Duratec (ASX:DUR) is expected to give "solid" earnings growth over the medium term, helped by increased spending on infrastructure, Euroz Hartley said in a Monday note.

The company adjusted its earnings before interest, taxes, depreciation, and amortization (EBITDA) guidance for the current fiscal year to a range of AU$50 million to AU$53 million from AU$52 million to AU$56 million.

The revenue guidance was lowered to a range of AU$570 million to AU$585 million from AU$600 million to AU$640 million, attributed to delays in expected project awards and weather disruptions.

The research firm noted there are some large projects related to Early Contractor Involvement (ECI) that could add over AU$250 million to the company's order book within the next six months.

Euroz Hartleys has maintained Duratec's buy rating with a reduced price target of AU$1.80 from AU$1.84.