STRASBOURG, GERMANY—
The European Union is ready to take further action if necessary to counter steel dumping by China, European Commission President Jean-Claude Juncker said Wednesday, as 10,000 jobs hung in the balance in Britain.

"The steel industry has problems," Juncker told a meeting of the European Parliament here, pledging support for an industry whose plight some Britons have blamed on EU policies as they campaign for Britain to quit the bloc in a June referendum.

Juncker, a long-time premier of major steel producer Luxembourg, described the sector as a high-technology industry that needed investment and protection. It employs some 360,000 workers across the European Union.

The European Commission opened three anti-dumping investigations in February into imports of Chinese steel products – seamless pipes, heavy plates and hot-rolled flat steel – and has imposed duties on two other products: cold-rolled flat steel and rebar.

"We are now investigating steel production in China to determine whether it is dumped in the market and we will take other measures if necessary," Juncker told EU lawmakers. He didn’t detail what such measures could be.

Britain battles to save industry

Britain is battling to save its steel industry after India-based Tata Steel Ltd. announced it was putting its British steel operations up for sale, saying this was unavoidable because of a surge in cheap Chinese imports, as well as soaring costs and weak demand.

Juncker, whose father was a steelworker, for 19 years served as prime minister of Luxembourg, home to ArcelorMittal, the world's biggest steelmaker.

EU Official Raises Threats Against Cheap Chinese Steel