Carlyle said 53.2% of Velosi shareholders supported the takeover.
Shareholders of Velosi, which provides quality control services to oil and gas companies, will get 165 pence per share in cash, a 61% premium to Velosi’s close on 8 December.
Applus, which services energy clients in Europe and South America, might restructure Velosi and make it a unit after the deal closes.
Velosi, which operates in 39 countries, has clients such as BP, Exxon Mobil and Shell.
Applus