Engineering firm Weir Group has bought America's Seaboard Holdings, in a deal worth £430m.
The deal will boost its presence in the booming shale oil and gas industry in the US.
Texas-based Seaboard's expertise lies in "fracking", or fracturing, of shale formations to develop "unconventional" reserves of oil and gas.
Glasgow-based Weir said the deal would be complementary to its current business.
It said there had been "rapid growth" in demand for Seaboard's products and services.
