BEIJING - Chinese ferrous futures jumped on Monday after the country's top steelmaking province of Hebei issued an anti-pollution alert over the weekend, with the most traded iron ore contract surging nearly 5% and coke rising more than 4%.

The northern Hebei province issued an orange smog alert - the second highest in a four-tier pollution alarm system - in anticipation of a rise in pollution in the coming week, the local environment regulator said, ordering certain mills to cut sintering production.

Benchmark iron ore futures on the Dalian Commodity Exchange, for January delivery, surged as much as 4.8% to 827 yuan ($125.87) before closing up 3.6% at 818 yuan a tonne.

"While this temporary mandate looks to curb sintering and steel production, we understand the extent of these measures is less restrictive compared with those implemented at the same time last year," said Atilla Widnell, managing director of Navigate Commodities.

Portside iron ore inventories rose further, fuelled by rising shipments from miners and robust Chinese consumption. Inventories were up 1.4% to 130.8 million tonnes from the week earlier, as of Nov. 8, according to SteelHome consultancy data.

Steel futures on the Shanghai Futures Exchange also gained, with construction-used steel rebar rising 2.3% to 3,859 yuan a tonne and hot-rolle coils up 1.7% to 3,983 yuan per tonne.

FUNDAMENTALS

* Spot prices of iron ore with 62% iron content for delivery to China stood at $118.5 per tonne on Friday, SteelHome data showed.

* Dalian coking coal edged down 0.9% to 1,288 yuan a tonne.

* Dalian coke ended up 3.8% at 2,479 yuan per tonne, after rising 4.1% in early session.

* Stainless steel futures SHSScv1 climbed 0.9% to 13,980 yuan a tonne.

* China's October iron ore imports dipped 1.7% month-on-month to 106.74 million tonnes, while steel products exports recovered.

($1 = 6.5704 Chinese yuan)

(Reporting by Min Zhang and Shivani Singh; Editing by Subhranshu Sahu and Sherry Jacob-Phillips) ((min.zhang@thomsonreuters.com; (8610) 5669-2105;))