A rare sight in hard-luck Youngstown, a new industrial plant, has generated hope that a surge in oil and natural gas drilling across a multistate region might jump-start a revival in Rust Belt manufacturing.

The $650 million V&M Star mill, located along a desolate stretch that once was a showcase for American industry, is to open by year’s end and produce seamless steel pipes for tapping shale formations.

It will mean 350 new jobs in Youngstown, a northeast Ohio city that is struggling with 11 percent unemployment.

V&M Star’s parent company Vallourec, based in Boulogne-Billancourt, France, hopes increased interest in shale formations will produce a ready-made market.