metal Exchange (LME) aluminium price sank to a three-year low of $1,685 per tonne at the start of February.

The fear is that China's aluminium smelters will keep churning out metal even as the country's demand implodes.

Since China is the world's largest producer of primary aluminium, accounting for 56% of global output last year, this could have huge ramifications.

At the same time, China's complex production logistics chain is undergoing massive stress and a supply shock is building upstream.

DEMAND SHOCK

Aluminium usage is highly exposed to the construction and transport sectors, meaning a double short-term hit to end-use demand.

Chinese construction activity is being hampered by quarantine restrictions on workers returning from Lunar New Year holidays.

Already weak automotive sales look set to collapse over the coming months. Passenger car sales slumped by 92% in the first half of February, according to the China Passenger Car Association.

The more immediate concern is China's aluminium processing sector, which converts metal into semi-manufactured products. Most fabricators tend to close their plants or at least run at reduced rates over the holidays.

Many are yet to restart, being in locked-down quarantine zones.

This processing chain disruption is causing a sharp build in aluminium stocks registered with the Shanghai Futures Exchange (ShFE).

ShFE inventory has surged by 224,508 tonnes to 409,635 tonnes since the start of January. Increases over the new year holidays are the norm in China but the seasonal January-February build was a mild 75,000 tonnes last year and 88,000 tonnes in 2018.

Arrivals have been concentrated at exchange depots in Jiangsu and Henan provinces, with registered tonnage in Shanghai at a multi-year low of 10,218 tonnes.

That suggests a high level of regional divergence resulting from dislocated physical supply chains.