Mini-Cam grew overall revenues by 40% from £7.6m to £10.6m in the 12 months to January 31.
The firm, which is based in Warrington, is celebrating its 25th anniversary. It was founded in 1991 by managing director Nigel Wilson and last year received backing from private equity firm LDC.
Mini-Cam designs, manufactures and distributes hi-tech pipeline inspection systems.
Its crawler and push camera systems are used by water and wastewater companies and their contractors to record and transmit footage during inspections. Other clients include oil and gas, construction and engineering firms.
This year has seen exports increase to account for 48% of overall turnover, up from 41% last year.
The United States market has seen the strongest rise after Mini-Cam signed up a new distributor.
It has ramped up production after acquiring a second site, while staff numbers have increased from 30 to 50 in the past 18 months to meet the growth in demand.
He added: "The past 25 years have flown by, but it’s been an exciting journey.
"Advancing technologies always keep us focused as we look to find new technical solutions to industry problems while maintaining our commitment to provide innovative, high quality and affordable products to our customers around the world.
"Having LDC as a partner has been a key factor in helping us to accelerate our growth this year, particularly in our overseas markets."