Latest filed accounts for the Llanelli based business show it turned over £64m in 2019 generating £1m of pre-tax profit and employing 143 staff.
In a statement to BusinessLive the company said: “Despite a significant order book of over £60m to be delivered within the upcoming 12 months, a supportive lender, fantastic staff and prospects, regrettably, owing to a series of events the last week, including an unfavourable adjudication outcome, the business was put under significant financial stress.
“The directors have worked tirelessly with their advisors and funders to look for solutions for the business to remain viable.
“Unfortunately, it has been regrettably determined that no viable options remain, and administration is the best course of action to preserve value for stakeholders and creditors. As a result of this, the directors are in the process of placing the company into administration.”